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Prophylactic digitalization preoperatively of patients with arteriosclerotic heart disease
Insights
Prophylactic digitalization may improve cardiac function in patients with impaired left ventricular function undergoing major surgery. Digitalized hearts showed increased ability to handle postoperative pressure loads, though further research is needed.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Anesthesiology
Background:
- Patients with arteriosclerotic disease often have impaired left ventricular function.
- Major surgical procedures can impose significant hemodynamic stress.
- The role of prophylactic digitalization in this context requires investigation.
Purpose of the Study:
- To investigate the hemodynamic effects of prophylactic digitalization before major vascular surgery.
- To assess the impact of digitalis on cardiac function in patients with pre-existing left ventricular impairment.
Main Methods:
- A prospective study involving 16 patients with impaired left ventricular function undergoing elective vascular surgery.
- Patients were divided into two groups: one received prophylactic digitalis, the other served as a control.
- Hemodynamic parameters including pulmonary artery pressure, wedge pressure, central venous pressure, arterial blood pressure, heart rate, cardiac output, blood volume, and arterial/venous oxygen content were measured.
Main Results:
- No significant preoperative differences were observed between the digitalis and control groups.
- Patients receiving digitalis demonstrated improved cardiac function before anesthesia and postoperatively.
- Both groups exhibited a normal hemodynamic response to surgical trauma.
Conclusions:
- Prophylactic digitalization suggests a potential benefit in enhancing the cardiac reserve of patients with impaired left ventricular function.
- The digitalized heart may better withstand postoperative pressure loads.
- Further studies are warranted to definitively establish the utility of prophylactic digitalization in this patient population.
Abstract:
This study was undertaken to investigate the hemodynamic effect of prophylactic digitalization before major surgical procedures. Sixteen patients, all admitted for an elective vascular operation for arteriosclerotic disease and all with impaired left ventricular function, were investigated. In half of the patients, digitalis was given before the operation, the other half of the patients served as the control study. The measured parameters were pulmonary artery mean pressure, pulmonary capillary wedge pressure, central venous pressure, mean arterial blood pressure, heart rate, cardiac output, blood volume and arterial, as well as venous, oxygen content. Preoperatively, before digitalization, no significant differences were noted between the two groups at rest and during exercise. Before anesthesia and postoperatively, those given digitalis had improved cardiac function. Those in both groups, however, had a normal hemodynamic response to the surgical trauma. In this study, a definite answer is not provided concerning the usefulness of prophylactic digitalization but an increase in the ability of the digitalized heart to withstand the imposition of a pressure load postoperatively is suggested.