News tagged with heart

Related topics: heart attack , heart failure , heart disease , heart muscle , patients

Pyridoxine-doxylamine drug safety data lacking

(Medical Xpress)—The most commonly prescribed drug for pregnant women suffering from morning sickness in their first trimester does not prevent birth defects even though drug safety data says it does, according to research ...

Apr 16, 2014
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FDA approves expanded indication for CRT devices

(HealthDay)—The U.S. Food and Drug Administration has approved an application from Medtronic for revised labeling for two cardiac resynchronization pacemakers (CRT-P) and eight cardiac resynchronization ...

Apr 15, 2014
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Heart

The heart is a muscular organ in all vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in annelids, mollusks, and arthropods. The term cardiac (as in cardiology) means "related to the heart" and comes from the Greek καρδιά, kardia, for "heart."

The heart of a vertebrate is composed of cardiac muscle, an involuntary striated muscle tissue which is found only within this organ. The average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times during a lifetime (about 66 years). It weighs on average 250 g to 300 g in females and 300 g to 350 g in males.

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