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Related Concept Videos

Hypoxia01:23

Hypoxia

1.0K
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...
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Physiological Control of Respiration01:23

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Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
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Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure01:16

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Oxygen therapy has emerged as a significant tool in enhancing the quality of life for patients suffering from pulmonary arterial hypertension (PAH). While this therapy has principally been studied on patients with significant hypoxemia, this therapeutic approach helps prevent potential organ damage and can be administered in the comfort of one's home.
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue,...
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Respiratory Assessment: Purpose and Indications01:19

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Respiratory assessment is a cornerstone of nursing assessments, crucial for the early detection of patient deterioration. This evaluation transcends routine procedures, representing a critical skill nurses must master to ensure optimal patient care.
Objectives and Importance:
The primary goal of respiratory assessment is to evaluate patients at early risk of clinical deterioration. Since respiratory distress often precedes other signs of declining health, breathing patterns and sounds become a...
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Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

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Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
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Oxygen Transport in the Blood01:27

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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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Updated: Jun 28, 2025

A Model to Simulate Clinically Relevant Hypoxia in Humans
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A Model to Simulate Clinically Relevant Hypoxia in Humans

Published on: December 22, 2016

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Hypoxia research, where to now?

Brian M Ortmann1, Cormac T Taylor2, Sonia Rocha3

  • 1Wolfson Childhood Cancer Research Centre, Newcastle University, Newcastle upon Tyne, UK.

Trends in Biochemical Sciences
|April 10, 2024
PubMed
Summary

Understanding how cells sense oxygen is key to physiology and pathology. Future research should focus on hypoxia-inducible factors (HIFs), oxygen-sensing enzymes, and new detection tools to advance hypoxia knowledge.

Keywords:
2-OGDDsHIFchromatinimagingoxygenproteomicssequencing

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Area of Science:

  • Cellular biology
  • Physiology
  • Pathology

Background:

  • Cellular oxygen sensing is crucial for understanding physiological and pathological processes.
  • The discovery of hypoxia-inducible factor (HIF) and prolyl hydroxylases (PHDs) significantly advanced the field.
  • Expanding research has introduced new complexities in oxygen sensing mechanisms.

Purpose of the Study:

  • To highlight key areas for future research in cellular oxygen sensing.
  • To address complexities arising from the expansion of hypoxia research.
  • To guide the research community toward answering fundamental questions in hypoxia.

Main Methods:

  • Review and synthesis of current research in oxygen sensing.
  • Identification of critical knowledge gaps and future research directions.
  • Focus on non-transcriptional roles of HIFs, 2-OGDDs, and O2 detection methods.

Main Results:

  • Identified non-transcriptional roles of HIFs as a critical area for investigation.
  • Highlighted the need to clarify the specificity and O2 sensitivity of 2-oxoglutarate-dependent dioxygenases (2-OGDDs).
  • Emphasized the importance of developing novel tools for detecting O2 concentrations in cells and organs.

Conclusions:

  • Further investigation into these highlighted areas will advance the understanding of cellular responses to hypoxia.
  • Addressing these complexities is essential for answering major questions in physiology and pathology.
  • This work provides a roadmap for future research in the dynamic field of oxygen sensing.