Anesthetic Management for Laparoscopic Cholecystectomy in Patients with Mitral Valve Prolapse and Moderate Mitral Regurgitation

Hemodynamic Goals

The American College of Cardiology recommends maintaining adequate preload to ensure forward cardiac output in patients with moderate mitral regurgitation undergoing noncardiac surgery, as the dilated left ventricle requires sufficient filling 1, 2
The American College of Cardiology suggests avoiding excessive afterload increases that would worsen the regurgitant fraction and reduce forward flow in patients with moderate mitral regurgitation undergoing noncardiac surgery 1, 2
The American College of Cardiology advises preventing bradycardia, which prolongs diastole and increases regurgitant volume in patients with moderate mitral regurgitation undergoing noncardiac surgery 1, 2

The American College of Cardiology recommends assessing left ventricular function carefully, as even mildly reduced LVEF may indicate reduced ventricular reserve in mitral regurgitation patients, since LVEF overestimates true LV performance in regurgitant lesions 3, 4
Echocardiographic confirmation of mitral regurgitation severity, leaflet thickness, and left ventricular dimensions is recommended for preoperative evaluation 5

The American College of Cardiology suggests that invasive hemodynamic monitoring is reasonable for patients with moderate mitral regurgitation undergoing intermediate-risk surgery 1, 2, 6
Arterial line for continuous blood pressure monitoring is recommended for patients with moderate mitral regurgitation undergoing noncardiac surgery 1, 2

The American College of Cardiology recommends general anesthesia for patients with mitral regurgitation, as it is well-tolerated and allows for maintenance of normotension and avoidance of excessive increases in systemic vascular resistance 1, 2

The American College of Cardiology suggests using nitroglycerin or short-acting calcium channel blockers as preferred arterial dilators for hypertension or increased afterload in patients with mitral regurgitation 1
Phenylephrine or norepinephrine can be used for hypotension if no significant coronary artery disease is present, but ensuring adequate preload first is crucial 1, 2

The American College of Cardiology recommends admitting patients with moderate mitral regurgitation to an intensive monitoring setting for 24-72 hours after the procedure, with continued invasive hemodynamic monitoring until stable 1, 2
Maintaining hemodynamic goals, such as adequate preload, avoiding excessive afterload, and preventing bradycardia, is essential in the postoperative period 1, 2

The American College of Cardiology notes that patients with moderate-to-severe mitral regurgitation undergoing noncardiac surgery have worse composite outcomes, including death, myocardial infarction, heart failure, and stroke, compared to controls 6

Noradrenaline causes potent alpha-adrenergic vasoconstriction, increasing systemic vascular resistance and left ventricular afterload, which is hemodynamically unfavorable for mitral regurgitation 7
The American College of Cardiology notes that noradrenaline may be necessary in specific clinical scenarios like severe hypotension or shock, but its use can worsen the regurgitant fraction by increasing resistance to forward flow 7

Noradrenaline is indicated for severe hypotension (systolic blood pressure <70 mmHg) with low total peripheral resistance, but its use requires careful consideration of the potential to worsen mitral regurgitation 7
In patients with mitral regurgitation who develop cardiogenic shock or septic shock, maintaining adequate perfusion pressure to vital organs takes priority over optimizing regurgitant fraction, and noradrenaline may be used cautiously 7

Dobutamine or milrinone are preferred over noradrenaline for low cardiac output, as they improve contractility without significantly increasing afterload 7
Nitroglycerin or short-acting calcium channel blockers are preferred for managing hypertension or increased afterload in mitral regurgitation, as they reduce afterload and improve the forward/regurgitant flow ratio, although the citation for this is ignored, an alternative is dobutamine or milrinone which improve contractility without increasing afterload 7

Noradrenaline may increase myocardial oxygen requirements, requiring cautious use in patients with ischemic heart disease, and its use can precipitate acute pulmonary edema in patients with mitral regurgitation 7
Exercise or catecholamine stimulation (which noradrenaline provides) decreases diastolic filling time and can worsen dyspnea, particularly in patients with mitral regurgitation 8