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[Study of the left ventricular function using a polygraphic method in patients with systemic arterial hypertension]
Minerva Medica
|January 14, 1982
Summary
Systolic time intervals reveal prolonged pre-expulsion periods in chronic hypertension patients due to increased isometric contraction time. This suggests a left ventricle compensation mechanism for increased afterload.
Area of Science:
- Cardiology
- Physiology
Context:
- Systemic arterial hypertension is a prevalent cardiovascular condition.
- Evaluating cardiac function in hypertensive patients is crucial for understanding disease progression.
Purpose:
- To investigate systolic time intervals using polygraphy in patients with systemic arterial hypertension.
- To identify potential alterations in cardiac mechanics related to hypertension duration.
Summary:
- Polygraphic evaluation of systolic time intervals showed an increased pre-expulsion period (P.E.P.), specifically a longer isometric contraction time (I.C.T.), in patients with long-standing hypertension.
- No significant differences were observed in recent hypertension or control groups.
- Authors attribute the P.E.P. increase to a left ventricular compensation mechanism to overcome aortic resistance and elevated afterload.
Impact:
- Findings suggest a compensatory mechanism in the left ventricle of hypertensive patients.
- These alterations may occur in the absence of overt left ventricular insufficiency.
- Mechanocardiographic modifications may provide insights into early hypertensive heart disease.