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Related Concept Videos

Guidelines For Measuring Vital Signs01:19

Guidelines For Measuring Vital Signs

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.
Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

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 principle...
Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

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 important. 
Pulse Oximetry01:24

Pulse Oximetry

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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Related Experiment Video

Updated: Jun 8, 2026

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
11:35

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function

Published on: December 9, 2010

Gastric tonometry: evaluating tissue oxygenation

A Ferguson1

  • 1ICU Manly Hospital, Sydney, New South Wales, Australia.

Critical Care Nurse
|December 1, 1996
PubMed
Summary
This summary is machine-generated.

Gastric tonometry offers a cost-effective method for monitoring gut mucosal oxygenation in critically ill patients. This technique enables early detection of compensated shock, allowing for timely interventions to improve patient outcomes.

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Tumor Hypoxia Assessment: In Vivo 3D Oxygen Imaging Through Electron Paramagnetic Resonance
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Last Updated: Jun 8, 2026

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
11:35

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Published on: December 9, 2010

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
14:28

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care

Published on: May 10, 2024

Tumor Hypoxia Assessment: In Vivo 3D Oxygen Imaging Through Electron Paramagnetic Resonance
07:07

Tumor Hypoxia Assessment: In Vivo 3D Oxygen Imaging Through Electron Paramagnetic Resonance

Published on: February 14, 2025

Area of Science:

  • Critical care medicine
  • Gastroenterology
  • Physiology

Background:

  • Critically ill patients need close monitoring of tissue oxygenation, especially in the gut mucosa due to its vulnerability.
  • Splanchnic hypoperfusion can indicate serious patient compromise.

Purpose of the Study:

  • To evaluate gastric tonometry as a method for assessing splanchnic tissue oxygenation.
  • To determine if gastric tonometry can detect early signs of shock.

Main Methods:

  • Gastric tonometry was employed, requiring a gastric tonometer and arterial blood gas analysis.
  • Gastric intramucosal pH (pHi) was determined.

Main Results:

  • Gastric tonometry provides a minimally invasive and cost-effective way to measure splanchnic tissue oxygenation.
  • The method allows for the detection of covert compensated shock through pHi measurement.

Conclusions:

  • Gastric tonometry is a valuable tool for monitoring critically ill patients.
  • Early detection of tissue oxygenation deficits via pHi can lead to timely interventions and potentially improved patient outcomes.