| Clinical Study of Transient Tachypnea of the Newborn |
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Young Soo Kweon, Soo Jin Jung, Chang hee Han, Hae Woon Jang, Ki Ho Kim |
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Department of Pediatrics, Pohang St. Mary`s Hospital, Pohang, Korea |
| 신생아 일과성 빈호흡의 임상적 고찰 |
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권영수, 정수진, 한창희, 장해운, 김기호 |
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포항 성모병원 소아과 |
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| Abstract |
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Transient tachypnea of the newborn(TTN) is a benign self-limited disease characterized by early onset and rapid recovery of tachypnea although it may occasionally have a more prolonged and protracted course.
A retrospective clinical study was mad on 29 neonates with TTN admitted to NICU of Pohang St. Mary's Hospital from January 1992 to June 1993.
The results were as follows:
1) TTN(36.2%) was the most common cause of respiratory distress in the neonate followed by idiopathic respiratory distress syndrome(23.8%), pneumonia(18.8%), meconium aspiration syndrome(6.2%), perinatal asphyxia(6.2%), polycythemia(3.8%), anemia(1.2%), persistent fetal circulation(1.2%), paroxysmal supraventricular tachycardia(1.2%) and tracheoesophageal fistula(1.2%)
2) TTN was more frequent in the male term infants but can occur in premature(41.4%) and low birth weight infants(34.5%).
3) The associated perinatal conditions were oxytocin-induction(8 cases, 27.6%), Cesarean delivery(10 cases, 34.5%) and asphyxia(7 cases, 24.2%)
4) Arterial blood gas analysis showed respiratory acidosis in 3 cases and metabolic acidosis in 3 cases but none of TTN showed hypoxia unresponsive to oxygen
5) Chest X-ray showed hyperaeration in 10 cases(34.5%), increased pulmonary vascularity in 8 cases(27.6%), hyperaeration and increased pulmonary vascularity in 6 cases(20.6%) and cardiomegaly in 12 cases(53%).
6) Tachypnea usually appeared within 6hours and abated by 48-72hours but sustained more than 73hours in 7 cases(24.1%)
7) In majority of cases, maximal respiratory rates were below 100 rates/min and administered oxygen concentrations were 20-40%, and their mean values were 81 rates/min, 37.6% respectively.
8) TTN with more prolonged course(≥48hours) was associated with low birth weight infants, prematurity and higher respiratory rates(≥100 breaths a minute)(p<0.05). |
| Key Words:
Respiratory Distress, Tachypnea, Transient Tachypnea of the Newborn |
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