脉冲氧计信号衍生的外周 perfusion 索引:一个单一中心的探索性研究
Ryosuke Shintani1, Motohiro Sekino1, Shuntaro Sato2
1Department of Anesthesiology and Intensive Care Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, JPN.
Cureus
|May 13, 2025
概括
对重症患者来说,对外周 perfusion index (PPI) 的监测至关重要. 指针和戒指显示PPI值的变化最小,在切换探头位置时提高监测可靠性.
科学领域:
- 关键护理医学 关键护理医学
- 生理学 生理学 生理学
- 医疗器械 医疗器械
背景情况:
- 对于重症患者来说,对外周 perfusion 监测是必不可少的,因为 perfusion 不良表明预后更差.
- 通过脉冲氧量计测量的外周 perfusion 指数 (PPI) 量化了 perfusion,但在不同手指之间有所不同.
- 建议改变探头位置以防止烧伤,但指际PPI变异降低了可靠性.
研究的目的:
- 为了评估外周 perfusion 指数 (PPI) 测量指数的指际差异.
- 为了确定PPI波动最小的手指对,以便进行一致的监测.
- 提高脉冲氧计在临床和研究环境中的可靠性.
主要方法:
- 一项前性研究测量了30名健康志愿者的所有五根手指的脉冲幅度指数 (PAI).
- 在三个室温 (16°C,22°C,28°C) 上进行了测量,以捕获不同的PAI值.
- 使用邦费罗尼校正对对的t测试分析了10对手指,p < 0.005被认为是显著的.
主要成果:
- 指针和指环的组合表现出最少的PAI差异 (0.07%±1.89%,p = 0.74).
- 中环 (0.45% ± 1.93%,p = 0.03) 和中指指 (0.52% ± 2.05%,p = 0.02) 的手指对也显示出极小的差异.
- 所有其他手指组合都显示出统计学上显著的跨指差异 (p < 0.001).
结论:
- 在指指和戒指之间观察到PPI值的最小指际差异.
- 在食指和戒指之间交替放置探头,可以实现一致的PPI测量.
- 这一发现可以提高临床实践和研究中外周 perfusion 监测的可靠性.
相关概念视频
Pulse Oximetry
291
Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
291
Guidelines For Measuring Vital Signs
1.5K
Following these guidelines can help nurses accurately measure vital signs, assess changes in patient conditions, and provide timely treatment when necessary. Adhering closely to the guidelines ensures the accuracy and reliability of the results.
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
1.5K
Assessment of Diffusion and Perfusion
740
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
740
Pulse
397
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
The pulse serves as a clinical...
397
Pulse Assessment Sites
855
Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
855
Special considerations while measuring pulse
546
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
546


