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Related Concept Videos

Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

696
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...
696
Oxygen Requirements and Growth Patterns01:29

Oxygen Requirements and Growth Patterns

231
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
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Pulse Oximetry01:24

Pulse Oximetry

403
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...
403
Guidelines For Measuring Vital Signs01:19

Guidelines For Measuring Vital Signs

1.9K
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.
1.9K
Oxygen Transport in the Blood01:27

Oxygen Transport in the Blood

3.2K
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,...
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Microbial Growth Measurement: Direct Methods01:23

Microbial Growth Measurement: Direct Methods

264
Direct methods for measuring microbial populations in a culture are essential tools in microbiology, providing quantitative data for various applications. Among these, microscopic counts, plate counts, and serial dilution are widely used techniques, each with unique principles and applications.Microscopic CountsMicroscopic counting involves the use of a Petroff-Hausser chamber, a specialized microscope slide with a grid and defined depth. By observing a liquid culture under a microscope,...
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Related Experiment Video

Updated: Sep 8, 2025

Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level
11:49

Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level

Published on: November 17, 2013

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Oxygen Measurement in Microdevices.

Samantha M Grist1, Kevin L Bennewith2, Karen C Cheung1,3

  • 1School of Biomedical Engineering, Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada;

Annual Review of Analytical Chemistry (Palo Alto, Calif.)
|June 13, 2022
PubMed
Summary
This summary is machine-generated.

Accurate oxygen measurement is crucial for various fields. This review highlights microdevice sensor needs and applications, advancing real-time monitoring in research and industry.

Keywords:
hypoxiamicrofluidicsmultianalyte measurementsoptical oxygen sensororgan-on-chipoxygen microscopy

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Last Updated: Sep 8, 2025

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Area of Science:

  • Biomedical Engineering
  • Environmental Science
  • Materials Science

Background:

  • Oxygen is vital for respiration and metabolism, necessitating precise quantification in diverse settings.
  • Microdevices offer real-time monitoring of dynamic, oxygen-dependent biological and chemical processes.

Purpose of the Study:

  • To review key requirements for oxygen sensors in microdevices.
  • To explore recent applications and future trends in microscale oxygen sensing.

Main Methods:

  • Overview of biological oxygen readouts and sensor types.
  • Discussion of sensing mechanisms and implementation in microscale devices.
  • Presentation of recent applications in organs-on-chip, bioprocesses, and pharmaceuticals.

Main Results:

  • Identified critical needs: integrability, dynamic range, sensitivity, spatial resolution, and multimodal compatibility.
  • Highlighted advancements in oxygen microscopy and bioprocess monitoring.
  • Showcased applications in in vitro models and pharmaceutical development.

Conclusions:

  • Intelligent microdevice-sensor systems, including oxygen sensors, will significantly impact environmental science, manufacturing, and medicine.
  • Advancements in multiplexed sensors and integration with industry workflows are key for future progress.