Publications by authors named "G L Heyer"
Background: Distinguishing patients with psychogenic nonsyncopal collapse (PNSC), a conversion disorder that resembles syncope, can pose a difficult clinical challenge. Using the open-ended question "what does it feel like to faint?," the present study aimed to characterize how patients with PNSC perceive and communicate the prodromal symptoms associated with their attacks by comparing narratives between patients with PNSC and those with syncope.
Methods: During a 42-month database-type study of tilt-table diagnoses, all patients with a history of fainting were asked the open-ended question.
The conversion disorder that appears like syncope is common but poorly recognized. The study aimed to develop and validate a brief, clinician-administered screening tool to discriminate psychogenic nonsyncopal collapse (PNSC) among young patients referred for fainting. Consecutive patients with PNSC and with syncope (15.
View Article and Find Full Text PDFObjective: To characterize the quantitative electroencephalographic (QEEG) patterns associated with tilt-induced syncope in youth.
Methods: Several QEEG parameters were analyzed. Data were calculated for peak or nadir changes with syncope for amplitude-EEG, fast Fourier transform (FFT) power in several frequency ranges, 8-13 Hz/1-4 Hz frequency ratio, and FFT edge.
Background: A previous study of electroencephalography (EEG) changes with syncope led to a finding that some young patients develop prolonged periods of tilt-induced hypotension, but they do not lose consciousness. The present study aim was to compare patterns of hemodynamic changes, measures of duration, and sweating between these patients and patients with tilt-induced vasovagal syncope.
Methods: In an observational study, qualitative changes in hemodynamic parameters were compared between patients with prolonged hypotension (n = 30) and with syncope (n = 30).