种族对最大脉冲氧计的影响:低 perfusion 指数的影响
Vikrant Sharma1, Steven J Barker2, Rebecca Sorci3
1Vice President, Optical Sciences, Masimo Corp, Irvine, CA, USA.
Journal of clinical monitoring and computing
|January 18, 2024
概括
脉冲氧计的精度在不同种族和 perfusion 条件下保持不变. 配备RD SET®传感器的Masimo SET®设备显示出可靠的SpO2-SaO2测量,即使是具有较低的外周 perfusion (Pi).
科学领域:
- 生物医学工程 生物医学工程
- 医疗器械 医疗器械
- 生理监测 生理监测
背景情况:
- 脉冲氧计对于监测氧和 (SpO2) 是至关重要的.
- 输液指数 (Pi) 可以影响脉冲氧计的准确性.
- 已经报告了脉冲氧计读数的种族差异.
研究的目的:
- 为了评估黑人和白人的SpO2-SaO2差异.
- 为了比较正常和低的外周 perfusion 指数 (Pi) 条件之间的准确性.
主要方法:
- 分析了来自75名受试者 (39名黑人,36名白人) 的7183个配对的SpO2-SaO2样本.
- 分类数据为低 (Pi ≤ 1) 和正常 (Pi > 1) 输液组.
- 计算偏差,精度和准确性 (A_RMS) 对于每个组和种族.
主要成果:
- 在正常输液下,偏差和精度总体为+0.18%±1.34%.
- 在低 perfusion 的情况下,偏差和精度总体为 +0.48% ± 1.59%.
- 精度 (A_RMS) 为正常输液1.37%,低输液1.64%,符合FDA标准.
结论:
- 配有RD SET®传感器的Masimo SET®脉冲氧计在黑人和白人个体中都非常准确.
- 在正常和低外周 perfusion (Pi) 条件下保持精度.
- 健康志愿者的结果表明可靠的表现,尽管临床条件可能有所不同.
相关概念视频
Pulse Oximetry
329
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...
329
Assessment of Diffusion and Perfusion
983
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...
983
Guidelines For Measuring Vital Signs
1.6K
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.
1.6K
Special considerations while measuring oxygen saturation
592
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
592
Hypoxia
1.1K
Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
1.1K
Oxygen Transport in the Blood
2.7K
Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
2.7K


