The Valsalva Maneuver and The Indicor™ Technology

The Indicor™ is based on long understood principles regarding the Valsalva maneuver, a forced expiration against a closed glottis, which induces changes in pulse pressure that reflect cardiac filling pressures.  The Indicor™ and Navigator ™ app help standardize the maneuver via an easy to use handheld device and interactive patient instructions enabling proper performance of the maneuver.   Finger photoplethysmography simultaneously records the patient’s pulse pressure which is then analyzed by the device to indicate whether the patient’s response to the maneuver is normal.  The animation below provides a basic overview of the physiology of the cardiovascular response to the maneuver and how Indicor™ works.