Braz J Otorhinolaryngol.
2011;77(2):191-200.
original article
BJORL
.org
Benign Paroxysmal Positional Vertigo: comparison of two recent
international guidelines
André Luís dos Santos Silva1, Marina Reis Campos Marinho2, Fabiana Maria de Vasconcelos Gouveia3, Julio
Guilherme Silva4, Arthur de Sá Ferreira5, Renato Cal6
Keywords:
practice guidelines as
topic,
rehabilitation,
vertigo.
Abstract
B
enign Paroxysmal Positional Vertigo (BPPV) is characterized by vertigo, lasting for a few seconds
and usually managed by head positioning maneuvers. To educate clinicians concerning the state-ofthe art knowledge about its management, the international societies developed guidelines.
Aim: the aim of this paper is to discuss, in a practical fashion, the current options available to
manage BPPV.
Method: Study design: non-systematic review. This study reviews two recent guidelines regarding
the evaluation and treatment of BPPV. The first one was published by the American Academy of
Otolaryngology Head and Neck surgery (AAO-HNS) and the other by the American Academy of
Neurology (AAN). The similarities were presented in different tables.
Results: Those guidelines presented differences regarding methods. Only the AAO-HNS guidelines
recommend the Dix-Hallpike test for the diagnosis of BPPV. Only canalith repositioning maneuver,
Semont maneuver and vestibular rehabilitation had showed some benefit and were recommended
as good treatment options.
Conclusions: Both guidelines fulfilled all the aspects required for clinicians to diagnosed and manage
BPPV; only the AAO-HNS’s guidelines were more comprehensive and of better quality.
PhD in Physical Therapy. Adjunct Professor of the Graduate Program in Rehabilitation Sciences - UNISUAM - Rio de Janeiro - RJ.
2
Physical Therapist - UFPE. Major interest in Vestibular Rehabilitation.
3
MSc. Professor - Department of Physical Therapy - UFPE.
4
PhD. Adjunct Professor of the Graduate Program in Rehabilitation Sciences - UNISUAM - Rio de Janeiro- RJ.
5
PhD. Adjunct Professor of the Graduate Program in Rehabilitation Sciences - UNISUAM - Rio de Janeiro - RJ.
6
ENT. Otology and Neurotology Fellow - Harvard University - USA. Preceptor at the ENT Medical Residency Program in The Federal University of Pará. Graduate Program in Rehabilitation Sciences - UNISUAM - Rio de Janeiro- RJ.
Send correspondence to: André Luís dos Santos Silva D.Sc Programa de Pós-Graduação - UNISUAM Mestrado Acadêmico em Ciências da Reabilitação - Praça das Nações 34 Bonsucesso Rio de Janeiro 21.041-021.
Tel. (5521) 3882-9962 - E-mail: delandre@infolink.com.br
Paper submitted to the BJORL-SGP (Publishing Management System – Brazilian Journal of Otorhinolaryngology) on April 11, 2010;
and accepted on June 05, 2010. cod. 6997
1
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INTRODUCTION
the present paper is to discuss, in a practical and didactical
way, the current approach available concerning evaluation
and treatment for BPPV.
Vertigo corresponds to the feeling of rotation in
the environment or having the environment rotate around
oneself1. Benign Paroxysmal Positional Vertigo (BPPV),
described in 1921 is very likely the most common cause
of vertigo, with a prevalence of 20%-30% in specialized
clinics2,3. The main symptom is the feeling of rotational
dizziness triggered by a change in head position. It can
happen in an unpredictable and sudden way, but it does
not have a progressive pattern4. Parnes et al.5 reported
that approximately 58% of the BPPV cases do not have
a clearly identified cause. Its primary form corresponds
to 50-70% of the cases. On the other hand, the second
most common cause is head injury (7%-17%), followed
by vestibular neuritis (15%). With an annual incidence of
0.6%, it affects more women than men, and its prevalence
is seven times higher in people older than 60 years, with
an age peak between 70 and 78 years. Consanguineous
relatives have five times more likelihood of developing
BPPV6. In a German epidemiological study, Brevern et
al.7 reported that 86% of the interviewed individuals had
important psychosocial limitations which prevented them
from developing their daily activities, they avoided driving
or leaving their homes during the spells, and most of them
ended up developing depression and anxiety7. In a NorthAmerican epidemiological study, the calculated expenses
to control BPPV reached the sum of two thousand dollars
per patient. Most of these costs were not necessary and
it was associated with misdiagnosis and inefficient treatment8. Another study, in England, calculated that the time
between BPPV’s onset until effective clinical treatment was
of 92 weeks9. The diagnosis of this condition is based on
clinical history, followed or not by vomit, instability and
unbalance. Different maneuvers can be used to confirm
the diagnosis. The Dix-Hallpike maneuver is the most
used for the posterior and anterior canals, and it should
be done by qualified professionals. Diagnostic criteria
include torsional nystagmus and a feeling of vertigo. For
horizontal canal BPPV, we use the roll-test, turning the
patient’s head in its own plane10-15. Today, there are three
basic treatments for BPPV, with their own indications:
canalith repositioning maneuver, freeing exercises and the
Brandt-Daroff habituation exercises. The choice of which
maneuver or exercise is more adequate will depend on the
canal involved and the type of BPPV. Usually, the canalith
repositioning maneuver is used in cases of canalolithiasis
or the freeing maneuver for cupulolithiasis. The habituation exercises are more used with patients with residual
and milder complaints16,17. In an attempt to better organize
the ideas concerning the techniques to be used for the
diagnosis and treatment of BPPV, Fife et al.18 and Bhattacharyya et al.19 created practical guidelines. The goal of
MATERIALS AND METHODS
This study was an asystematic review with a critical
analysis comparing two international guidelines concerning BPPV evaluation, diagnostic and treatment. We chose
two papers which aimed at establishing a world consensus
on the matter, both published in 2008. One was supervised by the American Academy of Neurology (AAN)18
and the other was supervised by the American Academy
of Otolaryngology (AAO-HNS)19, which were published
in different journals in the fields of Neurology and Otorhinolaryngology, respectively. The AAO-HNS formally
established that the clinical practice guidelines were not
conceived as the sole source of guidance in the control of
BPPV. On the contrary, the intent was to provide support
to clinicians as a structure based on evidence for decision
making and to define management strategies. The authors
explained that the paper was not intended for replacing
clinical judgment or to establish a protocol to be followed
for all individuals with such condition, especially because
it could not provide for one single adequate approach to
diagnose and control the problem. The results were presented in comparative tables and the common topics were
compared and discussed in order to check the impact of
the guidelines concerning each type of recommendation
presented by the respective authors and/or academies.
RESULTS
Upon checking both papers, in regards of the methodology used for each study, it was possible to identify
some basic differences. While the paper published by the
AAN18 had only neurologists and neurotologists in their
team of researchers, the second, under the auspices of
the AAO-HNS19, had a multidisciplinary team of investigators, involving not only otolaryngologists, but also
other professional representatives of the following fields:
physical therapy, osteopathy, emergency medicine, Family practice, geriatrics, internal medicine, neurology, head
and neck surgery, audiologists, physiatrists and rehabilitation professionals. The goals were also distinct, one was
broader and with the goal of improving the quality of
diagnosis and treatment (AAO-HNS)19, while the other was
dedicated to answers questions concerning only treatment
(AAN)18(Table 1).
The studies found by Fife et al.18 followed the AAN
evidence system classification, dividing it into Classes I,
II, III and IV, and the recommendations were made according to AAN criteria, in order to translate the quality
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Table 1. Comparison of the goals of both International Guidelines.
Fife et al., Neurology, 200818
American Academy of Neurology (AAN)
Bhattacharyya et al., Otolaryngology - Head and Neck Surgery,
200819
American Academy of Otolaryngology - Head and Neck Surgery Foundation (AAO - HNS)
Answer the following questions:
- Which maneuvers are able to efficiently manage posterior canal
BPPV?
- Which maneuvers are efficient for the anterior and horizontal canal
BPPV?
- Are post-maneuver restrictions necessary?
- Is the simultaneous mastoid vibration important for maneuver efficacy?
- How efficient are the Brandt-Daroff habituation exercises or the
maneuvers self-administered by the patients?
- Are medications efficient to manage BPPV?
- Are the surgical occlusion of the posterior canal or singular neurectomy effective to manage BPPV?
- To improve care quality and the results concerning BPPV by improving diagnosis accuracy and efficiency,
- To reduce the inadequate use of drugs which suppress vestibular
function,
- To reduce the inadequate use of complementary tests such as
x-rays and vestibular tests, and to increase the rational use of repositioning therapeutic maneuvers,
- To engage all professional who can diagnose and treat BPPV patients,
- To enable its use in any setting where BPPV is identified, monitored
or controlled.
b) Clearly defined inclusion/exclusion criteria; c) proper
accounting for drop outs and cross-over studies with sufficiently low numbers to have a minimum potential of a
bias; d) relevant and substantially equivalent base characteristics between treatment groups or, should there be,
proper statistical adjustment for the differences.
In relation to the subjects that each topic portrayed,
AAN proposed some questionings concerning the treatment of BPPV18. On the other hand, the findings from
Bhattacharyya et al. were broken down into thirteen statements based on evidence19 (Table 6).
The authors summarized the recommendations
presented by each paper. We can identify some common
topics between the two files, which will serve as basis for
the discussion. (Table 7).
of this evidence, and they could be classified in levels: A
(efficient), B (probably efficient), C (possibly efficient) or
U (insufficient data)18. Bhattacharyya et al.19 used the Statements’ Policies recommended by the American Academy of
Pediatrics Steering Committee on Quality Improvement and
Management (AAP SCQIM), according to which studies are
divided into classes A, B, C, D, X, resulting in the following
degrees of recommendation: “Strongly Recommended “,
“Recommended”, “Optional” and “Not Recommended”. In
each classification, the level of evidence and degrees of
recommendation varied from the most reliable all the way
to studies with less scientific evidence. (Tables 4 and 5).
In regards of classes I and II studies from the AAN,
besides the mentioned criteria; in order to be classified,
the papers should have: a) a clearly defined primary result;
Table 2. Study Methodology - American Academy of Neurology (AAN)
Fife et al., Neurology, 200818
American Academy of Neurology (AAN)
The following databases were studied: MEDLINE, EMBASE and Current Contents, concerning relevant papers, published entirely and assessed in pairs, between 1966 and June of 2006.
At least two members of the group commented each paper for inclusion. The literature was limited to human beings, randomized and controlled clinical trials, case-controlled and cohort studies, series involving more than six individuals and metanalysis. Summaries, abstracts
and papers, with or without improvement statements were taken off the study.
The papers included in this analysis met the following criteria:
1) BPPV diagnosed by both symptoms of positional vertigo, lasting less than 60 seconds and paroxysmal positional nystagmus in response
to the Dix-Hallpike maneuver or some other provocative adequate maneuver.
2) For all forms of BPPV, nystagmus was characterized by a short latency before nystagmus onset or by a nystagmus reduction with repeated Dix-Hallpike maneuvers (fatigability).
3) For posterior canal BPPV, a positive Dix-Hallpike maneuver was defined by the presence of torsional nystagmus beating upwards, with the
upper pole beating towards the affected ear.
4) For posterior canal BPPV, the Dix-Hallpike maneuver or the roll test produced horizontal positional paroxysmal nystagmus changing directions - geotropic (towards the ground) and apogeotropic (opposite to the ground). Geotropic positional nystagmus is associated with the
paroxysmal nystagmus beating to the right when the supine head is turned to the right and the paroxysmal nystagmus beating to the left
when the supine head is turned to the left, and the opposite happens with the apogeotropic.
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Table 3. Methodology - American Academy of Otolaryngology (AAO-HNS)19
Bhattacharyya et al., 200819
American Academy of Otolaryngology (AAO-HNS)
Many searches were made, from December of 2007 through February of 2008, in MEDLINE, by AAO-HNS employees, with the following
key-words: “BPPV OR Benign Paroxysmal Position Vertigo” or “positional vertigo” or “benign positional vertigo” or “paroxysmal positional
vertigo” or “benign paroxysmal positional vertigo”, in the Title or in the Abstract.
The papers found followed the following selection criteria:
1. Clinical practice guidelines: “guideline” was searched in MEDLINE, as type of publication or title word, with the topic of vertigo, produced
by Medical Association or Organization, and which had an explicit method to obtain evidence and associate them to the recommendations.
2. Systematic review/metanalysis: which contained explicit criteria used to do the bibliographic search and which selected the papers searched by inclusion or exclusion.
3. Randomized and controlled clinical trials: identified in a search in the Cochrane database as controlled trial register, with BPPV in the Title.
4. Original studies: identified limited to a search in MEDLINE for papers with focus on vertigo, published in English, with human subjects and
which were not of the case-report type.
A guided search was made in order to refine the search pattern. The final summary went through an extensive and careful review from the
external observer, and the comments were revised by the head of the group. The recommendations within were based on the best data
published by March of 2008. Should the data not be enough, a combination of clinical experience and a consensus among specialists was
used.
Table 4. Comparison of the levels of evidence and degrees of recommendation of the studies selected in the Guidelines:
Fife et al., Neurology, 200818
American Academy of Neurology (AAN)
Bhattacharyya et al., 200819
Otolaryngology - Head and Neck Surgery (AAO-HNS)
Class I: Clinical-randomized, prospective, blind trial, in a representative population.
Class A: Well-outlined, randomized controlled studies or studies of
diagnosis done in a population similar to the target population of the
paper.
Class II: Cohort, prospective study in a representative population,
blinded in the assessment of the results OR a randomized, controlled
clinical trial in a representative population.
Class III: All other controlled trials (including well-defined controls
on the natural history or ill-patients serving as their own controls) in
a representative population, in which the results are independently
assessed, or in an independently determined fashion by a measure
of objective results.
Class IV: Evidence from uncontrolled studies, case series, case reports or expert’s opinion.
Class B: Randomized, controlled studies or studies of diagnosis with
minor limitations; hugely consistent evidences from observational
studies.
Class C: Observational studies (case-controlled, cohort).
Class D: Expert’s opinion, case reports, reasoning from experimental
studies (research bank or animal studies).
Class X: Special situations for which validated studies could not have
been carried out should there be a clear preponderance of the benefits over the risks.
DISCUSSION
may include the search for vertigo and positional nystagmus, spontaneous and semi-spontaneous nystagmus,
saccadic eye movements, pendular tracking, head selfrotation, caloric test, and others. Positioning nystagmus
can be identified with the use of Frenzel goggles or VNG
(videonystagmography), enabling the recognition of the
canal involved and ruling out the ocular fixation inhibition
effect on the vertical and horizontal nystagmus20,21.
In executing the Dix-Hallpike maneuver, the patient
is initially seating down, with the head turned laterally in
approximately 45°, right or left, according to the side to
be tested. With the examiner hold the patient’s head, the
patient is instructed to lay down in dorsal decubitus. The
head remains pending, at an approximately 30°extension.
The patient remains immobilized in this position, with
BPPV diagnosis
The diagnosis of this condition must be based on
clinical history and physical exam and, usually, there are
no auditory complaints20. The typical story is characterized
by vertigo spells upon changes in head position, as the
person rolls over to one of the sides in bed, as the person
gets up, looks up, bends down, and it may be accompanied
or not by nausea or vomit. We may also find instability
and unbalance. Symptoms tend to resolve spontaneously
within some weeks or months, there may or may not be
recurrences. The vestibular system involvement must be
checked by means of a neurotology assessment, which
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Table 5. Comparing the recommendations from both academies.
Fife et al., Neurology, 200818
American Academy of Neurology (AAN)
Bhattacharyya et al., 200819
Otolaryngology - Head and Neck Surgery (AAO-HNS).
Level A: Established as efficient, inefficient or harmful for a given
condition on the specified population. (requiring at least two consistent class I studies.)
“Strong recommendation”: the benefits were clearly higher than the
risks and the quality of support evidence was excellent (class A or
B). In some clearly identified circumstances, it could be based in less
evidence when possible to obtain high quality proof and the benefits
would clearly outweigh the risks.
Level B: Probably efficient, inefficient or harmful for the condition in
the specified population. (Level B required at least one Class I study
or at least two consistent Class II studies).
Level C: Possibly efficient, inefficient, or harmful for the condition in
the specified population. (Class C classification level required at least
one Class II study or at least to Class III consistent studies.)
Level U: Inadequate or conflicting data with the current knowledge,
treatment would not be approved.
∙ The recommendations could have been positive or negative.
“Recommendation”: the benefits were greater than the risks, but the
quality of the evidence was not so strong (class B or C). Could have
been made under the same previous conditions (A or B).
“Option”: the quality of the existing evidence was suspicious (class
D) or well conducted studies (class A, B or C) showed small advantages of one method over the other.
“Without recommendations”: there was a lack of pertaining evidence
(class D), as a not very clear balance of the risks and benefits.
Table 6. Issues approached by the respective authors of the international guidelines.
Fife et al., Neurology, 200818
American Academy of Neurology (AAN)
Bhattacharyya et al., 200819
Otolaryngology - Head and Neck Surgery (AAO-HNS).
1. Which maneuvers effectively treat BPPV?
2. Which maneuvers were efficient to manage anterior and horizontal
canal BPPV?
3. Were post-maneuver restrictions necessary?
4. Was the simultaneous mastoid vibration important for the efficacy
of the maneuvers?
5. Which is the efficacy of the Brandt-Daroff habituation exercises or
of the patients’ self-administered maneuvers?
6. Were the medication efficient to treat BPPV?
7. Was surgical occlusion of the posterior canal or singular neurectomy effective to treat BPPV?
1a. Posterior canal BPPV;
1b. Lateral canal BPPV diagnosis;
2a. BPPV differential diagnosis;
2b. Modifying factors;
3a. Radiograph and vestibular tests;
3b. Audiometric tests;
4a. Repositioning maneuver as initial treatment;
4b. Vestibular rehabilitation as initial therapy;
4c. Observation as initial therapy;
5. Drug therapy;
6a. Treatment response reassessment;
6b. Treatment failure assessment;
7. Education.
Table 7. Comparing the results found in the guidelines.
Fife et al., Neurology, 200818 (AAN)
Bhattacharyya et al., 200819 (AAO-HNS)
Canalith repositioning maneuver
Level A
Recommendation
Semont maneuver
Level C
No recommendations
Horizontal canal BPPV treatment
Level U
No recommendations
Self-treatment
Level U
No recommendations
Restrictions on post-maneuver activities
Medication use
Level U
Level U
No recommendations
Recommendation against
Vestibular rehabilitation
Level C
Option
the eyes open and the diagnostic criterion includes the
occurrence of a characteristic mixed-torsional and vertical
nystagmus with the upper eye pole beating towards the
dependent ear and upwards, when the posterior semicircular canal is affected. The nystagmus has a 1 to 5 second
latency time in cases of canalolithiasis, and between 10
and 20 seconds, in cases of cupulolithiasis. As the patient
returns to the seating position, the nystagmus may occur
in the opposite direction, with or without vertigo, making
up a torsional-type of nystagmus beating downwards. In
the modified Dix test, the patient seats on the bed, with his
legs hanging out, the head is turned in 45° to one of the
sides and lies down on the opposite side. The same Dix
Hallpike responses are expected should the patient have
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BPPV, both for the anterior as well as for the posterior
canal. The patient then returns to the seating position, to
check whether there is nystagmus in this position, and
then the test is repeated on the opposite side22.
The roll test is used for the horizontal canal BPPV,
in which the patient lies down in dorsal decubitus, with
the head flexed anteriorly in 30°. The patient then turns
his head to one side and keeps it in this position for up
to one minute. A horizontal nystagmus, of lower latency
and less prone to fatigue - because the otoconia move
inside the canal - is expected. In horizontal canalolithiasis,
nystagmus is geotropic or it beats towards the lower portion of the ear, with the fast phase towards the center of
the earth, it is fatigable and lasts for less than 60 seconds.
While in cupulolithiasis, it is apogeotropic, or towards the
upper ear and persistent. In canalolithiasis, the direction of
the greatest intensity of this nystagmus usually identifies
the affected side.
Some patients who do not have the characteristic
nystagmus in the Dix Hallpike maneuver, but experience
the classic vertigo during the test will be classified as
subjective BPPV and treatable by the maneuver23. Bhattacharyya et al.19 commented that some factors, such as the
speed of the movement, the time of the day and the angle
of the occipital plane during the maneuver can influence
this test, and they also found differences in efficacy because of differences concerning the maneuvers employed
by specialists and non-specialists. After checking class B
studies, with a few limitations, they concluded that the
diagnostic Dix-Hallpike maneuver is classified as “strongly
recommended”, and it must be used by the clinicians, unless there is some clear and compelling logic behind an
alternative approach.
rates of 85% to 95% of symptom remission, did not use the
control group and discussed the possibility of spontaneous
recovery remission.
Bhattacharyya et al.19 stated that the posterior canal
BPPV must be treated with the Canalith Repositioning Maneuver, based on randomized clinical trials (Class B studies), and small samples, where there was a predominance
of benefits over the risks, which classified it as “recommended”. This means that health care professionals must
be attentive to new information and must be sensitive to
the patient’s preference. In their search, the authors found a
systematic review, based on three randomized, controlled,
high-quality clinical trials, and noticed significant effects
favoring Canalith Repositioning (CR) when compared to
the control groups (odds ratio of 4.2% favoring CR for the
subjective resolution of symptoms and a 5.1% odds ratio
favoring treatment to convert a positive Dix-Hallpike test
into negative). Positive results for CR treatment were also
shown in seven non-randomized clinical trials (of lower
quality) and case series. At last, four metanalysis concluded
that CR is significantly more effective than placebo19. Based
on two class I studies, three class II, four metanalysis and
one systematic review, Fife et al.18 classified the maneuver
as “Level A Recommendation”, in other words, treatment is
effective and safe, and it should be offered to the patients
of all ages with posterior canal BPPV.
Korn et al.25 and Dorigueto et al.26 studied the number of maneuvers which must be used to treat BPPV and
concluded that repeated maneuvers in the same session
seem to be more efficient, and even more necessary when
one is dealing with cupulolithiasis. It was only in one of
the studies19 hereby analyzed, that it was not possible to
identify a specific number or a protocol for such, and the
CR repetition must be determined by symptom severity,
if persistent, by the professional’s evaluation and its successful treatment with the maneuver.
Canal Repositioning Maneuver
In 1992, Epley described the Canalith Repositioning
Maneuver (CRM), and this technique used cranial vibration besides a pre-maneuver medication and made the
patient’s head go through five different positions which
enabled the calcium carbonate crystals to move, under the
influence of gravity, from the posterior canal to the utricle.
Today, most neurotologists and physical therapists use
a modified version of this procedure. In this maneuver,
the patient leaves the seating down position, moved to a
Dix-Hallpike position with the head pending to the side
of the affected ear, where it is kept for 30 to 60 seconds.
The head is then turned 90° to the opposite Dix-Hallpike
position, keeping neck extension. Following that, the patient continues the movement 90° further, until the head
is diagonally opposite to the first Dix-Hallpike position,
where it is kept for 30 - 60 seconds more. After this position, the patient is sat23. Herdman & Tusa24 reported a
certain controversy concerning the treatment of canalith
repositioning, since the studies evaluated, despite boasting
Semont’s Maneuver
In order to treat posterior canal cupulolithiasis, in
1988 Semont described the freeing maneuver, in which the
patient starts seating down, with the head in rotation to
the healthy side, until he is laid down towards the affected
side with the head turned upwards. After 1 to 2 minutes,
the patient is quickly moved, going through the seated
position, to lie down on the opposite side, with the head
now pointing downwards, where the patient remains for
1 to 2 minutes. Afterwards, the patient returns slowly with
the head still tilted and fixed until the seated position. It
is believed that sudden changes in head position may
release the crystals which were adhered to the cupula27.
Maia et al.28 stated that some authors consider the Semont
maneuver too aggressive, because it often times triggers
severe dizziness and it is not well tolerate by the patients.
Contrary to that, Reis29 stated that this can be the only
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solution for the most difficult cases. Both international
guidelines hereby discussed concluded that there is no
significant evidence to establish Semont’s maneuver efficacy in relation to Canalith Repositioning, based on the
analysis of the three studies. One Class II study showed
that there is a significant improvement (p < 0.009) in
vertigo intensity for those patients treated in comparison
to placebo treatment; the other, class III, we noticed a
greater improvement in the use of medication; and, at last,
as we compare the Semont’s maneuver with the Canalith
Repositioning Maneuver and the Brandt-Daroff habituation
exercises, in a class III study, the two maneuvers had an
effect which was very much similar in the short run (71%,
74% and 24%, respectively); however, CR stood out in the
long run (77%, 93% and 62%, respectively)18,19. Fife et al.18
then stated that the Semont maneuver can be “possibly
effective”, a concept based on a single Class II study, resulting in a “Level C Recommendation “. Bhattacharyya et
al.19 ratified that it is less effective than no treatment or that
the Brandt-Daroff exercises in the control of symptoms.
by Fife et al.18 and considered effective; however, there
are only data from Class IV studies (four involving the first
one and three limited papers supporting the latter). The
prolonged forced position, presented by approximately the
same number of papers, was also reported as effective in
both guidelines18,19. The same maneuvers, as assessed by
Bhattacharyya et al., based on three non-controlled studies, were also reported as effective. The authors concluded
that there was not sufficient evidence to recommend it as
a preferable treatment for horizontal canal BPPV19.
BPPV self-treatment
According to Bhattacharyya et al.19, no comparative
and carefully conducted study was published in order to
make recommendations concerning self-treatment versus
a treatment given by a professional. They believe that, in
motivated individuals, BPPV self-treatment may be an option. Fife et al.18 classified it as a Level U Recommendation”,
because, there was no sufficient evidence to recommend
or refuse self-treatment using the Semont or Canalith Repositioning maneuvers. We found three papers. One of
them reported a mild improvement in those patients who
were instructed to self-administer CR at home after starting it in the medical office (88% compared to 69%, when
done only at the office). The remaining two compared the
self-administered Canalith Repositioning Maneuver with
the Brandt-Daroff exercises and with the self-administered
Semont Maneuver. The results were 64% and 95%, respectively, of improvement with the repositioning, compared
to 23% with the Brandt-Daroff exercises and 58% after
self-administration of the Semont maneauver18,19.
Horizontal canal BPPV treatment
When approaching horizontal canal BPPV, canalith
repositioning and the modified repositioning maneuver are
usually inefficient; therefore, some alternative maneuvers
have been proposed18. Based on 10 and in 2 papers, Fife
et al.18 and Bhattacharyya et al.19, respectively, stated that
the roll maneuver (Lempert or Barbecue) and its variations
are the most commonly employed approaches. A variation
would be to modify the original Epley Maneuver, moving
the head in a horizontal canal plane, proposed by Herdman and Tusa24. The patient in dorsal decubitus with the
involved ear pointing downwards, would move his head
slowly until reaching the position with the face turned
upwards, keeping it like this until the vertigo recedes.
The patient continues with the 90° movement to the opposite side to the lesion until completing a 360 degree
turn, waiting in each position until the dizziness is gone.
The simplest approach is the “prolonged position maneuver”, developed by Vannucchi et al., which is based on
the patient’s remaining on healthy lateral decubitus for 8
consecutive hours. Libonati mentioned other maneuvers,
such as the Vannucchi-Asprella and the Lempert (barbecue) maneuver for canalolithiasis (geotropic nystagmus)
and the Gufoni maneuver, in the most severe cases of the
cupulolithiasis form (apogeotropic nystagmus)27. Fife et
al.18 found two class IV studies, with different parameters,
not very clear and without a control group to compare it
with the rate of natural recovery over this condition. The
authors reported that the Lempert’s maneuver efficacy is
about 75%, varying between 50% and almost 100%. The
same result can be seen in the paper published by Bhattacharyya et al.19, based on fifteen Class C papers. The Gufoni’s and Vannucchi Asprella’s maneuvers were checked
Post-maneuver activity restrictions
Some controversies in the literature are found when
one is dealing with the efficacy of imposing restriction
of some activities to the patients after the canalith repositioning maneauver28-31. Once again, both authors of the
guidelines did not find evidence to corroborate this efficacy18,19. Upon examining 6 class IV studies, Fife et al.18
classified the restrictions as “Level U Recommendation”,
since five of the six studies did not show any additional
benefit of the post-maneuver restrictions, and only one
showed minimum benefit in patients with such restrictions,
as measured by the number of maneuvers necessary to
produce a negative Dix-Hallpike test.
Medication
Ganança et al.32 advocated that the use of a combined treatment modality can lead to quicker and more
long lasting symptom improvement or resolution than
monotheratpy, establishing that betahistine, cinnarizine,
clonazepam, flunarizine or Gingko Biloba extract ameliorate vestibular vertigo. On the other hand, Konnur33
believes that through medication one can get to a satis-
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factory symptom improvement during acute crises, but
they can be potentially counter-producing as to central
vestibular compensation, especially if used for longer
periods of time. Medication usually employed to manage
acute symptoms are: anti-dizziness agents, anti-histaminic
or vasodilators; and these may cause sedation and central
nervous function depression. As symptoms subside, the
drugs must be discontinued and the patient should start
with vestibular rehabilitation. According to the hereby
compared guidelines, the recommendations were: “recommendation against”, or “level U recommendation”. Fife et
al.18 concluded that no evidence was found to support the
recommendation of any medication in the routine treatment of BPPV. They got to this conclusion after assessing
two class III studies. The first experiment did not find
any difference between lorazepam (1mg, TID), diazepam
(5mg, TID) and placebo, after four weeks of treatment. In
the second one, flunarizine proved to be more effective
than not treatment at all and less effective than the Semont
Maneuver in eliminating the symptoms18.
Bhattacharyya et al.19 treated the matter more in
depth, analyzing a larger number of papers and they also
did not find evidence to suggest that some vestibular suppressive agent could be effective as a primary and definitive treatment for BPPV, or a substitute for repositioning
maneauvers19. Some studies showed BPPV resolution in
the long run with the use of medication, but these did
not follow the patients up for a period of time in which
spontaneous remission could occur. A small study compared CR with medication monotheratpy and concluded
that canalith repositioning yielded substantially better responses (78.6% to 93.3%, respectively) when compared to
the use of medication alone (30.8% of improvement), after
two weeks of follow up. The lack of vestibular suppression
benefits and its inferiority to CR indicate that clinicians
should not avoid the maneuver and prefer medication to
treat BPPV, having seen that some drugs may yield side
effects which interfere in vestibular compensation, they
mask findings from the Dix-Hallpike maneuver, they interfere in the cognitive function, gastrointestinal mobility,
they impair urinary function and cause movement and
vision disorders19. Thus, international guidelines point out
that the vestibular function suppression agents are not
recommended for the treatment of BPPV, except for the
short term management of neurovegetative symptoms such
as nausea and vomit in a severely symptomatic patient,
and for patients who became severely symptomatic after
a CR. These conclusions made by Bhattacharyya et al.19,
were obtained from a class C, observational and crosssectional study.
tibular rehabilitation - with the goal of treating vestibular
disorders. The program was based on a series of eye,
head and body movements, usually in the positions in
which the rotational dizziness was triggered and which
should be done according to the patient’s tolerance and his
individual needs. Considered as a therapeutic approach,
vestibular exercises try to bring about an improvement in
global balance, quality of life, restoring special orientation
to as close as possible to physiological conditions. This
recovery happens by means of vestibular compensation.
Besides these mechanisms, there may also be adaptation,
habituation and substitution33. As far as adaptation is concerned, the vestibular system can learn again to receive and
process information, even when distorted or incomplete,
adapting itself to the stimuli presented in order to recover
from the altered reflex. Habitation tackles the symptoms,
being based on the reduction of sensorial responses based
on the repetition of sensorial stimuli, made possible by the
repetition of movements, causing a reduction in vestibular
response and reduction in nystagmus amplitude. For that,
it is necessary to integrate all involved sensorial inputs:
visual, vestibular and somatosensory. In the vestibular
substitution process there is an exchange of information
associated with body balance which are absent or conflicting. Later modified by Brandt and Daroff, habituation
exercises require that the patient move in the triggering
position, repeatedly and many times during the day. The
Brandt-Daroff exercises are usually indicated in cases of
less intense BPPV, as a coadjuvant to the Epley and Semont
maneauvers34. During its execution, the patient is seating
down and turning his head in up to 45° towards the side
which does not cause vertigo, and lies down towards the
side that causes the symptoms, remaining in this position for 30 seconds, or until vertigo ends; after this time,
the patient should seat again, for 30 seconds. Following
that, the patient lies down again to the opposite side and
remains there for 30 seconds more, until returning to the
seated position. The exercise duration and frequency
depend on neurotological findings and patient evolution,
and it should be customized for each case and repetition
many times per day is indicated until positioning vertigo
subsides for at least two consecutive days34-36. Fife et al.18
evaluated only two studies without getting to any specific
conclusion concerning the use of vestibular rehabilitation
exercises18, while Bhattacharyya et al.19 described many
papers and, based on class C, observational, limited,
controlled and randomized trials, listed such exercises as
optional for the treatment of BPPV. They then concluded
that, regarding posterior canal BPPV, that vestibular rehabilitation yielded better results for BPPV treatment when
compared to placebo. In the short term assessment, the
exercises proved to be less efficient in producing complete
symptom resolution when compared to CRM. Nonetheless,
with long term follow up, its efficacy comes close to that
Vestibular rehabilitation
During the 40’s, physician Cooksey and the physical
therapist Cawthorne, proposed the use of exercises - ves-
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198
of the repositioning maneuver. Thus, vestibular rehabilitation is considered possibly better indicated as an adjuvant
treatment instead of being a primary treatment modality.
4. Pereira AB, Scaff M. Vertigem de Posicionamento Paroxística Benigna.
Arq Neuropsiquiatr.2001;59(2B):466-70.
5. Parnes L, Agrawal SK, Atlas J. Diagnosis and management of benign
paroxysmal positional vertigo (BPPV). CMAJ.2003;169(07):681-93.
6. Burlamaqui JC, Campos CAH, Mesquita Neto O. Manobra de Epley
para Vertigem Postural Paroxística Benigna: Revisão Sistemática. Acta
ORL.2006;24(1):15-22.
7. von Brevern M, Radtke A, Lezius F, Feldmann M, Zeise T, Lempert
T, et al.. Epidemiology of benign paroxysmal positional vertigo: a
population based study. J Neurol Neurosurg Psychiatry.2007;78:710-5.
8. Li JC, Li CJ, Epley J. Cost-effective management of benign positional vertigo using canalith repositioning. Otolaryngol Head Neck
Surg.2000;122:334-9.
9. Fife D, Fitzgerald JE. Do patients with benign paroxysmal positional
vertigo receive prompt treatment? Analysis of waiting times and
human and financial costs associated with current practice. Int J
Audiol.2005;44:50-7.
10. Ganança MM, Caovilla HH, Munhoz MSL, Silva MLG, Ganança FF,
Ganança CF. Vertigem posicional paroxística benigna. Rev Bras Med
Otorrinolaringol.2000;07(3):66-71.
11. Munaro G, Silveira AF. Avaliação vestibular na vertigem posicional
paroxística benigna típica e atípica. Rev CEFAC.2009;11(1):76-84.
12. Silva ALS, Moreira JS. Vertigem: A abordagem da Fisioterapia. Fis
Bras.2000;01(1):91-7.
13. Furman JM, Cass SP. Benign Paroxysmal Positional Vertigo.N Engl J
Med.1999;341(21):1590-6.
14. Schuknecht HF. Cupulolithiasis. Arch of Otol.1969;90:765-78.
15. Teixeira LJ, Machado JNP. Manobras para o tratamento da vertigem
posicional paroxística benigna: revisão sistemática da literatura. Braz
J Otorhinolaryngol.2006;72(1):130-9.
16. Soares EV. Reabilitação vestibular em idosos com desequilíbrio para
marcha. Perspectivas Online.2007;1(3):88-100.
17. Tavares SF, Santos MFC, Knobel KAB. Reabilitação vestibular em um
hospital universitário. Braz J Otorhinolaryngol.2008;74(2):241-7.
18. Fife TD, Iverson DJ, Lempert T, Furman, JM, Baloh, RW, Tusa RJ, et
al.. Practice parameter: therapies for benign paroxysmal positional
vertigo (an evidence-based review): report of the Quality Standards
Subcommittee of the American Academy of Neurology. Neurology.2008;70(22):2067-74.
19. Bhattacharyya N, Baugh RF, Orvidas L, Barrs D, Bronston LJ, Cass
S, et al.. Clinical Practice Guideline: Benign Paroxysmal Positional
Vertigo. Otolaryngol Head Neck Surg.2008;139:S47-S81.
20. Cohen HS, Kimball KT. Effectiveness of treatments for benign
paroxysmal positional vertigo of the posterior canal. Otol Neurotol.2005;26:1034-40.
21. Soto VA, Bartual MJ, Santos PS. Benign paroxysmal vertigo: a
comparative prospective study of the efficacy of Brandt and Daroff exercises, Semont and Epley maneuver. Laryngol Otol Rhinol
(Bord).2001;122:179-83.
22. Sargent EW, Bankaitis AE, Hollenbeak CS, Currens JW. Mastoid oscillation in canalith repositioning for paroxysmal positional vertigo.
Otol Neurotol.2001;22:205-9
23. Salvinelli F, Casale M, Trivelli M, D´Ascanioo L, Firrisi L, Lamanna F, et
al.. Benign paroxysmal positional vertigo: a comparative prospective
study on the efficacy of Semonts maneuver and no treatment strategy.
Clin Ter.2003;11:154-7.
24. Herdman SJ, Tusa RJ. Evaluation and Management of the patients
with BPPV. In: Herdman SJ. Vestibular Rehabilitation. 2007. F.A.Davis,
3rd ed. 493p.
25. Korn GP, Dorigueto RS, Ganança MM, Caovilla HH. Manobra de
Epley repetida numa mesma sessão na vertigem posicional paroxística
benigna. Braz J Otorhinolaryngol.2007;73(4):533-9.
26. Dorigueto RS, Ganança MM, Ganança FF. Quantas manobras são
necessárias para abolir o nistagmo na vertigem posicional paroxística
benigna? Braz J Otorhinolaryngol.2005;71(6):769-75.
27. Libonati GA. Diagnostic and treatment strategy of Lateral Semicircular
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CONCLUSION
After considering the treatment proposals for each
guidelines we may conclude that the Dix-Hallpike maneuver was considered a gold standard for the diagnosis of
BPPV. As far as treatment is concerned, we noticed that the
only one with sufficient recommendation was the canalith
repositioning maneuver, which is the best option to treat
vertical canalolithiasis and the one with the most high
quality publications advocating it. The Semont maneuver
is possibly efficient, but there is still the need to develop
better studies concerning this technique. Regarding selfadministered treatment and post-maneuver activity restrictions, there were no sufficient studies to support its recommendation. As to the intervention with multiple maneuvers,
it was not possible to find a specific number or protocol
which could justify its efficacy. CRM repetition must be
determined by symptom severity, should they persist, by
the expert’s assessment and the past success the expert
had with the procedure. Medication is contra-indicated, but
there are not enough papers supporting such statement.
Vestibular rehabilitation is considered possibly efficient,
thus being a secondary option to treat BPPV. Of the studies hereby discussed, the work led by Bhattacharyya et.
al and under the auspices of the American Academy of
Otorhinolaryngology seems to be the most comprehensive
and in-depth concerning BPPV. Besides having a more
complete team of researchers and clinicians, they had the
largest number of publications, which provided them with
greater scientific basis to recommend each technique. We
also found in them, not only a detailed analysis of the data
obtained, but also a care with the introduction of each
topic discussed. The study carried out by Fife et al.18 was
considered more limited, since it was restricted to respond
only those questions made and they had a limited team.
The small number of references may be associated with
the study limitation. Despite this difference in its creation
and in some guidelines’ content hereby discussed, both
are qualified studies, highly recommended for health-care
professionals who wish to add more to their knowledge
about BPPV diagnosis and control.
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