Like apnea = holding your breath, etc.
2006-11-05 23:24:09 · 7 answers · asked by jess 2 in Science & Mathematics ➔ Biology
Tachycardia is an abnormally rapid beating of the heart, defined as a resting heart rate of 100 or more beats per minute in an average adult.
It can have harmful effects, in two ways. First, when the heart beats too rapidly, it performs inefficiently (since there is not enough time for the ventricles to fill completely), causing cardiac output to diminish. Second, it increases the work of the heart, causing it to require more oxygen while also reducing the blood flow to the cardiac muscle tissue, increasing the risk of ischemia and resultant infarction.
Tachycardia is a general symptomatic term that does not describe the cause of the rapid rate. Common causes are autonomic nervous system or endocrine system hemodynamic responses and various forms of cardiac arrhythmia.
2006-11-05 23:32:49 · answer #1 · answered by No matter what happens i ll... 2 · 1⤊ 5⤋
Tachycardia
2006-11-06 12:01:28 · answer #2 · answered by Ata ul Munim 1 · 1⤊ 0⤋
Tachycardia
2006-11-05 23:28:18 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Tachycardia is a heart rate that is faster than normal.
2006-11-05 23:27:05 · answer #4 · answered by Richard 7 · 7⤊ 0⤋
tachycardia
2006-11-06 03:56:17 · answer #5 · answered by navita k 2 · 1⤊ 0⤋
tachycardia
2006-11-06 00:28:14 · answer #6 · answered by raintigar 3 · 1⤊ 0⤋
tachycardia
2006-11-05 23:33:25 · answer #7 · answered by kalie s 2 · 1⤊ 0⤋