Mean arterial blood pressure changes in premature infants and those at risk for intraventricular hemorrhage H e n r i e t t a S. B a d a , MD, Sheldon B. Korones, MD, E d w a r d H. Perry, PhD, Kristopher L. A r h e a r t , MS, John D. Ray, PhD, Massroor Pourcyrous, MD, H. Lynn Magill, MD, William Runyan III, MS, G r a n t W. Somes, PhD, Frank C. Clark, PhD, a n d Katherine V. Tullis From the Departments of Pediatrics, Obstetrics and Gynecology, Radiology, and Biostatistics and Epidemiology, and Biomedical Information Transfer Center, University of Tennessee, Memphis, and the Department of Mechanical Engineering, Memphis State University, Memphis, Tennessee

Bedside microcomputer-derived, minute-to-minute mean arterial pressure (MAP) values during the first 48 hours of life were studied in 100 preterm babies with birth weight --1000 gm were higher than in those of lower birth weight. Infants in whom grades 2 to 4 PV-IVH d e v e l o p e d (n = 28) had consistently lower MAP values during the study period. Minute-to-minute variability, expressed as the a v e r a g e of the coefficients of variation at 15-minute intervals, did not differ b e t w e e n birth weight groups, nor did they differ b e t w e e n the PV-IVH group and their m a t c h e d control subjects. However, those with PV-IVH spent a greater percentage of time, with a c o e f f i c i e n t of variation >__13%or

Mean arterial blood pressure changes in premature infants and those at risk for intraventricular hemorrhage.

Bedside microcomputer-derived, minute-to-minute mean arterial pressure (MAP) values during the first 48 hours of life were studied in 100 preterm babi...
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