Preoperative preparation of patients with cardiomyopathies in non-cardiac surgery

Area of Science:

• Cardiology
• Anesthesiology
• Internal Medicine

Background:

• Cardiomyopathies are myocardial diseases characterized by structural and functional heart muscle disorders.
• These conditions are distinct from coronary artery disease, hypertension, valvular disease, and congenital heart disease.
• Key phenotypes include dilated, hypertrophic, restrictive, and arrhythmogenic right ventricular cardiomyopathies.

Purpose of the Study:

• To outline the perioperative risks associated with various cardiomyopathies.
• To detail essential preoperative evaluation components for patients with cardiomyopathy.
• To provide guidance on managing pharmacotherapy and surgical timing in this patient population.

Main Methods:

• Review of existing literature and clinical guidelines on cardiomyopathy management.
• Identification of specific risks (heart failure, arrhythmias) for different cardiomyopathy types.
• Compilation of standard preoperative assessment protocols, including diagnostic tests and laboratory evaluations.

Main Results:

• Patients with dilated and hypertrophic cardiomyopathy face increased risks of perioperative congestive heart failure.
• Hypertrophic and arrhythmogenic right ventricular cardiomyopathy patients are more susceptible to perioperative arrhythmias.
• Optimized drug therapy and delayed surgery (when feasible) are recommended for untreated or decompensated cardiomyopathy.

Conclusions:

• A multidisciplinary approach involving anesthesiologists, cardiologists, and surgeons is vital for preoperative evaluation.
• Thorough patient assessment and medical optimization are critical for mitigating perioperative complications in cardiomyopathy patients.
• Timely intervention and management strategies are essential for improving surgical outcomes in individuals with heart muscle disorders.