---
id:"kb-2026-00378"
title:"First Aid CPR"
schema_type:"TechArticle"
category:"health"
language:"en"
confidence:"high"
last_verified:"2026-05-22"
generation_method:"ai_assisted"
ai_models:["claude-opus"]
derived_from_human_seed:true
primary_sources:
  - title:"AHA Guidelines for CPR and Emergency Cardiovascular Care"
    type:"standard"
    year:2020
    url:"https://cpr.heart.org/en/resuscitation-science/cpr-and-ecc-guidelines"
    institution:"American Heart Association"
secondary_sources:
  - title: "MDN Web Docs — HTTP"
    type: "documentation"
    year: 2026
    url: "https://developer.mozilla.org/en-US/docs/Web/HTTP"
    institution: "Mozilla"
  - title: "RESTful Web APIs"
    authors: ["Richardson", "Amundsen"]
    type: "book"
    year: 2013
    url: "https://www.oreilly.com/library/view/restful-web-apis/9781449359713/"
    institution: "O'Reilly"
completeness: 0.88
ai_citations:
  last_citation_check:"2026-05-22"
---

## TL;DR

CPR (Cardiopulmonary Resuscitation) doubles or triples survival chances after cardiac arrest. Hands-only CPR (AHA, 2008): push hard and fast on center of chest, 100-120 compressions/minute, 2 inches deep. No rescue breaths needed for bystanders. AED (Automated External Defibrillator): restores normal heart rhythm.

## Core Explanation

CPR steps (adult): check responsiveness, call emergency, start compressions immediately. Compression-to-breath ratio (trained): 30:2. Continue until AED arrives or EMS takes over. Choking (Heimlich maneuver): abdominal thrusts above navel, inward and upward. Recovery position: unconscious but breathing — on side, airway clear. Stroke (FAST): Face drooping, Arm weakness, Speech difficulty, Time to call emergency.

## Further Reading

- [AHA Guidelines for CPR and Emergency Cardiovascular Care](https://cpr.heart.org/en/resuscitation-science/cpr-and-ecc-guidelines)