Cardiology

Could your smart watch alert you to risk of sudden death?

Researchers have developed an algorithm that could ultimately enable smart watches to alert wearers to potentially deadly changes in their heart rhythm. The research, presented at the British Cardiovascular Society conference, ...

Diseases, Conditions, Syndromes

Improving heart health may reduce the severity of COVID-19 disease

High blood pressure, smoking, obesity, heart disease and diabetes are associated with worse outcomes in patients with COVID-19, according to a study published today in European Heart Journal—Quality of Care and Clinical ...

Cardiology

Emergency care for heart attacks and strokes rebounds

The significant declines in heart attack hospitalizations and emergency care for possible strokes seen in Northern California at the beginning of the COVID-19 pandemic were not seen in subsequent surges, new research from ...

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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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