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[Ventricular aneurysm and coronary heart disease. Pathophysiology, differential therapy, and postoperative
Insights
Left ventricular aneurysms in coronary heart disease can alter hemodynamics. Surgical aneurysmectomy improves cardiac function and circulation, though a slight decrease in cardiac output may occur post-operation.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Medical Diagnostics
Context:
- Coronary heart disease can lead to left ventricular aneurysms, potentially causing hemodynamic instability.
- The severity of the aneurysm and remaining myocardial function influence cardiac compensation.
- Conservative therapies include digitalis, diuretics, nitrates, and beta-blockers, with careful consideration for antiarrhythmic needs.
Purpose:
- To evaluate the impact of left ventricular aneurysmectomy on hemodynamic parameters and cardiac function in patients with coronary heart disease.
- To compare the efficacy of conservative medical management versus surgical intervention for managing left ventricular aneurysms.
Summary:
- Left ventricular aneurysms present an additional risk due to altered hemodynamics.
- Conservative management involves digitalis, diuretics, nitrates, and beta-blockers, tailored to myocardial function.
- Surgical aneurysmectomy improves resting and exercise hemodynamic parameters, including pulse pressure and circulation, despite a minor post-operative reduction in cardiac output.
Impact:
- Surgical intervention, specifically aneurysmectomy, offers significant improvement in cardiac function and circulation for patients with left ventricular aneurysms.
- The study highlights the importance of considering surgical options when conservative therapy fails to stabilize hemodynamic parameters.
- Findings provide valuable insights for optimizing treatment strategies in patients with complex coronary heart disease manifestations.
Abstract:
In the course of coronary heart disease an aneurysmal dilatation of the left ventricle may occur. This may be an additional risk for the patient by changed haemodynamics. Depending on the extent of the aneurysm and the contractile potency of the remaining myocard the cardiac compensation may be sufficient. A reduction of the pump efficiency is not necessarily the consequence. In case there is an increasing cardiac insufficiency by means of a pathologic ventricular filling pressure pulse, the best therapy is digitalis in combination with a reduction of volume by sodium-selective diuretics. Under same haemodynamic conditions the treatment of angina pectoris consists of long acting nitrites in combination with a betablocking agent having some intrinsic activity. Special care for the choic of medicaments has to be taken in relation to the sufficiency of the remaining myocard, if an antiarrhythmic therapy is necessary. If there is no stabilisation of the haemodynamic parameters by conservative therapy, the left ventricular function is meliorated by surgical aneurysmectomy. The data demonstrate, that under resting condition a normalisation and under exercise condition at least a melioration of pulse pressure and circulation is achieved after resection of the aneurysma. A small but measurable decrease in cardiac output under exercise condition is the consequence of a persisting cardiodepressive effect due to the operation.