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COMPARATIVE STUDY
JOURNAL ARTICLE
Perinatal factors in patent ductus arteriosus in very low-birthweight infants.
BACKGROUND: The relationship between hemoglobin and patent ductus arteriosus (PDA) has not been discussed before. The aim of this study was to assess the influence of hemoglobin and perinatal factors on PDA in very low-birthweight (VLBW) infants.
METHODS: Using data from the Premature Baby Foundation of Taiwan (PBFA), the characteristics, perinatal factors, and hemoglobin of VLBW infants with and without PDA and treatment were compared.
RESULTS: Between January 2008 and December 2010, 89 VLBW infants were admitted to hospital. The overall survival rate was 87.6%. Twelve infants were excluded. Compared to those without PDA, the 34 infants with PDA received oral indomethacin or surgery, had smaller mean gestational age (GA; 27.93 ± 1.818 weeks, P = 0.000003), lower mean birthweight (BW; 1031 ± 259 g, P = 0.0001), significantly lower Apgar score at 5 min, more severe respiratory distress syndrome (RDS; grade 3 or 4), greater use of surfactants, and lower mean hemoglobin (P = 0.018) after birth than those without PDA. Compared to those with indomethacin, the seven infants with surgery had lower mean GA (26.43 ± 1.718 weeks, P = 0.011), significantly lower Apgar scores at 1 min, but higher platelet count (P = 0.002) after birth, and more red blood cell transfusions (P = 0.039).
CONCLUSIONS: Smaller GA, lower BW, lower Apgar score at 5 min, more severe RDS, greater use of surfactants, and lower hemoglobin after birth place VLBW infants at greater risk of PDA. Proper prenatal care, and prevention of premature labor and delivery may be the most important preventative factors. The appropriate hemoglobin level for PDA closure requires further investigation.
METHODS: Using data from the Premature Baby Foundation of Taiwan (PBFA), the characteristics, perinatal factors, and hemoglobin of VLBW infants with and without PDA and treatment were compared.
RESULTS: Between January 2008 and December 2010, 89 VLBW infants were admitted to hospital. The overall survival rate was 87.6%. Twelve infants were excluded. Compared to those without PDA, the 34 infants with PDA received oral indomethacin or surgery, had smaller mean gestational age (GA; 27.93 ± 1.818 weeks, P = 0.000003), lower mean birthweight (BW; 1031 ± 259 g, P = 0.0001), significantly lower Apgar score at 5 min, more severe respiratory distress syndrome (RDS; grade 3 or 4), greater use of surfactants, and lower mean hemoglobin (P = 0.018) after birth than those without PDA. Compared to those with indomethacin, the seven infants with surgery had lower mean GA (26.43 ± 1.718 weeks, P = 0.011), significantly lower Apgar scores at 1 min, but higher platelet count (P = 0.002) after birth, and more red blood cell transfusions (P = 0.039).
CONCLUSIONS: Smaller GA, lower BW, lower Apgar score at 5 min, more severe RDS, greater use of surfactants, and lower hemoglobin after birth place VLBW infants at greater risk of PDA. Proper prenatal care, and prevention of premature labor and delivery may be the most important preventative factors. The appropriate hemoglobin level for PDA closure requires further investigation.
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