Figure 1.

Courtesy of Artur Fedorowski MD and Fabrizio Ricci MD (Malmo, Sweden) depicting blood pressure (upper traces) and heart rate (lower trace) during a head-up tilt test-induced mixed collapse pattern of vasovagal faint. In this case, nitroglycerin was administered sublingually after 20 min of passive upright posture proved non-diagnostic. The expanded images illustrate the collapse using the same format beginning with administration of nitroglycerin; events, prodrome, syncope, tilt-down and awakening are labelled. Time base is shown between the left two panels in minutes. The scales are blood pressure 0–150 mmHg and heart rate 0–150 bpm.