Evaluation of stroke volume variations obtained with the pressure recording analytic method.

Objective: To investigate whether stroke volume variations obtained with the pressure recording analytic method can predict fluid responsiveness in mechanically ventilated patients with circulatory failure.

Design: Prospective study.

Setting: Surgical intensive care unit of a university hospital.

The ability of pulse pressure variations obtained with CNAP™ device to predict fluid responsiveness in the operating room.

Background: Respiratory-induced pulse pressure variations obtained with an arterial line (ΔPP(ART)) indicate fluid responsiveness in mechanically ventilated patients. The Infinity® CNAP™ SmartPod® (Dräger Medical AG & Co. KG, Lübeck, Germany) provides noninvasive continuous beat-to-beat arterial blood pressure measurements and a near real-time pressure waveform.