Noonan syndrome: an anesthesiologist's perspective

Area of Science:

• Cardiology
• Pediatric Anesthesiology
• Medical Genetics

Background:

• Noonan syndrome (NS) is a common genetic disorder frequently associated with significant cardiac anomalies.
• Pulmonary stenosis (PS) and hypertrophic obstructive cardiomyopathy (HOCM) are the most prevalent cardiac lesions in NS patients.
• The presence of HOCM in NS poses risks of acute congestive heart failure due to hemodynamic instability.

Observation:

• This report details a case of a four-year-old boy with NS presenting for management of both PS and HOCM.
• Transesophageal echocardiography (TEE) was utilized for comprehensive cardiac assessment.
• TEE facilitated confirmation of preoperative diagnoses and intraoperative monitoring.

Findings:

• TEE confirmed preoperative findings and identified no new cardiac anomalies.
• Intraoperative TEE monitoring guided surgical decisions and assessed repair adequacy.
• The use of TEE contributed to a favorable surgical outcome for the patient.

Implications:

• This case highlights the critical role of TEE in the perioperative management of pediatric patients with Noonan syndrome and complex congenital heart disease.
• Optimized anesthetic and fluid management, alongside TEE guidance, are essential for improving outcomes in NS patients with HOCM.
• TEE serves as an invaluable tool for real-time assessment and decision-making in complex cardiac surgeries for NS patients.