ObjectiveTo explore the risk factors and countermeasures of the perfusionist-related near-miss event (NME) in cardiopulmonary bypass (CPB). MethodsThe clinical data of the patients who underwent cardiac surgery in the Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University from March 2020 to July 2021 were retrospectively analyzed. According to whether NME occurred during the operation, the patients were divided into an NME group and a non-NME group. The clinical data of the two groups were compared, and the risk factors for NME were analyzed. ResultsA total of 702 patients were enrolled, including 424 males and 278 females with a median age of 56.0 years. There were 125 patients in the NME group and 577 patients in the non-NME group. The occurrence rate of NME was 17.81%. Univariate analysis showed that there were statistical differences between the two groups in the gender, body surface area, CPB time, European system for cardiac operative risk evaluation score, emergency surgery, type of surgery, night CPB initiation, modified ultrafiltration use, multi-device control, average operation time, et al. (all P<0.05). The above variables were dimensionality reduction processed by least absolute shrinkage and selection operator regression, and the λ of minimum mean square error of 10-fold cross validation was 0.014. The variables of the corresponding model were selected as follows: multi-device control, night CPB initiation, minimum hematocrit, modified ultrafiltration use, CPB time. The results of multivariate logistic regression showed that night CPB initiation [OR=9.658, 95%CI (4.735. 19.701), P<0.01] and CPB time [OR=1.003, 95%CI (1.001, 1.006), P=0.014] were independent risk factors for NME. ConclusionNight CPB initiation and CPB time are independent risk factors for NME during CPB, which should be recognized and early warned in clinical work.
目的探讨成人法洛四联症（tetralogy of fallot，TOf）的体外循环（cardiaopulmonary bypass，CPB）管理策略。 方法回顾性分析2008年1月至2012年12月广东省人民医院收治TOf患者112例的临床资料，其中男51例、女61例，年龄17～49（26.8±11.3）岁。2例行右心室流出道疏通术，余为TOf根治术。CPB降温至中度或深度低温、采用中至低流量灌注。通过CPB开始时放自体血、加大预充液量等调整CPB中红细胞压积（HCT）维持在0.25至术前水平的1/2，持续给予6-氨基己酸、超滤、使用血液回收机等综合措施进行血液保护。心肌保护采用冷高钾含血或晶体心脏停搏液间断灌注，同时运用开放前温血灌注、术野充弥CO2辅助心腔排气等措施提高心肌保护效果。调控CPB中血氧分压，以术前氧分压水平开始CPB、逐渐增加到150 mm Hg左右，并维持至CPB血流复温再进一步升高，以减少全身各组织器官的再氧合损伤。 结果CPB时间60～272（127.5±31.5）min，主动脉阻断时间22～146（78.3±20.4）min，住ICU时间19～1 465（96.9±19.0）h，住院时间12～84（26.2±1.4）d。二次开胸止血12例，胸腔积液9例，急性肾功衰竭2例，乳糜胸2例；死亡4例，其中术后重度低心排血量综合征3例、多器官功能衰竭1例，住院死亡率3.6%。 结论成人TOf的CPB需要特别关注血液保护、心肌保护及减少再氧合损伤，以降低并发症、提高手术效果。