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. 2020 Jun 30;13(1):2402. doi: 10.4022/jafib.2402

Figure 1. VASIS IIB Cardioinhibitory Positive Tilt-test.

Figure 1.

shows in the upper panel beat-to-beat blood pressure (BP) recording from a finger photoplethysmographic device as (SYS) (range 0-200 mmHg) and in the lower panel heart rate (HR) (range 0-200 bpm). Time in minutes is shown at the bottom of each panel. The test begins with the supine phase. At event mark 1, the patient is tilted up to 600, BP and HR rise initially, there follows a stable phase. At event mark 2, nitroglycerine 400 mcg is administered sublingually with the effect of BP reduction and HR rise. At event mark 3, patient was dizzy and BP collapsed steeply with a modest fall in HR preceding this BP fall. At maximum BP fall to 40mmHg the patient lost consciousness with 5 seconds of asystole (not well seen at this recording speed) and was tilted down, event mark 4. The patient recovered consciousness at event mark 5. This is classified as VASIS IIB severely cardioinhibitory tilt positive.