Advanced Cardiovascular Life Support (ACLS) Practice Exam 2026 - Free ACLS Practice Questions and Study Guide

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What effect does hypoxia have on patient outcomes in cardiac arrest situations?

It improves recovery rates by enhancing brain function

It has no impact on patient outcome

It worsens outcomes by causing irreversible brain damage

Hypoxia significantly worsens outcomes in cardiac arrest situations by leading to irreversible brain damage. During a cardiac arrest, the heart stops pumping blood, resulting in a lack of oxygen delivery to vital organs, including the brain. This oxygen deprivation can cause cellular injury and death, particularly in the sensitive neural tissue of the brain that is highly dependent on a continuous supply of oxygen.

In the absence of oxygen, brain cells begin to die within minutes, leading to potential long-term neurological deficits or death. Effective and prompt resuscitation efforts are critical to minimize the duration of hypoxia and improve the chances of a favorable outcome. Therefore, understanding the detrimental effects of hypoxia is crucial in managing cardiac arrest, as it directly correlates with the likelihood of recovering brain function and overall survival.

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It improves heart rhythm restoration

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