Orthostatic cardiovascular responses to postural sway and discreet counterpressure maneuvers.

Counterpressure maneuvers (CPM) are movements used to delay or abort syncope, but may have practical barriers to use. We recently showed exaggerated postural sway produces protective responses against syncope. Accordingly, we aimed to evaluate a series of discreet, accessible movements as novel preventative CPM.

Evaluation of stroke volume estimation during orthostatic stress: the utility of Modelflow.

Advanced blood pressure monitoring devices contain algorithms that permit estimation of stroke volume (SV). Modelflow (Finapres Medical Systems) is one common method to non-invasively estimate beat-to-beat SV. However, Modelflow accuracy during profound reductions in SV is unclear.