Orthostatic vasovagal syncope is the sudden loss of consciousness resulting from a temporary impairment of cerebral blood flow, within approximately an hour of standing. Patients who suffer from this problem have "vasovagal syndrome". The purpose of this thesis was to devise a method to detect the syndrome following the assumption of upright position.
Data from 106 syncopal patients undergoing head-up tilt table testing (HUT) were acqu ... [truncated at 450 characters in length]
|Subject||Cerebral circulation Hypotension, Orthostatic Signal processing|
The technique of transcranial Doppler ultrasound (TCD) was used to assess cerebral blood flow (CBF) in humans. Studies were performed at rest and during dynamic submaximal exercise. In the resting experiments, TCD was combined with the technique of dynamic end-tidal forcing to study the dynamics of the CBF response to step changes in end-tidal (i.e. arterial) PC02 and PO2 In the resting and exercise experiments, the degre ... [truncated at 450 characters in length]
|Author||Poulin, Marc J.;|
|Subject||Cerebral circulation Transcranial Doppler ultrasonography|