Comparative Data of Two Formulas for Umbilical Venous Catheterization in Infants Under 32 Weeks
Description
This dataset contains the de-identified individual patient data used to compare the accuracy of the Shukla formula and the modified Shukla formula in predicting the optimal insertion depth of umbilical venous catheters (UVC) in preterm infants with a gestational age of less than 32 weeks. The data includes infant demographics, birth parameters, calculated insertion depths using both formulas, the ideal depth determined by X-ray, and catheterization outcomes. The aim of this data sharing is to facilitate the reproducibility of the study findings and to support further research in neonatal vascular access.
Files
Steps to reproduce
This retrospective study was conducted at the Huizhou First Maternal and Child Health Hospital, China. We included preterm infants with a gestational age of less than 32 weeks who underwent umbilical venous catheter (UVC) placement in the Neonatal Intensive Care Unit (NICU).The objective was to compare the accuracy and success rate of two distinct formulas for predicting the optimal UVC insertion depth:Formula A: （Birth weight in kg × 3 + 9 ）/2+1，Formula B: Birth weight in kg × 1.5 +5.5+1cm.For each eligible infant, the theoretical UVC insertion length was calculated separately using both Formula A and Formula B. The actual UVC tip position was confirmed by a standard anteroposterior chest and abdominal X-ray following the catheter insertion procedure. The ideal position for the UVC tip was defined as being at the level of the diaphragm, specifically at the junction of the inferior vena cava and the right atrium.Data were extracted from the hospital's electronic medical record (EMR) system. The collected data for each participant included: Demographics: Gestational age (weeks), birth weight (grams), and birth length (centimeters).Calculated Depths: The predicted insertion depths (in centimeters) derived from both Formula A and Formula B.The primary outcome for comparison was the rate of correct initial tip placement, defined as the catheter tip located within the ideal zone on the first X-ray. Secondary outcomes included the mean absolute error (deviation in cm) from the ideal position for each formula and the incidence of malpositioning.Radiographic Assessment: The actual final position of the UVC tip as documented in the official radiology report.Statistical analysis was performed using SPSSAU.