目的 探讨容量保证的高频振荡通气（volume-guaranteed high-frequency oscillatory ventilation，HFOV-VG）对呼吸窘迫综合征（respiratory distress syndrome, RDS）早产儿的治疗效果及对大脑中动脉血流的影响。 方法 前瞻性选取2020年3月—2023年12月于秦皇岛市妇幼保健院新生儿科收治的RDS早产儿120例为研究对象。依据通气模式不同分为常频机械通气（conventional mechanical ventilation, CMV）组（60例）和HFOV-VG组（60例），比较2组基线资料、MCA脑血流动力学参数、并发症及转归情况。 结果 与CMV组比较，HFOV-VG组的机械通气时长、住院时长缩短，总有效率升高（P<0.05）。HFOV-VG组收缩期峰值流速、舒张末期流速和平均流速均优于CMV组（P<0.05）。与CMV组比较，HFOV-VG组早产儿的28 d病死率、支气管肺发育不良发生率和脑室内出血发生率均降低（P<0.05）。 结论 HFOV-VG可有效改善脑血流灌注和降低脑血管阻力，缩短机械通气时长、住院时长，提升总体疗效，HFOV-VG在降低RDS早产儿28 d内死亡风险、支气管肺发育不良和脑室内出血发生风险方面均有显著优势。
Abstract
Objective To investigate the efficacy of volume-guaranteed high-frequency oscillatory ventilation (HFOV-VG) in preterm infants with respiratory distress syndrome (RDS) and its impact on blood flow in the middle cerebral artery (MCA). Methods A prospective study was conducted on 120 preterm infants with RDS who were admitted to the Department of Neonatology at Qinhuangdao Maternal and Child Health Hospital from March 2020 to December 2023. According to the mode of ventilation, the infants were divided into two groups: a conventional mechanical ventilation (CMV) group (60 infants) and an HFOV-VG group (60 infants). The two groups were compared in terms of baseline data, MCA hemodynamic parameters, complications, and outcomes. Results Compared with the CMV group, the HFOV-VG group had significantly shorter durations of mechanical ventilation and hospital stay and a significantly higher overall response rate (P<0.05). The HFOV-VG group demonstrated significantly better peak systolic velocity, end-diastolic velocity, and mean flow velocity (P<0.05). The HFOV-VG group also exhibited significantly lower 28-day mortality rates and lower incidence rates of bronchopulmonary dysplasia and intraventricular hemorrhage than the CMV group (P<0.05). Conclusions HFOV-VG can effectively improve cerebral blood perfusion, reduce cerebrovascular resistance, shorten the durations of mechanical ventilation and hospital stay, and enhance overall treatment efficacy. It has significant advantages in reducing the risk of 28-day mortality, bronchopulmonary dysplasia, and intraventricular hemorrhage in preterm infants with RDS.
关键词
呼吸窘迫综合征 /
容量保证的高频振荡通气 /
脑血流 /
疗效 /
早产儿
Key words
Respiratory distress syndrome /
Volume-guaranteed high-frequency oscillatory ventilation /
Cerebral blood flow /
Efficacy /
Preterm infant
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参考文献
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