AUTOMATED DETERMINATION OF PULSE AMPLITUDE CHANGES IN FINGER PHOTOPLETHYSMOGRAPHY WAVEFORM DURING THE VALSALVA MANEUVER HAS HIGH SENSITIVITY AND SPECIFICITY FOR IDENTIFYING ELEVATED LEFT VENTRICULAR END DIASTOLIC PRESSURE

Improved noninvasive techniques for evaluating left ventricular end diastolic pressure (LVEDP) are needed. We have developed a handheld device for assessing LVEDP based on the change in pulse amplitude (PA) of a finger photoplethysmography (PPG) waveform during a Valsalva maneuver (VM). We