The capnography-tilt test for the diagnosis of hyperventilation syncope.

We describe the capnography tilt test (CTT) for the diagnosis of hyperventilation syncope. The CTT is a 10-min supine, 30-min head-up tilt test with simultaneous monitoring of end-tidal PCO2 (ETPCO2). Hyperventilation (HV) was defined as ETPCO2 < or = 25 mmHg.

Hypotensive reactions on passive head-up tilt testing of hypertensive patients.

With the aid of a protracted passive postural test, the rate of occurrence and the variants of orthostatic hypotensive reactions in hypertensive patients were studied. Three hundred and eighty-two consecutive tilt tests in 161 hypertensive patients, 89.4% of whom were taking antihypertensive medications, were reviewed.

Comparison of the 10-minute supine-30-minute tilt test with 24-hour ambulatory blood pressure for the diagnosis of diastolic systemic hypertension.

A variant of the protracted tilt test, the 10-minute supine -30-minute tilt test (10S-30TT), has been proposed by us for the evaluation of blood pressure (BP). The present investigation compares parameters of diastolic BP by 3 methods: office measurements, 10S-30TT, and 24-hour ambulatory monitoring; the last method served as a reference standard. Twenty patients presenting at the office with diastolic BP values ranging from 80 to 120 mm Hg (median 90) were studied.