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خرید پکیج
تعداد آیتم قابل مشاهده باقیمانده: مورد

Key points for intraoperative management of aortic or mitral regurgitation

Key points for intraoperative management of aortic or mitral regurgitation
Hemodynamic goals Avoid Monitor Intervention
Normal to fast HR (80 to 100 bpm) Avoid bradycardia

5-lead ECG

Pulse oximetry with visible waveform

Management of bradycardia:
  • Boluses of glycopyrrolate
  • Treat concomitant hypotension with careful titration of ephedrine
  • Low-dose infusion of dobutamine, epinephrine, or dopamine if response to above treatments is not sustained
Normal to low afterload Avoid and/or immediately treat hypertension, targeting mean arterial pressure (or systolic/diastolic indices) rather than systolic pressure alone Consider intra-arterial BP monitoring (particularly in patients who are unstable or undergoing cardiac surgery)

Prevent hypertension by providing adequate anesthetic depth and effective analgesia

Treat hypertension with the use of vasodilators (including calcium channel blockers and sodium nitroprusside)

Treat hypotension with careful titration of ephedrine

Normal to low preload Avoid hypervolemia Assess clinical response to small fluid boluses

Restrictive fluid management

Intravenous nitroglycerin infusion and/or diuretics for volume overload

Maintain contractility Avoid doses of drugs causing significant myocardial depression Hemodynamics, including intra-arterial BP and cardiac output monitoring in unstable patients If inotropic support is needed, infusion of milrinone or dobutamine is preferred. In patients with hypotension and low SVR, addition or substitution of low-dose epinephrine infusion may be necessary to maintain adequate BP.
AR: aortic regurgitation; BP: blood pressure; bpm: beats per minute; ECG: electrocardiogram; HR: heart rate; MR: mitral regurgitation; SVR: systemic vascular resistance.
Graphic 148738 Version 1.0

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