Brain oxygenation monitoring during head-up tilt test in patient with vasodepressive neurocardiogenic syncope Measurement of the brain oxygenation with the technique of NIRS (near infrared spectroscopy) can be useful in assessment of the... more
Brain oxygenation monitoring during head-up tilt test in patient with vasodepressive neurocardiogenic syncope Measurement of the brain oxygenation with the technique of NIRS (near infrared spectroscopy) can be useful in assessment of the vasovagal syncope (VVS). We present a case of 23-year old woman in which this technique was used during head-up tilt test (TT). She had periodical junctional rhythm in Holter monitoring, functional conduction disturbances in transesophageal atrial pacing and cardiodepressive VVS in TT. We have performed another TT with NIRS monitoring. She has demonstrated syncope in vasodepressive mechanism 4 minutes after nitroglycerin administration. We have observed in NIRS gradual increase of levels of oxygenated hemoglobin (HbO 2) and total hemoglobin (HbT) during initial sinus tacycardia before syncope and short very deep decrease of HbO 2 and HbT and increase of reduced hemoglobin during the syncope. During 1,5 years follow-up and treatment with diprophylline and edrophonium syncope didn't occur. (Folia Cardiol. 2000; 2: 125–130)
