Assessing Rodent Cardiac Function in vivo Using Hemodynamic Pressure-Volume Loops.

Area of Science:

• Cardiovascular Physiology
• Translational Research
• Heart Failure Pathophysiology

Background:

• Heart failure (HF) is a major global cause of mortality, necessitating advanced research into failing heart mechanisms.
• Rodent models are vital for studying HF, requiring precise in vivo cardiac functional assessment methods.
• Existing methods like echocardiography and telemetry offer insights, but hemodynamic analysis provides deeper detail.

Purpose of the Study:

• To review best practices for in vivo cardiac hemodynamic assessment using pressure-volume (PV) loops in rodent hearts.
• To highlight the advantages, disadvantages, and applications of PV-loop analysis in cardiovascular research.
• To emphasize the need for standardization to improve data accuracy and reproducibility in HF research.

Main Methods:

• Detailed hemodynamic assessment using pressure-volume (PV) loops in intact, beating rodent hearts.
• Simultaneous measurement of cardiac pressure and volume signals.
• Application of PV-loop analysis to study molecular cardiac physiology and therapeutic interventions.

Main Results:

• PV-loop analysis provides a gold standard for in-depth in vivo cardiac function evaluation in rodents.
• This methodology has significantly expanded knowledge of cardiac physiology and disease mechanisms.
• PV-loop data aids in dissecting the cardiovascular impact of genetic modifications and therapeutic strategies.

Conclusions:

• PV-loop analysis is indispensable for detailed in vivo cardiac function and structure assessment in experimental settings.
• Standardization and optimization of PV-loop measurements are critical for accelerating heart failure research progress.
• Adherence to best practices ensures data accuracy and reproducibility, vital for translational cardiovascular research.