Diseases, Conditions, Syndromes

What is COVID doing to our hearts?

Cardiologist Nisha Parikh, M.D., MPH, discusses what we know so far about COVID-19's impact on the body's cardiovascular system, from affecting the heart's rhythm to impairing its ability to pump blood throughout the body.

Cardiology

Less sedentary time reduces heart failure risk for older women

Even with regular physical activity, older women (ages 50-79) who spend more waking hours in sedentary behaviors, such as sitting or lying down, have an increased risk of heart failure serious enough to require hospitalization, ...

page 1 from 2

Hypertension (HTN) or high blood pressure, sometimes arterial hypertension, is a chronic medical condition in which the blood pressure in the arteries is elevated. This requires the heart to work harder than normal to circulate blood through the blood vessels. Blood pressure involves two measurements, systolic and diastolic, which depend on whether the heart muscle is contracting (systole) or relaxed (diastole) between beats. Normal blood pressure is at or below 120/80 mmHg. High blood pressure is said to be present if it is persistently at or above 140/90 mmHg.

Hypertension is classified as either primary (essential) hypertension or secondary hypertension; about 90–95% of cases are categorized as "primary hypertension" which means high blood pressure with no obvious underlying medical cause. The remaining 5–10% of cases (secondary hypertension) are caused by other conditions that affect the kidneys, arteries, heart or endocrine system.

Hypertension is a major risk factor for stroke, myocardial infarction (heart attacks), heart failure, aneurysms of the arteries (e.g. aortic aneurysm), peripheral arterial disease and is a cause of chronic kidney disease. Even moderate elevation of arterial blood pressure is associated with a shortened life expectancy. Dietary and lifestyle changes can improve blood pressure control and decrease the risk of associated health complications, although drug treatment is often necessary in patients for whom lifestyle changes prove ineffective or insufficient.

This text uses material from Wikipedia licensed under CC BY-SA