Physiological vital sign reference ranges for well late preterm newborns calculated during a typical 2 h newborn period between 2 h and 7 days of life

Objectives . To calculate 95% reference ranges for heart rate, respiratory rate, oxygen saturation, temperature and blood pressure for well late preterm newborns between 34 +0/7 and 36 +6/7 weeks of gestation during typical neonatal behaviour. Approach. A single-site, prospective cohort study in a major Australian quaternary hospital between February and September 2019. A total of 120 late preterm newborns had their heart rate, respiratory rate and oxygen saturation measurements recorded every 2 s for up to 2 h with unconditional 95% reference ranges determined using a linear mixed effects model with random intercept for total standard deviation calculation including repeated measures. Temperature and blood pressure measurements were collected twice —at the start and conclusion of the data recording period —with weighted 2.5th and 97.5th percentiles calculated using the mean value. Main results. A total of 364 577 heart rate, 365 208 respir...
Source: Physiological Measurement - Category: Physiology Authors: Source Type: research