Normally An Adult Heartbeat?
Excuse me, I want to ask, now my heart rate is 18 × per minute, is that normal or not?
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The heart functions to pump blood throughout the body, to supply oxygen and nutrients to all body cells. Therefore, the amount and strength of the heart's pump is tightly regulated by the body through the nervous system and the hormonal system, as needed. When the body needs a lot of oxygen or energy (for activities), the heart pump is accelerated, and vice versa.
Adult heart rates normally range from 60-100x per minute. Heartbeats faster than 100x / min are called tachycardia, and heartbeats lower than 60x / min are called bradycardia. In children the heart rate tends to be faster, and in the elderly it tends to be slower. There are several conditions or situations where in normal adults the heart rate can cross the normal range (tachycardia and bradycardia), such as when after activity or exercise, when shocked or scared, or when the ambient temperature is very cold or hot. But in these conditions, changes in heart rate are only temporary, and will soon be returned to normal frequency by the body's hormonal and nervous system.
In addition, other conditions that can cause heart rhythm disorders, especially bradycardia are such as:
AV block Heart attack Heart failure Heart infection (endocarditis) Thyroid disorders (hypothyroidism) Drug side effects Each disease has different causes and different treatments. Further tests are needed to find out more certain about your condition, such as physical examination, vital signs, ECG, echocardiography, and laboratory blood tests (electrolytes, heart enzymes, etc.).
However you do not need to worry, because even in heart disease, the heart rate will usually not touch the number 18x / minute and with the condition of the patient is still in a state of consciousness and without symptoms. A heart that beats for only 18x / minute can cause a lack of blood supply to the brain so that most patients are in an unconscious condition and within a few minutes can cause cell death, so you are most likely to take measurements in the wrong way.
You can try to measure your heart rate again by:
Use your three fingers (index, middle, and ring finger) and place and press slightly in one of several areas on the body: the inner wrist under the thumb, inner neck, or upper part of the heel. Touch and move if you haven't felt your pulse. Count the number of beats in one minute. But if you still get an abnormal value, I suggest you to see a doctor to have a more complete examination.
As much as my information, hopefully can help.