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... iced tirelessly, practiced tirelessly, and finally determined one thing:
The timing for direct current defibrillation was not something a 7th-level mage could master through human effort alone.
——The window of opportunity was simply too short. The normal human heart rate ranges from 60 to 100 beats per minute, which means one beat every 0.6 to 1 second.
During atrial fibrillation, the heart rate can reach 150 to 500 beats per minute, with the fastest being one beat every ...
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