High-Dose Hydroxocobalamin for Refractory Vasoplegia Post Cardiac Surgery

Area of Science:

• Cardiology
• Critical Care Medicine
• Pharmacology

Background:

• Refractory vasoplegic shock is a life-threatening complication post-cardiac surgery with a poor prognosis.
• Failure to respond to catecholamine vasopressors necessitates alternative treatments.

Purpose of the Study:

• To evaluate the efficacy and safety of high-dose hydroxocobalamin as a rescue therapy for refractory vasodilatory shock.
• To assess the impact of hydroxocobalamin on hemodynamic parameters and vasopressor requirements.

Main Methods:

• Retrospective case series of seven patients with refractory vasoplegic shock post-cardiac surgery.
• Administration of high-dose hydroxocobalamin as a rescue intervention.

Main Results:

• Hydroxocobalamin administration led to immediate and sustained improvements in mean arterial blood pressure.
• Significant reduction in vasopressor requirements was observed post-treatment.
• No adverse events or deaths were attributed to hydroxocobalamin.

Conclusions:

• High-dose hydroxocobalamin is a safe and effective rescue therapy for refractory vasoplegic shock following cardiopulmonary bypass.
• This vitamin B12 formulation offers a promising treatment option for patients refractory to conventional therapies.