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Publication Date: Feb 1, 2009
Publication Name: International Journal of Cardiology
Research Interests: Cardiology, Death, Electronics, High Voltage, Humans, and 14 moreAnimals, Firearms, Left Ventricular Dysfunction, Association, Acute Coronary Syndrome, Cardiac Arrhythmias, Clinical Study, Sympathetic Nervous System, Cardiomyopathies, Young Men, Catecholamines, Time Course, Takotsubo cardiomyopathy, and Acute stress
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Publication Name: The Journal of heart valve disease
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ABSTRACT
Publication Name: Journal of Investigative Medicine
Research Interests:
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Papillary muscle dyssynchrony as a cause of functional mitral regurgitation in non-ischemic dilated cardiomyopathy patients with narrow QRS complexesmore
by Mohammad Otahbachi and Cihan Çevik
Mitral regurgitation (MR) increases mortality in dilated cardiomyopathy (DCM). We investigated the prevalence of functional MR in non-ischemic DCM patients with narrow QRS intervals and its association with papillary muscle dyssynchrony.... more
Mitral regurgitation (MR) increases mortality in dilated cardiomyopathy (DCM). We investigated the prevalence of functional MR in non-ischemic DCM patients with narrow QRS intervals and its association with papillary muscle dyssynchrony. Ninety-three patients were enrolled consecutively in this cross-sectional study. Patients were evaluated for the presence of intraventricular (DYS Sep-Lat Sys) and papillary muscle (DYS Inter PAP Sys) systolic dyssynchrony using tissue Doppler echocardiographic imaging (TDI). Two-dimensional and Doppler echocardiography were used for quantification of MR. Statistical analyses were performed using unpaired t test, Mann-Whitney U test, correlation and logistic regression analyses. Thirty-seven patients (39%) had significant DYS Sep-Lat Sys and 25 patients (26%) had DYS Inter PAP Sys. Patients with DYS Inter PAP Sys had lower basal septum systolic (p=0.007) and late diastolic velocities (p=0.049), greater MR volume (p=0.01), effective regurgitant orifi...
Publication Name: Anadolu kardiyoloji dergisi: AKD = the Anatolian journal of cardiology
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A Giant Abdominal Aortic Aneurysm and a Massive Eye Hemorrhage Due to Advanced Atherosclerosis in an Eighty-Four Year Old Man~!2009-10-07~!2009-12-14~!2010-03-05~!more
by Mohammad Otahbachi and Cihan Çevik
Publication Date: 2010
Publication Name: The Open Cardiovascular Imaging Journal
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by Mohammad Otahbachi and Cihan Çevik
Publication Date: 2009
Publication Name: Anadolu kardiyoloji dergisi : AKD = the Anatolian journal of cardiology
Research Interests:
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Mitral regurgitation (MR) increases mortality in dilated cardiomyopathy (DCM). We investigated the prevalence of functional MR in non-ischemic DCM patients with narrow QRS intervals and its association with papillary muscle dyssynchrony.... more
Mitral regurgitation (MR) increases mortality in dilated cardiomyopathy (DCM). We investigated the prevalence of functional MR in non-ischemic DCM patients with narrow QRS intervals and its association with papillary muscle dyssynchrony. Ninety-three patients were enrolled consecutively in this cross-sectional study. Patients were evaluated for the presence of intraventricular (DYS Sep-Lat Sys) and papillary muscle (DYS Inter PAP Sys) systolic dyssynchrony using tissue Doppler echocardiographic imaging (TDI). Two-dimensional and Doppler echocardiography were used for quantification of MR. Statistical analyses were performed using unpaired t test, Mann-Whitney U test, correlation and logistic regression analyses. Thirty-seven patients (39%) had significant DYS Sep-Lat Sys and 25 patients (26%) had DYS Inter PAP Sys. Patients with DYS Inter PAP Sys had lower basal septum systolic (p=0.007) and late diastolic velocities (p=0.049), greater MR volume (p=0.01), effective regurgitant orifi...
Publication Date: 2009
Publication Name: Anadolu kardiyoloji dergisi : AKD = the Anatolian journal of cardiology
Research Interests:
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by Mohammad Otahbachi and Cihan Çevik
Aortic coarctation is a congenital malformation of the aorta that should be diagnosed and corrected early in life. The natural history of unrepaired coarctation of the aorta includes the development of systemic hypertension and subsequent... more
Aortic coarctation is a congenital malformation of the aorta that should be diagnosed and corrected early in life. The natural history of unrepaired coarctation of the aorta includes the development of systemic hypertension and subsequent morbidity and death from cardiovascular disease. Here, we present a case with replacement of the aortic arch and its branches by tortuous multilobulated aneurysms as a result of untreated aortic coarctation.
Publication Date: 2009
Publication Name: Journal of cardiovascular medicine (Hagerstown, Md.)
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Mitral regurgitation reduces systemic coagulation activity in rheumatic heart disease: using fibrin D-dimer as a biomarker of thrombogenesismore
by Mohammad Otahbachi and Cihan Çevik
Publication Date: 2009
Publication Name: The Journal of heart valve disease
Research Interests:
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Rosuvastatin therapy does not affect serum MMP-13 or TIMP-1 levels in hypercholesterolemic patientsmore
by Mohammad Otahbachi and Cihan Çevik
Matrix metalloproteinases degrade the collagen content of atherosclerotic plaque and reduce plaque stability. In tissue sections of atherosclerotic plaque, the expression of matrix metalloproteinases is increased.... more
Matrix metalloproteinases degrade the collagen content of atherosclerotic plaque and reduce plaque stability. In tissue sections of atherosclerotic plaque, the expression of matrix metalloproteinases is increased. 3-Hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) decrease the tissue expression of matrix metalloproteinases-1, -2, -3, and -9 in atheromatous plaque by attenuating the inflammatory process that leads to increased expression. However, it is not known whether statins decrease levels of matrix metalloproteinase-13--an enzyme crucial to the initiation of collagen degradation-as part of their plaque-stabilizing effect.We prospectively examined the effect of statin therapy on serum levels of matrix metalloproteinase-13, tissue inhibitor of metalloproteinase-1, and low-density-lipoprotein cholesterol in 14 patients with hypercholesterolemia. All were at low risk for adverse cardiovascular events and were given 20 mg/d of rosuvastatin for 4 weeks. Post-therapy...
Publication Date: 2011
Publication Name: Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital
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Effect of 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibition on serum matrix metalloproteinase-13 and tissue inhibitor matrix metalloproteinase-1 levels as a sign of plaque stabilizationmore
by Mohammad Otahbachi and Cihan Çevik
Atherosclerotic plaques are composed of a lipid rich core, which is covered by a collagen rich fibrous cap. Rupture of the atherosclerotic plaque with superimposed thrombosis is the main cause of acute coronary syndromes, including acute... more
Atherosclerotic plaques are composed of a lipid rich core, which is covered by a collagen rich fibrous cap. Rupture of the atherosclerotic plaque with superimposed thrombosis is the main cause of acute coronary syndromes, including acute myocardial infarction and unstable angina. The stability of the plaque depends on its collagen content; degradation of the collagen leads to a vulnerable plaque that is prone to rupture. Recent studies have demonstrated a critical role for matrix metalloproteinases (MMPs) in the degradation of the collagen content and the reduction of mechanical stability of the atherosclerotic plaques. Increased expression of various MMPs has been shown in the tissue sections of atherosclerotic plaques. The increased expression of MMPs in the atheroma also leads to increased MMP levels in the circulation. The cholesterol lowering drugs - 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) - decrease the tissue expression of various MMPs in atheroma...
Publication Date: 2008
Publication Name: Journal of cardiovascular medicine (Hagerstown, Md.)
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Papillary muscle dyssynchrony as a cause of functional mitral regurgitation in non-ischemic dilated cardiomyopathy patients with narrow QRS complexes Dar QRS'li non-iskemik dilate kardiyomiyopatili hastalarda fonksiyonel mitral yetersizliğinin nedeni olarak papiller kas dissenkronisimore
by Mohammad Otahbachi and Cihan Çevik
ABS TRACT Objective: Mitral regurgitation (MR) increases mortality in dilated cardiomyopathy (DCM). We investigated the prevalence of functional MR in non- ischemic DCM patients with narrow QRS intervals and its association with papillary... more
ABS TRACT Objective: Mitral regurgitation (MR) increases mortality in dilated cardiomyopathy (DCM). We investigated the prevalence of functional MR in non- ischemic DCM patients with narrow QRS intervals and its association with papillary muscle dyssynchrony. Methods: Ninety-three patients were enrolled consecutively in this cross-sectional study. Patients were evaluated for the presence of intraventricular (DYS Sep-Lat Sys) and papillary muscle (DYS
Publication Date: 2009
Research Interests:
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by Mohammad Otahbachi and Cihan Çevik
Publication Date: 2010
Publication Name: Journal of Thrombosis and Thrombolysis
Research Interests: Humans, Platelet aggregation, African American, Epinephrine, Collagen, and 15 moreFemale, Male, Gender Difference, Young Adult, African Americans, Clinical Sciences, Texas, Adult, Ethnic Group, Sex Factors, European Continental Ancestry Group, Reference Values, Healthy Subjects, Arachidonic Acid, and Adenosine Diphosphate
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Successful Endovascular Stenting of Total Juxtarenal Aortic Occlusion Performed through Brachial and Femoral Accessmore
by Mohammad Otahbachi and Cihan Çevik
... Successful Endovascular Stenting of Total Juxtarenal Aortic Occlusion Performed through Brachial and Femoral Access. Mohammad Otahbachi MD,; Ashwani Kumar MD,; Cihan Cevik MD,; Alex Suarez MD. Article first published online: 22 APR... more
... Successful Endovascular Stenting of Total Juxtarenal Aortic Occlusion Performed through Brachial and Femoral Access. Mohammad Otahbachi MD,; Ashwani Kumar MD,; Cihan Cevik MD,; Alex Suarez MD. Article first published online: 22 APR 2009. ...
Publication Date: 2009
Publication Name: Journal of Cardiac Surgery
Research Interests: Stents, Cardiac Surgery, Humans, Male, Cardiac, and 3 moreClinical Sciences, Middle Aged, and Brachial artery
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Publication Date: 2009
Publication Name: International Journal of Cardiology
Research Interests: Cardiology, Death, Electronics, High Voltage, Humans, and 14 moreAnimals, Firearms, Left Ventricular Dysfunction, Association, Acute Coronary Syndrome, Cardiac Arrhythmias, Clinical Study, Sympathetic Nervous System, Cardiomyopathies, Young Men, Catecholamines, Time Course, Takotsubo cardiomyopathy, and Acute stress
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by Mohammad Otahbachi and Cihan Çevik
Publication Date: 2009
Publication Name: International Journal of Cardiology
Research Interests:
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Obscure gastrointestinal (GI) bleeding can be a perplexing and difficult problem in elderly patients, especially if they are hemodynamically unstable. If aortic stenosis is also present, the cause of the GI bleeding may be explained. We... more
Obscure gastrointestinal (GI) bleeding can be a perplexing and difficult problem in elderly patients, especially if they are hemodynamically unstable. If aortic stenosis is also present, the cause of the GI bleeding may be explained. We present a 66-year-old man with a medical history of coronary artery disease who presented with acute GI bleeding. During his hospital course, the patient had a colonoscopy showing diffuse angiodysplasia and an echocardiogram showing severe aortic stenosis. This combination of angiodysplasia and aortic stenosis is known as Heyde's syndrome. It has been hypothesized that the aortic stenosis causes an acquired von Willebrand factor deficiency that leads to GI bleeding. Aortic valve replacement, when possible, can prevent recurrent GI bleeding in these cases, but medical decisions in these cases are complex and difficult.
Publication Date: 2012
Publication Name: Heart & Lung: The Journal of Acute and Critical Care
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Do Comorbid Psychiatric Disorders Contribute to the Pathogenesis of Tako-Tsubo Syndrome? A Review of Pathogenesismore
by Mohammad Otahbachi and Cihan Çevik
Publication Date: 2009
Publication Name: Congestive Heart Failure
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Left ventricular free wall rupture and large pseudoaneurysm after percutaneous coronary interventionmore
by Mohammad Otahbachi and Cihan Çevik
Publication Date: 2009
Publication Name: Cardiovascular Revascularization Medicine
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Behçet's... more
Behçet's disease is a rare chronic autoimmune vasculitis with characteristic skin findings. Vascular involvement generally affects veins more than arteries, and coronary arterial involvement is extremely uncommon. Here we report the significant coronary artery aneurysms detected in a 41-year-old man with Behçet's disease who had been in remission for 13 years. Our case illustrates the necessity of initial non-invasive cardiac assessment of patients with Behçet's disease.
Publication Date: 2009
Publication Name: Cardiovascular Revascularization Medicine
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Left circumflex coronary artery to hepatic vein fistula: a case report and brief review of coronary vasculogenesismore
by Mohammad Otahbachi and Cihan Çevik
Publication Date: 2009
Publication Name: Cardiovascular Revascularization Medicine
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A 60-year-old man who had never sought medical care presented with generalized weakness and dizziness. He was wearing a bandage that covered his left eye, ear, and head. Removal of the bandage showed a large 10 cm × 12 cm fungating ulcer... more
A 60-year-old man who had never sought medical care presented with generalized weakness and dizziness. He was wearing a bandage that covered his left eye, ear, and head. Removal of the bandage showed a large 10 cm × 12 cm fungating ulcer involving the left forehead ...
Publication Date: 2009
Publication Name: The American Journal of the Medical Sciences
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Publication Date: 2010
Publication Name: The American Journal of Forensic Medicine and Pathology
Research Interests: Police, Forensic Pathology, Delirium, Sudden Death, Humans, and 14 morePosture, Clinical Sciences, Prisoners, Cardiac Arrhythmias, Fever, Myocardium, Narcotics, Coronary Circulation, Physiological Stress Markers, Physical Restraint, Catecholamines, Substance-Related Disorders, Takotsubo cardiomyopathy, and The American
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Anterior ST-segment elevation is the hallmark electrocardiographic finding of acute anterior left ventricular infarction that is caused by occlusion in one of the branches of the left coronary artery. We report a case of marked ST-segment... more
Anterior ST-segment elevation is the hallmark electrocardiographic finding of acute anterior left ventricular infarction that is caused by occlusion in one of the branches of the left coronary artery. We report a case of marked ST-segment elevation in the precordial leads, with concomitant inferior ST-segment elevation that was caused by acute occlusion of the marginal branches of the right coronary artery (RCA) causing an isolated right ventricular myocardial infarction (RVMI) during coronary angioplasty. Isolated occlusion of the marginal branches of the RCA appears to be extremely rare. In the case presented, this was caused by an iatrogenic spiral dissection with subsequent stenting of the RCA. This case illustrates that diffuse ST-segment elevation in the precordial leads may occur due to the occlusion of the RCA or its branches. It is important to recognize this scenario, since the treatment of left ventricular myocardial infarction differs from that of RVMI, where maintaining...