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Related Concept Videos

Pulse Oximetry01:24

Pulse Oximetry

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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...
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Guidelines For Measuring Vital Signs01:19

Guidelines For Measuring Vital Signs

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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.
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Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

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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...
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Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

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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...
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Pulse rhythm01:30

Pulse rhythm

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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Measurement of Blood Pressure01:17

Measurement of Blood Pressure

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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...
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Related Experiment Video

Updated: Apr 7, 2026

Standardized Hemorrhagic Shock Induction Guided by Cerebral Oximetry and Extended Hemodynamic Monitoring in Pigs
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Pulse oximetry.

Amal Jubran1,2

  • 1Division of Pulmonary and Critical Care Medicine, Edward Hines Jr. Veterans Affairs Hospital, 111N, 5000 South Fifth Avenue, Hines, IL, 60141, USA. ajubran@lumc.edu.

Critical Care (London, England)
|July 17, 2015
PubMed
Summary
This summary is machine-generated.

This review updates critical care monitoring with advanced pulse oximetry. New multiwavelength devices and signal processing enhance accuracy during motion and low perfusion, improving patient outcomes.

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Area of Science:

  • Critical care medicine
  • Biomedical engineering
  • Clinical monitoring technology

Background:

  • Pulse oximetry is a standard monitoring tool in critical care.
  • A previous review on pulse oximetry was published in 1999.
  • Continuous advancements necessitate updated reviews of pulse oximetry technology and application.

Purpose of the Study:

  • To provide an updated review of pulse oximetry in critical care.
  • To summarize recent developments in pulse oximetry technology.
  • To discuss the impact of pulse oximetry on patient outcomes.

Main Methods:

  • Review of recently developed multiwavelength pulse oximeters.
  • Examination of signal processing techniques for motion artifact and low perfusion.
  • Analysis of reflectance technology in pulse oximetry.
  • Discussion of data on patient outcomes related to pulse oximetry.

Main Results:

  • New multiwavelength pulse oximeters show improved ability to detect dyshemoglobins.
  • Advanced signal processing and reflectance technology enhance performance during motion artifact and low perfusion.
  • Data on the effect of pulse oximetry on patient outcomes are presented.

Conclusions:

  • Recent technological advancements have significantly improved pulse oximetry performance.
  • Enhanced pulse oximetry offers better monitoring in challenging critical care conditions.
  • Further research and application of these advancements are crucial for optimizing patient care.