Learn how artificial pacemakers and defibrillators work to keep the heart beating and prevent malfunctions.
Your heart's job is to keep your pulse steady to pump blood throughout your body. Sometimes your heart rate is slower when you're relaxing, and sometimes it's faster when you're exercising or stressed. If your heart's ability to keep the beat starts to go awry, artificial pacemakers keep blood and oxygen flowing during times of stress.
Defibrillators are devices that detect dangerously fast heart rates and deliver shocks like those used during cardiopulmonary resuscitation, also known as CPR, to restart the heart. Understanding how these devices work requires appreciating how the heart's electrical system works and the weak links that cause malfunctions. Sets your "resting" heart rate, usually somewhere between 60 and 100 beats per minute. This is the base effort needed to circulate enough blood to sustain normal bodily function. Elevated levels of certain hormones circulating in the body, such as adrenaline and serotonin, can Trained athletes frequently have a lower resting heart rate due to extra physical conditionin
Heart Pulse Blood Artificial Pacemakers Defibrillators Electrical System Malfunctions Resting Heart Rate Hormones Athletes
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