Preoperative Echocardiographic Assessment for Anesthesia Management

Left Ventricular Systolic Function

• The American Heart Association recommends that left ventricular ejection fraction (LVEF) <35-40% significantly increases perioperative risk of cardiac death, MI, and heart failure, with sensitivity of 50% and specificity of 91% for predicting perioperative complications 1, 2
• LVEF <40% warrants heightened perioperative monitoring and may require optimization before elective surgery, according to the American College of Cardiology 1
• Normal LVEF ranges are 53-73% by 2D methods, and >54% for men and >57% for women by 3D echocardiography, as stated by the European Society of Cardiology 3

Diastolic Function Assessment

• The European Society of Cardiology states that E/e' ratio is the single most validated parameter for estimating left ventricular filling pressures, with pooled correlation coefficient of 0.56 with invasive measurements 6, 7
• E/e' ≥13 suggests elevated filling pressures and increased risk of perioperative pulmonary edema, according to the European Heart Journal 8, 5
• Each unit increase in E/e' carries a hazard ratio of 1.05 for adverse outcomes, as reported by the European Journal of Heart Failure 6

Left Atrial Volume Index (LAVI)

• The European Heart Journal recommends that LAVI ≥34 mL/m² indicates chronic diastolic dysfunction and elevated filling pressures 8, 5
• LAVI >40 mL/m² combined with elevated tricuspid regurgitation velocity significantly increases risk, according to the European Journal of Heart Failure 6

Right Ventricular Function and Pulmonary Pressures

• The European Society of Cardiology states that peak tricuspid regurgitation velocity >3 m/s (PASP >40 mmHg) indicates pulmonary hypertension requiring specific anesthetic considerations 8, 4
• PASP 40-50 mmHg suggests moderate pulmonary hypertension; >60 mmHg indicates severe disease, as reported by the European Heart Journal 4

Advanced Parameters for High-Risk Cases

• The European Journal of Heart Failure recommends that LV GLS >-16% (less negative) indicates subclinical LV dysfunction even with preserved LVEF 3
• Normal LV GLS is >-20% (more negative than -20%), according to the European Heart Journal 5, 3

Common Pitfalls to Avoid

• The European Heart Journal warns that PASP estimated by echo has limited positive predictive value (25-64%) for confirming pulmonary hypertension—consider right heart catheterization for definitive assessment in borderline cases 9
• The European Society of Cardiology states that E/e' ratio can be misleading in atrial fibrillation, severe mitral regurgitation, and with pacemakers—use additional diastolic parameters for confirmation 8
• The European Heart Journal recommends documenting timing relative to dialysis in renal patients, as volume status dramatically affects all measurements 5
• The European Society of Cardiology suggests recording blood pressure, heart rate, and rhythm at time of echo, as these affect interpretation of all parameters 5