自主回归与外源输入 (ARX) 决策支持在脊髓麻醉下剖腹产期间维持血压:一项前性试点研究与匹配的非并发控制
medRxiv : the preprint server for health sciences
|February 12, 2026
概括
一个带有外源输入 (ARX) 的自回归算法准确地预测了剖腹产期间母亲的平均动脉压 (MAP). 以ARX为指导的治疗减少了低血压的持续时间,但增加了烯剂量,支持了进一步的随机试验.
科学领域:
- 麻醉学 麻醉学
- 孕产妇和胎儿医学 孕产妇和胎儿医学
- 医疗信息学 医疗信息学
背景情况:
- 剖腹产时的脊髓麻醉经常导致母亲的低血压.
- 低血压可能会影响子宫胎盘输液和母亲的舒适度.
- 目前的血管压缩剂管理通常是反应性的,尽管指南建议采取主动策略.
研究的目的:
- 评估一个自回归与外源输入 (ARX) 决策支持算法,用于实时预测母亲的平均动脉压 (MAP).
- 评估算法在脊髓麻醉下剖腹产期间支持血管压力控制的能力.
- 为了确定ARX指导护理是否影响低血压持续时间,血管压缩剂的使用,以及孕产妇/新生儿的结果.
主要方法:
- 一项前性试点研究,涉及20名在脊髓麻醉下进行剖腹产的孕妇患者.
- 患者接受了标准护理,并补充了ARX生成的MAP预测在1,2和3分钟的时间范围内.
- 以ARX为指导的患者与非并发对照 (1:2匹配) (n=40) 进行比较.
主要成果:
- 一分钟前的ARX预测显示了准确性 (RMSE 3.71 mmHg,MAE 2.75 mmHg).
- 在ARX指导的患者中,低血压持续时间较短 (0.8比3.0分钟;P=.005) 和发病率较低 (25.0%比52.5%;P=.033).
- 以ARX为指导的护理与更高的烯剂量 (1823比974微克;P=.001) 和较低的孕产妇恶心 (5%比35%;P=.014) 相关.
结论:
- 一个ARX决策支持算法在剖腹产脊髓麻醉期间展示了准确的实时MAP预测.
- 以ARX为指导的管理与降低低血压持续时间和发生率有关.
- 这些初步发现支持在更大的随机试验中进一步调查,以确认临床益处.
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