myocardial ischemia monitoring
Continuous surveillance for signs of inadequate coronary perfusion using multiple diagnostic modalities during cardiac surgery.
Full Definition
Myocardial ischemia monitoring involves comprehensive assessment of coronary perfusion adequacy using electrocardiography, transesophageal echocardiography, pulmonary artery catheter measurements, and laboratory markers during cardiac surgery. This monitoring is critical during periods of aortic cross-clamping, bypass weaning, and postoperative care when coronary circulation may be compromised. Key indicators include ST-segment changes, regional wall motion abnormalities, elevated filling pressures, decreased cardiac output, and rising cardiac enzyme levels. Prompt recognition enables interventions such as coronary revascularization, inotropic support, or mechanical circulatory assistance.
Usage
Usage note: Specify which monitoring modalities detected ischemia and document intervention timeframes.
In Context
- "Myocardial ischemia monitoring revealed new ST-depression in leads II and aVF during bypass separation." — Intraoperative monitoring report
- "Enhanced ischemia monitoring protocols improved early detection of coronary compromise post-CABG." — Quality assurance review