Preintervention imaging and intraoperative management care of the hypertrophic obstructive cardiomyopathy patient

Area of Science:

• Cardiology
• Cardiac Surgery
• Medical Imaging

Background:

• Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiomyopathy, with low annual mortality.
• Surgical septal myectomy is a standard treatment for symptomatic obstructive HCM.
• Intraoperative transesophageal echocardiography (TEE) is crucial for surgical planning, monitoring, and assessment.

Purpose of the Study:

• To review the perioperative assessment and management strategies for patients undergoing surgery for hypertrophic obstructive cardiomyopathy.
• To highlight the challenges posed by dynamic hemodynamic changes during surgical septal myectomy.

Main Methods:

• This review synthesizes current literature on perioperative care for HCM surgery.
• It focuses on the role of transesophageal echocardiography in guiding management.
• Key considerations include hemodynamic stability, rhythm control, and pharmacologic support.

Main Results:

• Dynamic changes in preload, afterload, and sympathetic tone can affect left ventricle outflow tract (LVOT) obstruction during surgery.
• Maintaining sinus rhythm, appropriate heart rate, and avoiding hypotension are critical.
• TEE provides real-time assessment of LVOT gradient and mitral valve motion.

Conclusions:

• Effective perioperative management of HCM surgery necessitates a thorough understanding of hemodynamic principles.
• Optimizing preload, afterload, and heart rate, alongside rhythm control, is essential to minimize LVOT obstruction.
• TEE is indispensable for intraoperative decision-making and post-repair evaluation.