Basic Life Support (BLS) Practice Exam

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Prepare for the Basic Life Support Test. Study with flashcards and multiple choice questions, complete with hints and explanations. Get ready for your exam!

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What is the required rate and depth for chest compressions on an adult?

A rate of 80 to 100 compressions per minute and depth of at least 5 cm
A rate of 100 to 120 compressions per minute and depth of at least 5 cm
A rate of 100 to 120 compressions per minute and depth of at least 3 cm
A rate of 60 to 80 compressions per minute and depth of at least 7 cm

The correct answer is: A rate of 100 to 120 compressions per minute and depth of at least 5 cm

The correct choice specifies that chest compressions for adults should be performed at a rate of 100 to 120 compressions per minute with a depth of at least 5 cm. This guideline ensures that adequate blood flow is generated to vital organs during cardiac arrest, which is critical for survival until more advanced medical help arrives. Maintaining this rate allows for effective compression cycles, maximizing the chances of circulating oxygenated blood to the heart and brain. Additionally, a depth of at least 5 cm is necessary to create sufficient pressure to effectively compress the heart and promote circulation. Studies have shown that insufficient compression depth can significantly reduce the chances of successful resuscitation. The importance of both the rate and depth is emphasized in CPR training to ensure that rescuers are aware of the importance of performing compressions that are not only rhythmic but also powerful enough to be effective in restoring blood flow. This combination of a high rate and adequate depth contributes to improved outcomes for individuals experiencing cardiac arrest.