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Hypoxia

Hypoxia

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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Related Experiment Video

Updated: Feb 22, 2026

Oxygen-Glucose Deprivation and Reoxygenation as an In Vitro Ischemia-Reperfusion Injury Model for Studying Blood-Brain Barrier Dysfunction

Oxygen-Glucose Deprivation and Reoxygenation as an In Vitro Ischemia-Reperfusion Injury Model for Studying Blood-Brain Barrier Dysfunction

Published on: May 7, 2015

Anoxic-Ischemic Brain Injury.

Jennifer E Fugate¹

¹Department of Neurology, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.

Neurologic Clinics

|October 1, 2017

Summary

This summary is machine-generated.

Accurate neurologic prognosis after cardiac arrest is challenging. Combining clinical exams with tests like EEG and biomarkers improves outcome prediction for comatose survivors.

Keywords:

Anoxic-ischemic brain injury Cardiac arrest Coma Prognostication

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Area of Science:

Emergency Medicine
Neurology
Critical Care Medicine

Background:

Advances in cardiopulmonary resuscitation and intensive care have improved survival after out-of-hospital cardiac arrest.
However, a significant number of survivors remain comatose, posing a challenge for neurologic prognosis.
Accurate and early prediction of neurologic outcomes is crucial for patient management and resource allocation.

Purpose of the Study:

To highlight the challenges in estimating neurologic prognosis for comatose patients post-resuscitation.
To emphasize the need for a multimodal approach integrating various diagnostic tools.
To underscore that no single predictor is sufficient for determining neurologic outcomes.

Main Methods:

Review of current practices and available diagnostic modalities for neurologic prognostication.
Integration of clinical examination findings with complementary test results.
Consideration of data from somatosensory evoked potentials, electroencephalogram, serum biomarkers, and neuroimaging.

Main Results:

Neurologic prognosis estimation for comatose survivors of cardiac arrest remains complex.
A combination of clinical assessment and multiple diagnostic tests offers more reliable prognostic information.
Individual tests should not be the sole basis for prognostic decisions.

Conclusions:

A comprehensive approach, integrating clinical examination with neurophysiological, biochemical, and imaging data, is essential for accurate neurologic prognostication.
Multimodal assessment improves the reliability of predicting outcomes in comatose post-cardiac arrest patients.
Early and accurate prognostic predictors are vital for guiding clinical decisions and patient care.