• Clinical and Experimental Pediatrics
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• 제53권1호
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• pp.1-6
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• 2010

Transient tachypnea of the newborn (TTN), respiratory distress syndrome (RDS), and persistent pulmonary hypertension of the newborn (PPHN) are the three most common disorders that cause respiratory distress after birth. An understanding of the pathophysiology of these disorders and the development of effective therapeutic strategies is required to control these conditions. Here, we review recent papers on the pathogenesis and treatment of neonatal respiratory disease.

• Neonatal Medicine
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• 제25권2호
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• pp.66-71
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• 2018

Purpose: Respiratory morbidity is the most common problem among neonates admitted to neonatal intensive care units. Therefore, the aim of this study was to make a differential diagnosis between transient tachypnea of the newborn (TTN), respiratory distress syndrome (RDS), and pneumonia through comparison of clinical features and test results. Methods: This retrospective study was conducted in 86 infants with TTN, RDS, or pneumonia. These were infants who had respiratory distress, were born after ${\geq}34$ weeks of gestation, and transferred to the neonatal intensive care unit of Kosin University Gospel Hospital between June 1, 2011 and June 30, 2016. Results: The numbers (percentage) of infants with TTN, RDS, and pneumonia were 51 (59.3%), 20 (23.3%), and 15 (17.4%), respectively. Late-preterm and early-term newborns accounted for 65.1% of the infants. Tachypnea was observed in 74.4% of the neonates. The median age at admission was 4 hours (0 to 116) after birth. The infants with RDS had significantly lower birth weights, pH levels, base excess and oxygen saturation levels at admission, longer duration of total ventilator therapy, and hospital stay than those in the other two groups. The infants with pneumonia showed significantly high initial high-sensitivity C-reactive protein levels and significant chest radiographic findings. Conclusion: Early differential diagnosis for TTN, RDS, and pneumonia is challenging because they show similar respiratory symptoms at an early stage. Clinical features and test results can be used to determine the etiology of respiratory distress and early antibiotic treatment.

• Journal of Chest Surgery
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• 제32권1호
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• pp.38-42
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• 1999

1994년 9월에서 1997년 5월까지 신생아 호흡곤란을 보였던 환아들중 폐외 공기 누출을 나타내었던 48례를 대상으로 그 임상 양상을 분석하였는데 일차성 15례, 이차성 33례를 보였고, 순수 폐간질 기종이 19례, 다른 병변과 동반된 기흉이 19례 있었다. 정상 체중아가 많고 24시간내 증상 발현의 경우가 많았다. 폐 질환으로는 유리질 막증, 태변 흡입 증후군, 폐렴 등이 있었다. 25.2%의 원내 사망율을 보였고 유리질막증 환자에서 많았다.

• Tuberculosis and Respiratory Diseases
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• 제40권2호
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• pp.91-97
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• 1993

Pulmonary surfactant is a lipoprotein complex composed primarily of phospholipid and lung specific apoproteins that reduces surface tension in the alveolus and maintains alveolar stability at low lung volume. Adult respiratory distress syndrome still carries a very high morbidity and mortality. The surfactant system is vital to the maintenance of proper lung function, any type of surfactant deficiency, whether primary or secondary, will contribute significantly to the development of pulmonary pathophysiology. Various mechanisms in adult respiratory distress syndrome may be responsible for such alterations in the surfactant system. Surfactant replacement is now an established treatment for neonatal respiratory distress syndrome, reducing both incidence of complications and mortality. With the current knowledge of surfactant physiology and the pathophysiology of the adult respiratory distress syndrome exogenous surfactant treatment or stimulation of endogenous surfactant synthesis and secretion will prove to be beneficial in preventing and treating the adult respiratory distress syndrome. The study of clinical surfactant therapy for adult respiratory distress syndrome is just beginnig and this can be viewed as an area with exciting potential. As soon as surfactant preparations become more widely available trials should begin to define the role of surfactant treatment in the adult respiratory distress syndrome as an adjunct to available treatment techniques.

• Neonatal Medicine
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• 제16권2호
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• pp.101-109
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• 2009

Pulmonary surfactant (PS) therapy in premature infants has a remarkable impact on improving survival and outcomes in neonatal respiratory distress syndrome (RDS). Early PS therapy involves instillation of PS upon delivery of very premature infants or if there is evidence of RDS, such as an increased requirement of oxygen 2 hours after birth, especially in infants <30 weeks gestation. Early PS treatment in very premature infants results in a significant reduction in the severity of RDS, mortality, and incidence of pneumothorax, pulmonary interstitial emphysema, and bronchopulmonary dysplasia in comparison with late PS treatment. According to European and American consensus guidelines on the management of neonatal RDS, early PS instillation should be considered for infants <30 weeks gestation, infants with a birth weight <1,250 g, or if the mother has not received antepartum corticosteroids. We suggest that the Korean health insurance policy on RDS be modified so that PS can be used for better clinical outcomes of very premature infants.

• Journal of Yeungnam Medical Science
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• 제35권2호
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• pp.187-191
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• 2018

Background: Respiratory distress syndrome (RDS) is a one of the most common cause of respiratory morbidity and mortality in neonates. This study was conducted to investigate the risk factors for RDS in full-term neonates. Methods: We conducted this retrospective study using medical records. The study group included 80 full-term neonates diagnosed with RDS and hospitalized in the neonatal intensive care unit between January 2012 and December 2016, at Yeungnam University Hospital. We analyzed sex, gestational age, birth weight, delivery method, maternal age, number of pregnancy, history of abortion, and complication of pregnancy. The control group included 116 full-time neonates who were hospitalized with jaundice during the same period. Results: The incidence of full-term RDS was more common in males (odds ratio [OR], 3.288; 95% confidence interval [CI], 1.446-7.479), cesarean section (OR, 15.03; 95% CI, 6.381-35.423), multiparity (OR, 4.216; 95% CI, 1.568-11.335). The other factors rendered no significant results. Conclusion: The risk factors for RDS in full-tern neonates were identified as male sex, cesarean section, and multiparity. Further studies involving more institutions are needed to clarify the risk factors for RDS in full-term infants.

• Journal of Chest Surgery
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• 제20권4호
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• pp.851-854
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• 1987

Congenital diaphragmatic hernia remains a disease with high neonatal mortality rate despite recent advance in neonatal intensive care. We experienced one case of the congenital diaphragmatic hernia with acute respiratory distress and left pulmonary hypoplasia in the neonate. The simple closure was performed through left paramedian approach after diagnosis. The postoperative course was uneventful except wound disruption. The patient was follow-up with good general condition.

• Perinatology
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• 제29권4호
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• pp.159-164
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• 2018

Objective: To compare neonatal respiratory morbidity of twins according to birth order related to gestational age and mode of delivery. Methods: We performed the retrospective research of the medical records of 3,224 neonates (1,612 twin pairs) born in a single center from January 2011 to December 2015. Subjects were classified into four gestational age groups: very (<32 weeks), moderate (32-33 weeks), late (34-36 weeks) preterm, and term (${\geq}37weeks$) groups. We investigated clinical characteristics and respiratory morbidity according to birth order related to gestational age group and mode of delivery. Results: We found increased risk of respiratory morbidity in second-born twin than first-born twin (P=0.039). Second-born twin was associated with increased risk of respiratory distress syndrome (RDS) in late preterm group (odds ratio [OR] 2.8, 95% confidence interval [CI] 1.30-5.95), and transient tachypnea of newborn in term group (OR 1.4, 95% CI 1.03-1.81). In vaginal delivery mode, there was no difference of respiratory morbidity between first and second-born twin in each group, but in cases of Cesarean delivery, second-born twin was related with a greater risk of RDS in late preterm group (OR 2.3, 95% CI 1.07-5.09). Birth order and Cesarean section independently increased the risk of RDS (adjusted OR [aOR] 1.69, 95% CI 1.12-2.54; aOR 2.14, 95% CI 1.25-3.66, respectively). Conclusion: Second-born twin and Cesarean delivery are associated with increased risk of RDS, especially in late preterm twins.

• Clinical and Experimental Pediatrics
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• 제62권5호
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• pp.166-172
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• 2019

Purpose: This study aimed to evaluate vitamin D status at birth in very-low-birth-weight infants (VLBWIs: <1,500 g) and to determine the association between vitamin D level and respiratory morbidity. Methods: A retrospective study was conducted at Soonchunhyang University Bucheon Hospital between November 2013 and November 2017. We collected blood samples and data on respiratory morbidity from 230 VLBWIs on the first day of life. Patients who were transferred to other hospitals (n=19), died before 36 weeks of gestational age (n=18), or whose blood samples were not collected immediately after birth (n=5) were excluded. Finally, 188 patients were enrolled. VLBWIs with different vitamin D levels were compared with respect to demographic features, maternal diseases, respiratory morbidities, and other neonatal diseases. Results: The mean serum vitamin D level, as measured by 25-hydroxyvitamin D (25(OH)D), was $13.4{\pm}9.3ng/mL$. The incidence of vitamin D deficiency (<20 ng/mL) was 79.8%, and 44.1% of preterm infants had severe vitamin D deficiency (<10 ng/mL). Logistic analysis shows that a low serum 25(OH)D level (<20 ng/mL) was a risk factor for respiratory distress syndrome (odds ratio [OR], 4.32; P=0.010) and bronchopulmonary dysplasia (OR, 4.11; P=0.035). Conclusion: The results showed that 79.8% of preterm infants in this study had vitamin D deficiency at birth. Low vitamin D status was associated with respiratory morbidity, but the exact mechanism was unknown. Additional studies on the association between vitamin D level and neonatal morbidity are required.

• Journal of Yeungnam Medical Science
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• 제16권1호
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• pp.52-59
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• 1999

미숙아의 여러 가지 합병증 중에서도 선생아 호흡 곤란 증후군은 가장 빈도가 높고 사망률도 높은 질병이다. 이제까지 많은 저자들이 자궁내 성장기 동안에 폐 표면 활성제 생성을 증가시킴으로써 신생아 호흡 곤란 증후군을 예방할 수 있는 약제로 corticosteroid에 대한 연구를 하였으나, 산모와 태아 감염에 중요한 위협 요인이 되어 이 약의 사용이 제한적이다. 따라서 steroid의 부작용 때문에 태아의 폐를 성숙시킬 수 있는 ambroxol에 관심을 가지게 되었으며 이에 저자들은 출생 전 산모에게 투여한 ambroxol이 신생아 호흡 곤란 증후군의 발생 빈도에 어떤 영향을 미치는지와 그 부작용에 대해 알아보고자 하였다. 1996년 1월부터 1997년 12월까지 영남대학교 의과대학 부속 병원 산부인과에 입원하였던 36주 이전의 조산이 예견된 산모에게 ambroxol(Mucosolvan$^{(R)}$, Boehringer Ingelheim) 1,000mg을 5% glucose 용액에 녹여 2시간 이상 정주하며 3일에서 5일간 투여하였다. 또한 대조군에서는 생리 식염수를 정주하였다. 조기 분만의 원인이나 대상 환아 평균 재태 연령, 남녀비, 출생 체중과 1, 5분 Apgar 점수가 7점 미만인 미숙아의 수에는 양 군간의 의미있는 차이는 없었다. 그러나 대조군에서는 21명 중 13명에서 신생아 호흡 곤란 증후군이 발생하였고 ambroxol 사용군에서는 21명 중 6명에서 신생아 호흡 곤란 증후군이 발생하여 두 군간에 의미있는 차이가 있었다(p<0.05). 출생 후 산소 치료와 인공 환기를 필요로 했던 경우는 대조군에서는 각각 18, 12명이었고 ambroxol 사용군에서는 각각 9, 8명이었다. 산소치료를 요구된 시간은 ambroxol 군에서 낮았으나 인공 환기가 필요하였던 시간은 ambroxol 군에서 더 길었다. 그 외 미숙아에게 나타난 주산기 합병증의 빈도는 ambroxol 사용군과 대조군을 비교해 보면 두 군이 같거나 ambroxol 군이 더 적었다. Ambroxol 투여 전과 후의 산모의 혈액학적, 생화학적 검사에 의미있는 변화는 없었다. 그리고 ambroxol 사용군에서 산모가 호소하는 부작용으로는 경미한 오심이 3례 있었으나 구토, 두통이나 현기증, 알레르기 반응 등은 나타나지 않았다. 그러므로 본 연구에서는 미숙아 출생 전 산모에게 투여한 ambroxol은 신생아 호흡 곤란 증후군의 발생 빈도를 감소시킨다고 생각되며 이를 위해 산모에게 안전하게 사용할 수 있는 약제로 생각된다.