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Related Concept Videos

Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

1.1K
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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Pulse Oximetry01:24

Pulse Oximetry

1.6K
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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Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen01:16

Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen

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Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
3.2K
Guidelines For Measuring Vital Signs01:19

Guidelines For Measuring Vital Signs

3.2K
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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Hypoxia01:23

Hypoxia

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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...
2.5K
Oxygen Delivering System I: Nasal Cannula and Face Mask01:26

Oxygen Delivering System I: Nasal Cannula and Face Mask

2.3K
The human body requires oxygen to function, and when the natural process of respiration is hindered, external devices, including the following, are needed to help deliver this vital gas.
Nasal Cannula
A nasal cannula is a lightweight tube split at one end into two prongs and placed in the nostrils. It is typically used to deliver low to medium levels of oxygen.
Suggested flow rate: The suggested flow rate for a nasal cannula typically ranges between 1 and 6 L/min.
Oxygen percentage setting:...
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Related Experiment Video

Updated: Mar 26, 2026

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
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A Lab Assembled Microcontroller-Based Sensor Module for Continuous Oxygen Measurement in Portable Hypoxia Chambers.

Saroj P Mathupala1, Sam Kiousis1, Nicholas J Szerlip2

  • 1Department of Neurosurgery and Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, United States of America.

Plos One
|February 11, 2016
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Summary

Researchers can now monitor oxygen levels in hypoxia chambers with a low-cost, Arduino-based sensor kit. This essential tool ensures stable experimental conditions, improving the reliability of in vitro cancer research data.

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Area of Science:

  • Biotechnology
  • Cancer Research
  • Cell Biology

Background:

  • Hypoxia chambers are crucial for in vitro cancer research, but lack oxygen monitoring.
  • Current methods assume stable oxygen levels, leading to inconsistent experimental data.
  • Portable hypoxia chambers lack integrated sensors, compromising data uniformity.

Purpose of the Study:

  • To design and construct a low-cost, microcontroller-based kit for continuous oxygen measurement in hypoxia chambers.
  • To provide researchers with a tool for real-time monitoring and recording of oxygen concentration.
  • To enhance the reliability and reproducibility of hypoxia-based cell culture experiments.

Main Methods:

  • Utilized an Arduino-based microcontroller and a miniature oxygen sensor for O2 measurement.
  • Developed user-friendly software for data input, output, and parameter control.
  • Assembled a compact, affordable (US$135) system for easy integration into existing hypoxia chambers.

Main Results:

  • Demonstrated the kit's utility and data stability through multiple hypoxia experiments.
  • Confirmed the critical need for monitoring oxygen levels to prevent experimental errors.
  • The developed kit provides essential oxygen monitoring capabilities previously limited to expensive incubators.

Conclusions:

  • The low-cost sensor kit enables continuous oxygen monitoring in portable hypoxia chambers.
  • Accurate monitoring prevents experimental failure due to fluctuating oxygen levels.
  • This accessible technology improves the quality of in vitro cancer research data.