Effects of Hyperventilation Can hyperventilation cause syncope?
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منابع مشابه
The role of the capnography head-up tilt test in the diagnosis of syncope in children and adolescents.
OBJECTIVES To evaluate the role of the capnography head-up tilt test (CHUTT) in the diagnosis of syncope in pediatric patients. METHODS The CHUTT is a head-up tilt test with concomitant capnometry. Hyperventilation on CHUTT was diagnosed when the patient's end-tidal carbon dioxide pressure (ETPCO2) was </=25 mm Hg. Hyperventilation syncope was diagnosed when three criteria were met: loss of c...
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In a prospective study of consecutive patients (age 15 or over) with transient loss of consciousness 45 patients had a history of seizure and 74 patients had a history of syncope. All patients had an EEG, ECG, laboratory tests and a hyperventilation test and were followed for an average of 14.5 months. Epileptiform activity in the interictal EEG had a sensitivity of 0.40 and a specificity of 0....
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