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[Are central hemodynamics the decisive factor in the manifestation of chronic heart failure?]
Insights
Chronic heart failure assessment is inconsistent. Peripheral circulation and tissue metabolism are crucial, alongside central hemodynamics, with right ventricular and diastolic function needing more attention.
Area of Science:
- Cardiology
- Physiology
Context:
- Chronic heart failure (CHF) assessment often shows inconsistencies between various diagnostic methods.
- Previous studies highlight discrepancies in data from central hemodynamics, echocardiography, and functional capacity tests.
Purpose:
- To comprehensively evaluate 40 patients with varying grades of cardiac failure.
- To investigate the relationships between functional classification, echocardiographic, invasive hemodynamic parameters, and spiroergometric indicators.
Summary:
- Loose correlations were found between resting hemodynamic/echocardiographic parameters and spiroergometric findings.
- Stronger associations emerged between spiroergometric results and invasive hemodynamic parameters post-load, notably cardiac index and systemic vascular resistance.
- Peripheral circulation and tissue metabolism appear as vital as central hemodynamics in CHF clinical presentation.
Impact:
- Highlights the underappreciated roles of right ventricular function and diastolic cardiac function in CHF.
- Suggests a more integrated approach to assessing CHF, considering peripheral factors.
- Informs clinical practice regarding comprehensive patient evaluation in chronic heart failure.
Abstract:
In the past some authors revealed that data assembled during examinations of the central haemodynamics, echocardiography, subjective complaints, physical findings and load tolerance in patients with chronic heart failure are not mutually consistent. The authors examined therefore comprehensively 40 patients with different grades of cardiac failure. They revealed very loose relations between the grade of functional classification, echocardiographic and invasive haemodynamic parameters at rest on the one hand and spiroergometric indicators on the other hand. Closer relations with spiroergometric findings were obtained with values of invasive haemodynamic parameters after a load, in particular values of the cardiac index, and systemic vascular resistance. The authors conclude that for clinical manifestations of chronic cardiac failure the peripheral circulation and tissue metabolism is at least equally important as changes of central haemodynamics. Moreover, the importance of the right ventricular function and diastolic cardiac function is not sufficiently appreciated.