Why does CPR sometimes revive a dead person, and sometimes does nothing? what is the deciding factor in it working?
It doesn't revive a dead person. That's a movie thing. It's to keep blood pumping around the body until medical personnel arrive and can administer drugs that get the heart pumping again on its own.
The Short Answer
It doesn't revive a dead person. That's a movie thing. It's to keep blood pumping around the body until medical personnel arrive and can administer drugs that get the heart pumping again on its own. It rarely even works for that. Almost all people who receive CPR will not be revived and most of the ones who are revived will die within hours or days.
Analysis
Key Concepts: Pumping, revived, doesn't
This explanation focuses on pumping, revived, doesn't and spans 65 words across 5 sentences. The depth is typical for History questions (category average: 72 words), striking a balance between accessibility and completeness.
What This Answer Covers
The explanation opens with: “It doesn't revive a dead person.” It then elaboratesultimately building toward a complete picture across 5 connected points.
How This Compares in History
Ranked #242 of 500 History questions by answer depth (top 49%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.
Frequently Asked Questions
Is there a simple explanation for why cpr sometimes revive a dead person, and sometimes does nothing? what is the deciding factor in it working?
It doesn't revive a dead person. That's a movie thing. It's to keep blood pumping around the body until medical personnel arrive and can administer drugs that get the heart pumping again on its own. It rarely even works for that. Almost all people…
How detailed is this explanation compared to similar History questions?
This is an above-average answer at 65 words, ranked #242 of 500 History questions by depth. The key concepts covered are pumping, revived, doesn't.
What approach does this answer take to explain cpr sometimes revive a dead person, and sometimes does nothi?
The explanation uses direct explanation across 65 words. It is categorized under History and addresses the question through 1 analytical lens.