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[Preoperative cardiac risk assessment and diagnosis. The view of the cardiologist]
1Klinik III für Innere Medizin, Köln.
Insights
Perioperative risk assessment is key to preventing cardiovascular complications in noncardiac surgery. Identifying and treating significant coronary artery disease can reduce risks, but prophylactic revascularization in stable patients does not improve outcomes.
Area of Science:
- Cardiology
- Anesthesiology
- Vascular Surgery
Context:
- Cardiovascular complications are the primary cause of morbidity and mortality in noncardiac surgery.
- Effective perioperative risk assessment is essential for patient safety.
Purpose:
- To evaluate diagnostic procedures for perioperative cardiovascular risk assessment in noncardiac surgery.
- To determine the impact of interventions like revascularization on patient outcomes.
Summary:
- Electrocardiography (ECG) is a fundamental tool for patients over 40, often indicating underlying cardiovascular issues.
- Stress testing, stress echocardiography, or scintigraphy can detect significant coronary artery disease.
- Revascularization benefits patients with unstable angina or severe coronary artery disease, but not stable patients, as procedural risk outweighs benefits.
Impact:
- Optimizing preoperative medical treatment, such as blood pressure normalization, can improve outcomes.
- Certain diagnostic tests, while not directly aiding risk assessment, are valuable for managing coexisting conditions like heart failure or valve lesions.
- This research guides clinical decisions in managing cardiovascular risk before noncardiac surgery.
Abstract:
Perioperative morbidity and mortality in noncardiac surgery are mainly due to cardiovascular complications. Therefore, perioperative risk assessment is crucial to avoid these adverse events. In patients above the age of 40 years, the ECG is a basic investigation, often providing hints for cardiovascular diseases. Stress testing and, in special cases, stress echocardiography or scintigraphy (the latter only in those patients, in which exercise is impossible) can detect significant coronary artery disease. The vascularization reduced the perioperative risk in particular in those patients with unstable angina or severe coronary artery disease. However, prophylactic revascularization the stable patient does not improve overall outcome, because the risk of the revascularizing procedure must be added to the risk of noncardiac surgery. Other diagnostic procedures like echocardiography, chest roentgenogram, routine scintigraphy, halter ECG or halter blood pressure measurement do not add information to the perioperative risk assessment, although these techniques might be very relevant in evaluating other coexisting diseases (heart failure; valve lesions, in particular aortic stenoses etc.) and can be useful to improve medical treatment preoperatively (e.g. normalization of blood pressure).