Respiratory Rates Derived From Arterial Blood Pressure Waveforms in Telemetered Dogs.

The objective of this study was to extract low frequency respiratory "artifacts" from a standard arterial blood pressure (ABP) waveform to simultaneously derive reliable breathing rates (BR). Arterial blood pressure derived BR values were characterized against respiratory rates simultaneously obtained from the Respiratory Inductive Plethysmography (RIP) system (EMKA). Reference compounds were introduced to evaluate responsiveness of the derived measures to respiratory depressants and stimulants.

Translational assessment of cardiac contractility by echocardiography in the telemetered rat.

Introduction: Cardiac contractility was evaluated using standard inotropic agents in rats. We compared indices of cardiac contractility, i.e.