In this randomized clinical study, neonates who require umbilical venous catheter (UVC) insertion as part of their routine care at anytime during their NICU admission will be randomized to one of the 2 formulas for estimation of the pre-insertion UVC depth (umbilicus to the nipple in cm minus 1 (UN - 1) or birth weight based formula (\[(3× birth weight (Kg) + 9)/2+1)\]. UVC will be inserted under sterile condition as per unit protocol. To verify the UVC tip position, a thoracoabdominal radiograph will be taken. In addition, the investigators will do a ultrasound of the heart to assess the exact location of the catheter tips as soon as possible but within 6 hours of insertion.
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Proportion of correctly inserted UVC at optimum catheter tip position
Timeframe: within 12 hours