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[Transmitral flow analysis during the coronary artery bypass surgery]
Masui. the Japanese Journal of Anesthesiology
|June 1, 1997
Summary
Doppler transmitral flow (TMF) analysis reveals left ventricular diastolic dysfunction during coronary artery bypass surgery. Impaired diastolic function patients showed reduced cardiac output and atrial contributions, indicating TMF
Area of Science:
- Cardiology
- Echocardiography
- Cardiac Surgery
Context:
- Left ventricular diastolic function (LVDF) assessment is crucial in cardiac surgery.
- Transesophageal echocardiography (TEE) and Doppler transmitral flow (TMF) are key diagnostic tools.
- Limited data exists on LVDF changes during coronary artery bypass (CAB) surgery.
Purpose:
- To investigate TMF parameters as predictors of LVDF during CAB surgery.
- To analyze changes in LVDF during different phases of CAB surgery.
- To compare LVDF between patients with good and impaired diastolic function.
Summary:
- Twenty-eight patients undergoing CAB surgery were studied using TEE.
- Patients were grouped based on the E/A velocity ratio (good LVDF: E/A ≥ 1; impaired LVDF: E/A < 1).
- Both groups showed decreased E/A and E velocities during surgery, indicating LV dysfunction. Impaired LVDF group had inadequate atrial compensation.
Impact:
- TMF analysis provides insights into dynamic LVDF changes during CAB surgery.
- Findings highlight the potential for TMF to identify patients at risk of intraoperative diastolic dysfunction.
- This study underscores the importance of monitoring LVDF during complex cardiac procedures.