在重复的听诊血压测量中变化的决定因素
Shingo Yamashita1,2, Kei Asayama3, Nobuki Yakura2
1Cooperative Major in Advanced Biomedical Sciences, Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku.
Blood pressure monitoring
|February 11, 2026
概括
即使在国际标准下,听术血压测量的变化也很大. 确定方法,而不是观察者或参与者,是这种变化的主要来源,影响准确性.
科学领域:
- 心血管研究的心血管研究.
- 医疗器械验证 医疗器械验证
- 临床测量科学 临床测量科学
背景情况:
- 听力测试是验证自动血压计的黄金标准.
- 听证测量的固有变异性可能会降低验证研究的可靠性.
- 量化这种变化对于准确的血压评估至关重要.
研究的目的:
- 为了量化重复监听血压测量的变异性.
- 确定方法,观察者和参与者对这种变化的比例贡献.
主要方法:
- 根据ISO 81060-2:2018+Amd 1:2020的准确性验证研究 (n=85) 的数据分析.
- 两名训练有素的观察员同时进行了听觉测量.
- 使用"测量不确定性表达指南"框架来分解总变化.
主要成果:
- 重复的听力测量显示出变异性 (SD:4.91 mmHg静缩,3.26 mmHg静缩).
- 血压测定方法是变化最大的贡献者 (心压:47.4%,心压:46.0%).
- 观察者和参与者因素的贡献不那么显著 (例如,观察者:缩5.3%,透缩16.4%).
结论:
- 即使在标准化条件下,听诊血压测量也存在显著的变化.
- 确定方法是这种固有变化的主要来源.
- 这种变化是临床和研究环境中准确识别血压的限制因素.
相关概念视频
01:17Measurement of Blood Pressure
3.2K
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...
3.2K
01:30Equipments Used To Measure Blood Pressure
3.7K
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...
3.7K
01:28Special considerations while measuring blood pressure
1.3K
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
1.3K
01:02Fluid Pressure over Flat Plate of Variable Width
2.1K
When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
2.1K
01:24Blood Pressure
10.3K
The movement of blood in a human body, commonly referred to as blood flow, is determined by the volume of blood that traverses a certain section of the bodily system per unit time. It is the rhythmic contraction of the heart's ventricles that primarily instigates this movement. As the ventricles contract, blood is forced into the prominent arteries, which then flow from areas of greater pressure to lower pressure areas. This movement continues into smaller arteries and arterioles and...
10.3K
01:30Blood Pressure
4.9K
Blood pressure (BP) is the pressure or force of blood exerted on the artery's walls as it circulates through the body. It is essential for maintaining blood flow throughout the body.
The average BP in an adult is typically around 120/80 mmHg (millimeters of mercury). In this measurement, the numerator (120) indicates the systolic pressure, which is the pressure in the arteries during the contraction of the heart's ventricles as blood is expelled. The denominator (80) represents the...
The average BP in an adult is typically around 120/80 mmHg (millimeters of mercury). In this measurement, the numerator (120) indicates the systolic pressure, which is the pressure in the arteries during the contraction of the heart's ventricles as blood is expelled. The denominator (80) represents the...
4.9K