[New diagram method of evaluating hemodynamics during operations]

Area of Science:

• Cardiovascular Physiology
• Surgical Monitoring

Context:

• Extracorporeal circulation during heart surgery presents challenges in assessing cardiac function.
• Real-time monitoring of hemodynamic and myocardial contractility is crucial for patient management.

Purpose:

• To introduce and evaluate a new method for assessing heart function during cardiac surgery.
• To utilize pressure-volume (PV)-diagrams for dynamic evaluation of cardiac pumping and circulatory status.

Summary:

• A novel PV-diagram method was applied to 11 patients undergoing heart surgery with extracorporeal circulation, involving 89 measurements.
• The technique allows real-time assessment of the heart's pumping function relative to cardiac cycle phases.
• It also provides prompt visual, dynamic assessment of circulatory status.

Impact:

• This method offers efficient evaluation of corrective heart surgery effects.
• Potential to improve intraoperative decision-making and patient outcomes.
• Facilitates a deeper understanding of cardiac mechanics under altered physiological conditions.