KMID : 0438520050120020172
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Journal of the Korean Society of Neonatology 2005 Volume.12 No. 2 p.172 ~ p.178
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Measurements of Oral and Gastric pH in Neonates
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Cho Eun-Young
Rho Eui-Jung Lim Jae-Woo Cheon Eun-Jung Ko Kyong-Og Lee Young-Hyuk Kim Kyil-Young
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Abstract
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Purpose:The purpose of this study was to measure the oral and gastric pH among preterm and term infants by the simple experimental method using pH paper.
Methods:This prospective study included a total of 60 neonates born at Konyang University Hospital from June 2004 to September 2004. Each neonate¡¯s oral and gastric pH levels were measured with pH paper at 6 hourly intervals on the first and the fifth day of life. 15 preterm infants were examined until twenty first day of life.
Results:The oral and gastric pH of 60 neonates were 6.3¡¾0.5 and 4.1¡¾1.0 on the first day and 6.0¡¾0.3 and 3.9¡¾0.9 on the fifth day, respectively. The preterm infant had lower oral and gastric pH of 6.4¡¾0.6 and 4.3¡¾1.1 on the first day and 6.0¡¾0.2 and 4.2¡¾1.0 on the fifth day, respectively in comparison to those of term infant¡¯s oral and gastric pH of 6.3¡¾0.4, 4.0¡¾0.9 on the first day and 6.1¡¾0.3 and 3.7¡¾0.8 on the fifth day, respectively. The gastric pH¡¯s of preterm infant on the first, fifth and twenty first day of life were 4.6¡¾1.4, 4.3¡¾1.0 and 4.2¡¾1.0, respectively.
Conclusion:This study reports the value of neonates¡¯ oral and gastric pH on the first and fifth day of life. The average gastric pH of neonate is higher than that of adult¡¯s and preterm infant¡¯s gastric pH is higher than term infant¡¯s. The gastric pH of preterm infant decreased in time.
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KEYWORD
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Gastroesophageal reflux, Oral pH, Gastric pH
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