The goal of this study was to compare ultrasound-guided central venous catheterization via the IJV to the JSVC using the supraclavicular approach in children. The main questions it aims to answer are:

1. Are ultrasound-guided central venous catheterization via the internal jugular vein (IJV) and via the jugular-supraclavicular vein (JSVC) using the supraclavicular approach equivalent in terms of procedural efficacy (e.g., success rate, time to cannulation) in children?
2. Are these two techniques comparable in terms of safety (e.g., complication rates, adverse events) in pediatric patients?

Inclusion Criteria:

• Children aged 1 month to 14 years, admitted to the pediatric intensive care unit of the anesthesiology and critical care department at Béchir Hamza Children's Hospital in Tunis, or scheduled for major elective surgery under general anesthesia requiring central venous catheter placement.

Exclusion Criteria:

• Patients in whom ultrasound revealed a thrombotic formation in the vein.
• Patients for whom the vein could not be adequately visualized on ultrasound