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Related Experiment Video

Updated: Jul 23, 2025

Cardiac Pressure-Volume Loop Analysis Using Conductance Catheters in Mice
08:15

Cardiac Pressure-Volume Loop Analysis Using Conductance Catheters in Mice

Published on: September 17, 2015

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Simultaneous biventricular pressure-volume analysis in rats.

M Miklovic1,2, P Kala1,3, V Melenovsky1,4

  • 1Center for Experimental Medicine, Institute for Clinical and Experimental Medicine - IKEM, Prague, Czech Republic.

Journal of Physiology and Pharmacology : an Official Journal of the Polish Physiological Society
|July 15, 2023
PubMed
Summary
This summary is machine-generated.

Simultaneous biventricular pressure-volume (PV) analysis provides accurate cardiac function assessment. This standardized protocol enables simultaneous measurement of both ventricles, crucial for understanding heart diseases.

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Last Updated: Jul 23, 2025

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Simultaneous Electrocardiography Recording and Invasive Blood Pressure Measurement in Rats
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15.4K
Closed Chest Biventricular Pressure-Volume Loop Recordings with Admittance Catheters in a Porcine Model
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Area of Science:

  • Cardiovascular Physiology
  • Cardiac Mechanics
  • Animal Models of Cardiovascular Disease

Background:

  • Pressure-volume (PV) analysis is vital for assessing load-independent cardiac function.
  • Sequential measurement of right (RV) and left (LV) ventricular function overlooks their interdependence in diseases like heart failure.
  • Simultaneous assessment is crucial for understanding biventricular interactions.

Purpose of the Study:

  • To describe a standardized protocol for simultaneous biventricular PV analysis in rats.
  • To evaluate the necessity of simultaneous catheterization versus sequential measurements for biventricular PV relationships.
  • To demonstrate the feasibility and value of this protocol in various cardiovascular disease models.

Main Methods:

  • Developed a protocol for simultaneous RV and LV PV analysis in rats using conductance-micromanometer catheters.
  • Incorporated a controllable preload reduction maneuver via inferior vena cava balloon catheter.
  • Compared simultaneous biventricular PV analysis with sequential RV and LV measurements.

Main Results:

  • Demonstrated the feasibility of simultaneous biventricular PV analysis.
  • Showcased accurate measurement of contractility parameters like end-systolic pressure-volume relationship (ESPVR) and dP/dtmax-EDV.
  • Presented PV loop data in normotensive, hypertensive, and heart failure rat models.

Conclusions:

  • Simultaneous biventricular PV analysis is a valuable tool for studying cardiac hemodynamics and contractility.
  • This protocol facilitates the investigation of biventricular differences and interdependence in cardiovascular disease research.
  • The standardized method aids scientists in understanding complex cardiac interactions in various disease states.