기계적 환기 요법을 시행 받은 미숙아에서 고탄산혈증과 뇌실내 출혈의 발생과의 관계
Association of Hypercapnia in the First Week of Life with Severe Intraventricular Hemorrhage in the Ventilated Preterm Infants
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목 적:기계적 환기요법을 시행 받은 미숙아에서 생후 첫 7일 동안 고탄산혈증과 중증 뇌실내 출혈의 발생과의 연관성을 알아보고자 본 연구를 시행하였다. 방법:출생 후 7일 이상 기계적 환기 요법을 받은 재태주령 37주 미만의 미숙아를 대상으로 하여, 3단계 이상의 뇌실내 출혈로 진단받은 경우 IVH 군(n=19)으로, 정상 또는 1단계 뇌실내 출혈을 보인 경우, 출생 체중과 주수를 대응하여 대조군(n=38)으로 선정하였다. 두 군 간의 생후 첫 7일 동안 혈중 이산화탄소 분압(PaCO2)의 최대값, 최소값, 평균값과 변화 정도(fluctuation)를 측정하기 위한 지표로 혈중 이산화탄소 분압의 최대값과 최소값의 차이(maximum-minimum)와 평균값의 표준 편차를 비교 분석하였다. 결과:재태주령과 출생체중은 IVH 군은 26.9±1.7주, 975.3±262.5 g이었고, 대조군은 26.8±1.5주, 915.6±198.2 g이었다. IVH 군에서 생후 7일 동안 혈중 이산화탄소 분압의 최대값(IVH 군 vs. 대조군, 86.1± 18.4 mmHg vs. 60.1±11.6 mmHg, P<0.001), 평균값(47.5±5.6 mmHg vs. 41.2±6.3 mmHg, P=0.004), 최대값과 최소값의 차이(60.3±20.9 mmHg vs. 35.5± 11.8 mmHg, P<0.001), 평균값의 표준편차(14.0±4.4 mmHg vs. 9.0±2.4 mmHg, P<0.001)는 유의하게 높았으나 최소값은 두 군 간의 차이가 없었다. 또한 IVH 군에서 파종성혈관내응고[11 (57.9%):9 (23.7%), P= 0.011], 폐출혈[12 (63.2%):10 (26.3%), P=0.007], 공기누출 증후군[4 (21.1%):1 (2.6%), P=0.021]의 빈도가 많았고, 생후 7일 동안 인공 호흡기 지수의 최대값이 통계적으로 유의하게 높았다. 출혈성 경향, 공기누출 증후군, 인공 호흡기 지수의 영향력을 통제한 후에는 혈중 이산화탄소 분압의 최대값이 odds ratio 1.324 (95% CI: 1.011-1.733, P=0.041)로 중증 뇌실내 출혈과 통계적으로 유의한 연관성을 보였다. 결론:기계적 환기 요법을 시행 받은 미숙아에서 출생 후 첫 7일 동안 극심한 고탄산혈증은 뇌출혈의 다른 위험 인자의 영향을 배제한 후에도 중증 뇌실내 출혈의 발생과 연관성을 보였다. 따라서 생후 초기에 호흡기 유발 폐손상을 막기 위해 고탄산혈증을 허용하는 시도는 중요하지만, 과도한 고탄산혈증과 심한 이산화탄소 분압의 변화를 피하고 적절한 이산화탄소 분압을 유지하는 노력이 필요할 것으로 생각된다.
Abstract
Purpose:The aim of this study was to examine whether hypercapnia during the first seven days of life was associated with severe intraventricular hemorrhage (IVH) in preterm infants requiring mechanical ventilation. Methods:A matched pair analysis was performed for 19 preterm infants with severe IVH (grade≥3) and 38 infants with no severe IVH (normal or grade 1), who required mechanical ventilation for more than seven days. The univariate and multivariate analysis of severe IVH with maximal and minimal PaCO2, averag PaCO2, SD of PaCO2, and difference in the PaCO2 were assessed. The major perinatal factors and maximal ventilator index (VI) were also compared. Results:Infants with severe IVH a had higher maximal PaCO2 (86.1±18.4 mmHg vs. 60.1± 11.6 mmHg, P<0.001) and mean PaCO2 (47.5±5.6 mmHg vs. 41.2±6.3 mmHg, P=0.004) and a larger SD or difference in PaCO2 (14.0±4.4 mmHg vs. 9.0±2.4 mmHg; 60.3±20.9 mmHg vs. 35.5±11.8 mmHg, P<0.001), however the minimal PaCO2 values did not differ between the groups. Disseminated intravascular coagulation, pulmonary hemorrhage, and the air leak syndrome were more frequent in the IVH group than in the controls. The maximal VI on each day was higher in the IVH group. The multivariate logistic regression analysis after controlling for bleeding tendency, showed that the air leak syndrome, maximal VI, and maximal PaCO2 independently associated with severe IVH [OR, 1.324 (95% CI, 1.011-1.733; P= 0.041)]. Conclusion:Extreme hypercapnia was significantly associated with severe IVH in preterm infants, after adjustment for major perinatal risk factors. Frequent monitoring of the PaCO2 may be important for early detection of inadvertent hypercapnia and prompt correction of high PaCOS levels.
참고문헌 (34)
- Ambalavanan N, "Prediction of neurologic morbidity in extremely low birth weight infants", J Perinatol, 20, pp.496~503 (2000)
- Sherlock RL, "Neurodevelopmental sequelae of intraventricular haemorrhage at 8 years of age in a regional cohort of ELBW", very preterm infants, 2005, pp.81, 909~916
- Pryds O, "Heterogeneity of cerebral vasoreactivity in preterm infants supported by mechanical ventilation", J Pediatr, 115, pp.638~645 (1989)
- Tsuji M, "Cerebral intravascular oxygenation correlates with mean arterial pressure in critically ill premature infants", Pediatrics, 106, pp.625~632 (2000)
- Leahy FA, "Effect of CO2 and 100% O2 on cerebral blood flow in preterm infants", J Appl Physiol, 48, pp.468~472 (1980)
- Pryds O, "Effect of PaCO2 and haemoglobin concentration on day to day variation of CBF in preterm neonates", Acta Paediatr Scand Suppl, 360, pp.33~36 (1989)
- Hansen NB, "Stonestreet BS. The effects of variations in PaCO2 on brain blood flow and cardiac output in the newborn piglet", Pediatr Res, 18, pp.1132~1136 (1984)
- Wyatt J, "Commentary on cerebral intravascular oxygenation correlates with mean arterial pressure in critically ill premature infants", Pediatrics, 106, pp.828~ (2000)
- Wiswell TE, "Effects of hypocarbia on the development of cystic periventricular leukomalacia in premature infants treated with high-frequency jet ventilation", Pediatrics, 98, pp.918~924 (1996)
- Gannon CM, "Volutrauma, PaCO2 levels, and neurodevelopmental sequelae following assisted ventilation", Clin Perinatol, 25, pp.159~175 (1998)
- Graziani LJ, "Mechanical ventilation in preterm infants: neurosonographic and developmental studies", Pediatrics, 90, pp.515~522 (1992)
- Collins MP, "Hypocapnia and other ventilation-related risk factors for cerebral palsy in low birth weight infants", Pediatr Res, 50, pp.712~719 (2001)
- Wallin LA, "Neonatal intracranial hemorrhage: II. Risk factor analysis in an inborn population", Early Hum Dev, 23, pp.129~137 (1990)
- Harper AM, "Autoregulation of cerebral blood flow: influence of the arterial blood pressure on the blood flow through the cerebral cortex", J Neurol Neurosurg Psychiatry, 29, pp.398~403 (1966)
- Haggendal E, "Effects of arterial carbon dioxide tension and oxygen saturation on cerebral blood flow autoregulation in dogs", Acta Physiol Scand Suppl, 258, pp.27~53 (1965)
- Kaiser JR, "The effects of hypercapnia on cerebral autoregulation in ventilated very low birth weight infants", Pediatr Res, 58, pp.931~935 (2005)
- Kenny JD, "Hypercarbia at birth: a possible role in the pathogenesis of intraventricular hemorrhage", Pediatrics, 62, pp.465~467 (1978)
- Cooke RW, "Autoregulation and intraventricular haemorrhage", Lancet, 1, pp.1197~1198 (1980)
- Van de Bor M, "Perinatal factors and periventricular-intraventricular hemorrhage in preterm infants", Am J Dis Child, 140, pp.1125~1130 (1986)
- Erickson SJ, "Hypocarbia in the ventilated preterm infant and its effect on intraventricular haemorrhage and bronchopulmonary dysplasia", J Paediatr Child Health, 38, pp.560~562 (2002)
- Kaiser JR, "Hypercapnia during the first 3 days of life is associated with severe intraventricular hemorrhage in very low birth weight infants", J Perinatol, 26, pp.279~285 (2006)
- Fabres J, "Both extremes of arterial carbon dioxide pressure and the magnitude of fluctuations in arterial carbon dioxide pressure are associated with severe intraventricular hemorrhage in preterm infants", Pediatrics, 119, pp.299~305 (2007)
- Papile LA, "Incidence and evolution of subependymal and intraventricular hemorrhage: a study of infants with birth weights less than 1,500 gm", J Pediatr, 92, pp.529~534 (1978)
- Volpe JJ, "Intracranial hemorrhage: germix matrix-intraventricular hemorrhage. In: Neurology of the newborn. 5th ed", pp.539~541 (2008), WB Saunders
- Wilson DF, "Effect of hyperventilation on oxygenation of the brain cortex of newborn piglets", J Appl Physiol, 70, pp.2691~2696 (1991)
- Wyatt JS, "Response of cerebral blood volume to changes in arterial carbon dioxide tension in preterm and term infants", Pediatr Res, 29, pp.553~557 (1991)
- Perlman JM, "Reduction in intraventricular hemorrhage by elimination of fluctuating cerebral blood-flow velocity in preterm infants with respiratory distress syndrome", N Engl J Med, 312, pp.1353~1357 (1985)
- Lou HC, "Impaired autoregulation of cerebral blood flow in the distressed newborn infant", J Pediatr, 94, pp.118~121 (1979)
- Hauerberg J, "Cerebral blood flow autoregulation after experimental subarachnoid hemorrhage during hyperventilation in rats", J Neurosurg Anesthesiol, 5, pp.258~263 (1993)
- Skouteli HN, "Arterial blood gas derangements associated with death and intracranial hemorrhage in premature babies", J Perinatol, 8, pp.336~341 (1988)
- Linder N, "Risk factors for intraventricular hemorrhage in very low birth weight premature infants: a retrospective case-control study", Pediatrics, 111, pp.590~595 (2003)
- Carlo WA, "Minimal ventilation to prevent bronchopulmonary dysplasia in extremely-low-birth-weight infants", J Pediatr, 141, pp.370~374 (2002)
- Mariani G, "Randomized trial of permissive hypercapnia in preterm infants", Pediatrics, 104, pp.1082~1088 (1999)
- Woodgate PG, "Permissive hypercapnia for the prevention of morbidity and mortality in mechanically ventilated newborn infants", Cochrane Database Syst Rev 2001;(2):CD002 061., ~ (2001)
