Procedures involving pediatric group is always challenging. Our aim is to compare conventional anatomical landmark technique versus the ultrasound-guided technique for Subclavian vein (SCV) cannulation in pediatric cardiac surgical patients. Material & Methods:100 patients between 2-12 years who required Subclavian vein (SCV) cannulation received catheter insertion either by conventional [n=50] or by ultrasound-guided technique [n=50] in cardiac surgeries. We observed time taken for preparation

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... for the procedure, failed catheter placement, risk of complications, number of attempts and time to successful catheterization and infection rate, cost, incidence of venous thrombosis by ultrasound on removal of catheter in both the group were observed. Observation & Results: The overall complication rate was higher in conventional group than in the ultrasound-guided group. The number of attempts for successful placement was significantly higher in conventional group, which was accompanied by an increased access time. Infection rate was even slightly more in conventional group. Although there were a higher number of attempts, longer access time, and a more frequent complication rate in conventional group, the success rate was found to be comparable between both the two groups. In conventional group 1 patient was found with thrombosis in the vein after removal of catheter, which may be due to multiple punctures in the vein . Conclusion: Ultrasound guidance improved the success rate in terms of reducing morbidity of central line cannulation in Cardiac patients. Our study indicates that ultrasound guided Subclavian vein cannulation requires less time and lower rate of immediate complications.