[The interrelation of central hemodynamic and kidney function indices in patients with ischemic heart disease]

Area of Science:

• Cardiology
• Nephrology
• Physiology

Background:

• Ischemic heart disease (IHD) and chronic circulatory insufficiency (CCI) significantly impact cardiovascular and renal function.
• Understanding the regulatory mechanisms of renal function under stress is crucial for managing these conditions.

Purpose of the Study:

• To investigate hemodynamic and renal function responses to increased preload in patients with IHD and CCI.
• To examine the role of the renin-angiotensin-aldosterone system (RAAS) in regulating these functions under load conditions.

Main Methods:

• Studied 29 patients with IHD and CCI (grade IIA) and 27 healthy controls.
• Assessed indices of central hemodynamics and renal function.
• Monitored changes under load conditions with increased preload.
• Measured activity of the renin-angiotensin-aldosterone system.

Main Results:

• Patients with IHD and CCI exhibited deterioration in central hemodynamics and renal function indices.
• These functional declines occurred despite no significant changes in RAAS activity.
• Healthy individuals showed no essential changes in these parameters under similar conditions.

Conclusions:

• Increased preload negatively affects hemodynamics and renal function in patients with IHD and CCI.
• The RAAS may not be the primary regulator of renal function changes in this patient group under the studied conditions.
• Further research is needed to elucidate the specific mechanisms involved in renal function regulation during circulatory insufficiency.