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[Ischemia, myocardial infarction and epidural anesthesia in patients with coronary disease]
1Département d'Anesthésie-Réanimation, Hôpital Pitié-Salpêtrière, Paris.
Insights
Epidural anesthesia can benefit coronary artery disease patients, but may also cause myocardial ischemia due to decreased blood pressure or other factors. Careful monitoring is crucial for managing these risks.
Area of Science:
- Cardiology
- Anesthesiology
- Cardiovascular Research
Background:
- Epidural anesthesia is often associated with beneficial cardiovascular effects in patients with coronary artery disease.
- Studies indicate it can reduce myocardial oxygen demand and improve left ventricular function.
Observation:
- This report presents two cases of myocardial complications (ischemia) occurring during epidural anesthesia.
- These cases contrast with the generally accepted beneficial effects, potentially due to the severity of coronary artery disease in the patients.
Findings:
- Detrimental effects of epidural anesthesia, such as decreased arterial pressure, can compromise coronary perfusion and lead to myocardial ischemia.
- Myocardial ischemia during epidural anesthesia may occur through mechanisms other than just reduced arterial pressure, including hemodynamically-unrelated events.
- The management of myocardial ischemia in this context is illustrated, alongside a discussion on the link between ischemia and myocardial infarction.
Implications:
- These findings highlight the potential risks of epidural anesthesia in severe coronary artery disease patients.
- It emphasizes the need for vigilance regarding myocardial ischemia, even when arterial pressure is maintained.
- The reports contribute to understanding the complex relationship between anesthesia, coronary artery disease, and myocardial complications.
Abstract:
In patients with coronary artery disease, the beneficial effects of epidural anesthesia are well known and often emphasized. Thus, several studies have shown a decrease in the determinants of myocardial oxygen consumption, and an improvement in regional and global left ventricular performance. The disadvantages of epidural anesthesia in patients with coronary artery disease are also well known, however, rarely reported. These detrimental effects are dominated by a decrease in arterial pressure which in turn may compromise the coronary perfusion pressure and induce myocardial ischemia. These 2 case reports illustrate the occurrence of myocardial complications in relation to epidural anesthesia. These case reports contrast with data from the literature showing a beneficial influence of epidural anesthesia on the myocardium. However, the severity of the coronary artery disease in these 2 reported patients may explain this discrepancy. These case reports pointed out that the decrease in arterial pressure is not the exclusive mechanism by which myocardial ischemia may be observed during epidural anesthesia since an hemodynamically-unrelated ischemic episode is described. The treatment of myocardial ischemia during epidural anesthesia is illustrated by these 2 case reports. A relationship between myocardial ischemia and myocardial infarction is discussed from these observations.