Comparison between ultrasonography and X-ray as evaluation methods of central venous catheter positioning and their complications in pediatrics

Prospective study comparing ultrasound versus chest X-ray for confirming central venous catheter placement in 21 pediatric patients. Ultrasound showed 100% specificity but only 33% sensitivity using four-chamber cardiac view with saline flush, making it useful for ruling in correct placement but requiring radiographic confirmation when negative.