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Pulse rhythm

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...

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Updated: Jun 24, 2025

Invasive Hemodynamic Assessment for the Right Ventricular System and Hypoxia-Induced Pulmonary Arterial Hypertension in Mice

Invasive Hemodynamic Assessment for the Right Ventricular System and Hypoxia-Induced Pulmonary Arterial Hypertension in Mice

Published on: October 24, 2019

Continuous Right Ventricular Pressure Monitoring in Cardiac Surgery.

André Denault¹, Etienne J Couture², Tjorvi Perry³

¹Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.

Journal of Cardiothoracic and Vascular Anesthesia

|June 11, 2024

Summary

This summary is machine-generated.

Elevated right ventricular pressure gradients and pressures are common during cardiac surgery. However, these early measurements do not predict right ventricular dysfunction or failure post-surgery.

Keywords:

cardiac anesthesiology cardiac surgery hemodynamic hemodynamic monitoring right ventricle right ventricular pressure monitoring

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Area of Science:

Cardiology
Cardiac Surgery
Critical Care Medicine

Background:

Right ventricular (RV) dysfunction is a significant complication in cardiac surgery, increasing morbidity and mortality.
Abnormal RV function can be detected through RV pressure monitoring.
Early identification of RV abnormalities is crucial for patient outcomes.

Purpose of the Study:

To determine the prevalence of abnormal right ventricular diastolic pressure gradient (RVDPG) and right ventricular end-diastolic pressure (RVEDP) before and after cardiopulmonary bypass (CPB).
To assess if pre-CPB RVDPG predicts difficult CPB separation, RV dysfunction, or RV failure.
To evaluate the diagnostic utility of RVDPG and RVEDP in identifying RV dysfunction.

Main Methods:

Prospective study conducted at a tertiary care cardiac institute.
Involved cardiac surgical patients undergoing various procedures.
Automated electronic quantification of RVDPG and RVEDP, correlated with transesophageal echocardiography and postoperative outcomes.

Main Results:

Abnormal RVDPG was observed in 80% of patients at baseline.
Patients frequently experienced elevated RVDPG both before CPB initiation (50.2%) and after CPB separation (60.6%).
Pre-CPB RVDPG was not associated with difficult CPB separation, RV dysfunction, or RV failure.

Conclusions:

Elevated RVDPG and RVEDP are prevalent in cardiac surgery patients.
Pre-CPB RVDPG and RVEDP are not predictive of postoperative RV dysfunction or failure.
RVDPG and RVEDP can serve as diagnostic indicators for RV dysfunction and failure.