预测下降:机器学习在预测手术内低血压方面的作用,范围审查
Angelina Koh1, Dhanya Baby2, Walston Martis3,4,5
1The Royal Melbourne Hospital, Melbourne, Australia - angelina.koh@mh.org.au.
Minerva anestesiologica
|July 30, 2025
概括
机器学习可以准确预测手术内低血压,但它对患者结果的影响需要进一步研究. 早期发现可能会改善临床管理,减少并发症.
科学领域:
- 麻醉学和重症监护医学
- 医疗保健中的人工智能
- 预测临床结果的预测
背景情况:
- 术内低血压会增加死亡,心肌损伤,急性损伤和中风的风险.
- 机器学习模型为低血压的预防性管理提供了早期识别.
- 本研究评估了ML模型在预测低血压及其临床影响方面的准确性.
研究的目的:
- 评估机器学习算法在预测手术内低血压方面的准确性.
- 为了确定ML预测的低血压对患者临床结果的影响.
- 审查当前关于ML应用在手术内低血压的文献.
主要方法:
- 对Medline,Embase,PubMed和Cochrane数据库进行范围审查.
- 包括使用ML预测成年外科手术患者手术内低血压的研究.
- 提取了ML模型类型,准确性,手术类型,低血压发生率和患者结局的数据.
主要成果:
- 分析了26项研究 (48707名患者);92.3%的非心脏手术.
- 低血压预测指数 (HPI) 是最准确的 (AUC 0.912),预测高达15分钟之前.
- ML显示了血管压缩剂/液体使用的显著差异;两项研究减少了LOS和并发症.
结论:
- ML算法准确地预测了手术期间的低血压.
- 临床含义和对患者结果的影响需要进一步调查.
- 研究强调了算法准确性,而不是临床结果研究.
相关概念视频
Equipments Used To Measure Blood Pressure
Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Errors occurring during blood pressure monitoring
Blood pressure monitoring is a crucial clinical procedure in diagnosing and managing various cardiovascular conditions. Despite its significance, the accuracy of blood pressure measurements can be compromised by multiple factors, potentially leading to either falsely high or low readings. These inaccuracies are critical as they can significantly impact patient care. So, it is vital to understand these challenges deeply and adopt strategic approaches to minimize errors.
Several factors...
Several factors...
Assessment of blood pressure in brachial artery(one-step method)
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
Prepare for the Procedure:
Assessing Blood pressure using a doppler ultrasound
To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Pre-Procedural Guidelines for Assessing Blood Pressure
Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the patient.
Measurement of Blood Pressure
Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.


