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Journal of the Korean Society of Neonatology 2001;8(1):110-118.
Published online May 1, 2001.
Intra-arterial Blood Pressure Changes in Very Low Birth Weight Infants During the First Seven Days of Life.
Young Jun Kim, Youn Hee Jee, Chae Hyeok Lee, Jung Are Kim, Young Pyo Chang
1Department of Pediatrics, College of Medicine, Dankook University, Cheonan, Korea.
2Department of Pediatrics, College of Medicine, Pochon CHA University, Kumi CHA Hospital, Kumi, Korea.
극소 저출생 체중아에서 생후 7일 동안의 동맥내 혈압의 변화
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Abstract
PURPOSE
We aimed to assess the influence of perinatal factors on intra-arterial mean blood pressures of very low birth weight infants during the first seven days of life and the association of intra-arterial mean blood pressures on the common morbidities and neonatal death of very low birth weight infants.
METHODS
The retrospective study on intra-arterial mean blood pressures over the first seven days of life in 103 very low birth weight infants who admitted to the neonatal intensive care unit at the Dankook University Hospital from Jan. 1996 to Dec. 2000 was done. Trend data for each infants were assessed in 9 time periods until seven days of age. Perinatal factors that might influence intra-arterial mean blood pressures and the association of intra-arterial mean blood pressures on neonatal death and common morbidities were assessed.
RESULTS
Intra-arterial mean blood pressures of very low birth weight infants increased with birth weight and gestational age (P<0.05), and significantly increased with postnatal age over the seven day periods from 35.0+/-4.9 mmHg (period 1) to 44.2+/-6.5 mmHg (period 9). Intra-arterial mean blood pressures of infants weighing less than 1,000 g were significantly lower than infants weighing 1,000 to 1,499 g at all each time periods (P< 0.05). Intra-arterial mean blood pressures were found to correlate significantly with antenatal steroid (P<0.005), and correlate inversely with PDA (P<0.001), pulmonary hemorrhage (P<0.005) and ROP (P<0.05).
CONCLUSION
Intra-arterial mean blood pressures in very low birth weight infants during the first seven days were found to correlate significantly with postnatal age, gestational age, birth weight and antenatal steroid and probably correlate with some common morbidities of very low birth weight infants. It is therefore important to maintain adequate blood pressure ranges during the first seven days of life that are the most critical periods of illness for the majority of very low birth weight infants.
Key Words: Blood pressure, Very low birth weight infant


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