目的探讨经连续性肾脏替代治疗(CRRT)实施治疗性亚低温的效果,以及初步观察其改善心搏骤停患者神经功能预后的临床疗效。
方法前瞻性、多中心、随机对照研究。连续选取2021年5月1日至2023年8月31日在宁波市内三家综合性医院包括宁海县第一医院、象山县第一人民医院和鄞州区第二医院实施心肺复苏后恢复自主循环的心搏骤停患者共36例,其中男性28例(77.8%)。按随机数字表法分为体表低温组19例和CRRT低温组17例。两组患者在应用常规治疗的基础上,分别应用控温毯仪和CRRT机实施治疗性亚低温,目标体温设置为33℃,达标后维持33℃±0.5℃的温度至少24 h,再以0.25~0.5 ℃/h速率复温至37℃±0.5℃的正常体温并维持该温度。治疗前,记录患者的一般情况。治疗性亚低温实施期间,记录患者低温诱导期、低温维持期和复温期的数据资料。治疗后1和2 w时,应用格拉斯哥昏迷评分(GCS)和脑功能表现分级(CPC)评估患者的神经功能状态。
结果治疗前,两组患者的性别、年龄、心搏骤停原因和时间、心肺复苏时长、急性生理学和慢性健康状况评价Ⅱ(APACHEⅡ)和序贯器官衰竭评估(SOFA)评分等比较,差异均无统计学意义(均为 P>0.05)。治疗性亚低温实施期间,CRRT低温组患者的低温启动时机慢于体表低温组,但差异无统计学意义[(27.6±9.2)min比(23.8±9.9)min, t=-1.203, P=0.237];CRRT低温组患者的降温速率显著快于体表低温组[(3.65±1.28)℃/h比(2.04±0.22)℃/h, t=-5.419, P<0.001],且达标时长显著短于体表低温组[(1.36±0.49)h比(2.38±0.83)h, t=4.427, P<0.001],差异均有统计学意义;两组患者的亚低温维持范围和时长、复温速率和时长基本一致,差异均无统计学意义(均为 P>0.05)。治疗后1和2 w时,CRRT低温组患者的GCS评分显著高于体表低温组[1 w:(8.12±4.69)分比(5.11±3.81)分, t=-2.124;2 w:(10.24±5.55)分比(6.47±4.97)分, t=-2.145],且CPC评分显著低于体表低温组[1 w:(2.65±1.27)分比(3.68±1.16)分, t=2.562;2 w:(2.24±1.39)分比(3.53±1.39)分, t=2.780],差异均有统计学意义(均为 P<0.05)。
结论在心搏骤停患者恢复自主循环后,应用CRRT能较传统方法更快地诱导治疗性亚低温,且同等有效地维持低温与复温,并更为显著地改善患者的神经功能预后结局。
ObjectiveTo explore the efficacy of therapeutic mild hypothermia induced by continuous renal replacement therapy (CRRT) and its preliminary effectiveness in improving neurological outcomes in patients with cardiac arrest.
MethodsThis was a prospective, multicenter, randomized controlled study. A total of 36 patients (28 males, 77.8%) with cardiac arrest who obtained spontaneous circulation after cardiopulmonary resuscitation in three general hospitals in Ningbo, including the First Hospital of Ninghai, the First People's Hospital of Xiangshan, and Yinzhou No.2 Hospital, were continuously selected from May 1, 2021 to August 31, 2023. The patients were randomly assigned to either the surface cooling group ( n=19) or the CRRT cooling group ( n=17) using a random number table. On the basis of conventional treatment, the two groups received therapeutic mild hypothermia using surface blanket or CRRT machine, respectively. The target body temperature was set at 33℃, and once achieved, it was maintained at 33℃±0.5℃ for at least 24 hours. Afterward, the body temperature was gradually rewarmed to 37℃±0.5℃ at a rate of 0.25–0.5 ℃/h and maintained at this normal temperature. Before treatment, the patient's general condition was recorded. During the implementation of therapeutic mild hypothermia, the data of patients' hypothermia induction, maintenance, and rewarming were recorded. The Glasgow coma score (GCS) and cerebral performance category (CPC) were used to assess the patients' neurological status at 1 and 2 weeks after treatment.
ResultsBefore treatment, there were no significant differences in gender, age, cause and duration of cardiac arrest, duration of cardiopulmonary resuscitation, scores of acute physiology and chronic health evaluation Ⅱ (APACHEⅡ) and sequential organ failure assessment (SOFA) between the two groups (all P>0.05). During the implementation of therapeutic mild hypothermia, the timing of hypothermia initiation in the CRRT cooling group was slower than that in the surface cooling group, but the difference was not statistically significant (27.6±9.2 min vs. 23.8±9.9 min, t=-1.203, P=0.237). The cooling rate of patients in the CRRT cooling group was significantly faster than that in the surface cooling group (3.65±1.28 ℃/h vs. 2.04±0.22 ℃/h, t=-5.419, P<0.001), and the time to reach the target temperature was significantly shorter than that in the surface cooling group (1.36±0.49 h vs. 2.38±0.83 h, t=4.427, P<0.001). The range and duration of maintenance of mild hypothermia, and the rate and duration of rewarming in the two groups were almost the same, with no statistical significance (all P>0.05). At 1 and 2 weeks after treatment, the GCS score in the CRRT cooling group was significantly higher than that in the surface cooling group (1 week: 8.12±4.69 score vs. 5.11±3.81 score, t=-2.124; 2 weeks: 10.24±5.55 score vs. 6.47±4.97 score, t=-2.145; both P<0.05), and its CPC score was significantly lower than that in the surface cooling group (1 week: 2.65±1.27 score vs. 3.68±1.16 score, t=2.562; 2 weeks: 2.24±1.39 score vs. 3.53±1.39 score, t=2.780; both P<0.05).
ConclusionsAfter the restoration of spontaneous circulation in patients with cardiac arrest, CRRT can induce therapeutic mild hypothermia more rapidly, maintain hypothermia and then rewarm equally effectively, and result in a significantly greater improvement in neurological outcomes.
徐康敏,陈启江,葛子盛,等. 经连续性肾脏替代治疗实施亚低温的效果及其改善心搏骤停患者神经功能预后的初步疗效观察[J]. 中国心血管杂志,2025,30(01):69-74.
DOI:10.3969/j.issn.1007-5410.2025.01.012除非特别声明,本刊刊出的所有文章不代表本刊编辑委员会的观点。
项目 | 体表低温组(19例) | CRRT低温组(17例) | t/ χ 2值 | P值 |
---|---|---|---|---|
男性[例(%)] | 16(84.2) | 12(70.6) | 0.963 | 0.326 |
年龄(
|
59.8±16.6 | 53.5±13.9 | 1.217 | 0.232 |
心搏骤停原因[例(%)] | 0.037 | 0.847 | ||
心原性 | 5(26.3) | 4(23.5) | ||
非心原性 | 14(73.7) | 13(76.5) | ||
心搏骤停时间(
|
8.1±3.7 | 7.5±3.4 | 0.490 | 0.628 |
心肺复苏时长(
|
22.6±11.9 | 20.2±9.8 | 0.654 | 0.518 |
APACHEⅡ评分(
|
25.4±5.7 | 27.2±7.4 | -0.800 | 0.429 |
SOFA评分(
|
8.5±2.7 | 9.2±3.6 | -0.678 | 0.503 |
注:CRRT,连续性肾脏替代治疗;APACHEⅡ,急性生理学和慢性健康状况评价Ⅱ;SOFA,序贯器官衰竭评估
项目 | 体表低温组(19例) | CRRT低温组(17例) | t值 | P值 |
---|---|---|---|---|
低温启动时机(min) | 23.8±9.9 | 27.6±9.2 | -1.203 | 0.237 |
低温诱导期 | ||||
降温速率(℃/h) | 2.04±0.22 | 3.65±1.28 | -5.419 | <0.001 |
达标时长(h) | 2.38±0.83 | 1.36±0.49 | 4.427 | <0.001 |
低温维持期 | ||||
维持温度(℃) | 33.4±0.4 | 33.4±0.2 | 0.169 | 0.867 |
维持时长(h) | 54.5±6.5 | 57.2±6.7 | -1.236 | 0.225 |
复温期 | ||||
复温速率(℃/h) | 0.50±0.14 | 0.52±0.10 | -0.455 | 0.652 |
达标时长(h) | 6.62±1.53 | 6.37±1.57 | 0.479 | 0.635 |
注:CRRT,连续性肾脏替代治疗
项目 | 体表低温组(19例) | CRRT低温组(17例) | t值 | P值 |
---|---|---|---|---|
GCS评分 | ||||
治疗前 | 3.47±0.96 | 3.76±1.15 | -0.827 | 0.414 |
治疗后1 w | 5.11±3.81 | 8.12±4.69 | -2.124 | 0.041 |
治疗后2 w | 6.47±4.97 | 10.24±5.55 | -2.145 | 0.039 |
CPC评分 | ||||
治疗前 | 3.95±0.23 | 3.88±0.49 | 0.523 | 0.604 |
治疗后1 w | 3.68±1.16 | 2.65±1.27 | 2.562 | 0.015 |
治疗后2 w | 3.53±1.39 | 2.24±1.39 | 2.780 | 0.009 |
注:CRRT,连续性肾脏替代治疗;GCS,格拉斯哥昏迷评分;CPC,脑功能表现分级

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