BLS — Basic Life Support exam topics — the 6 content areas by weight
The BLS — Basic Life Support exam is built from 6 weighted content areas. Focus your time where the weight is. Each area below links to a free study chapter and practice questions. Weights reflect the official content outline.
High-Quality CPR (adult/child/infant)
17%Rate 100-120/min, depth, recoil, ratios
AED Use
17%Sequence, pediatric pads, safety
Team Dynamics
16%Closed-loop communication, roles
Rescue Breathing/Ventilation
17%1-sec breaths, avoid over-ventilation
Relief of Choking
17%Mild vs severe, infant back slaps
Chain of Survival
16%OHCA vs IHCA, early defibrillation
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Content-area weights reflect the official BLS — Basic Life Support content outline. Confirm current details with American Heart Association. Study aid, not a substitute for the official material. Last updated: August 2026.