Heart Attack Archive

Pulmonary hypertension affects the pulmonary arteries, which carry blood from the right side of the heart to the lungs. The vessels tighten, become stiff and thick, or develop blood clots. These changes reduce or block blood flow, raising pressure in the pulmonary arteries.

In about half of all cases of heart failure, the heart’s muscles are thin and weak, so the heart can’t pump very well. In the other cases, the muscles are thick and stiff, which prevents the heart from relaxing normally to fill with blood.

Although uncommon, heart infections may trigger inflammation that can damage the heart. People should be aware of the risks and symptoms of the three main types: pericarditis (swelling and irritation of the protective, double-layered membrane that surrounds the heart, called the pericardium), myocarditis (inflammation in the middle, muscular layer of the heart), and endocarditis (inflammation that affects the heart’s inner lining or one or more of the heart’s valves).

Coffee drinking has been linked to a lower risk of dying of heart disease. Coffee contains potent anti-inflammatory substances called polyphenols that may improve blood sugar control and help blood vessels contract and relax. Although the caffeine in coffee may help people control their weight, it can trigger a short-term rise in blood pressure and heart rate. Filtered coffee, which removes substances that may raise LDL (bad) cholesterol, appears to be a better option than unfiltered coffee.

Exposure to microscopic particles called PM_2.5 in air pollution may increase a person’s risk of heart attack, stroke, and heart rhythm disorders. The tiny particles pass from the lungs into the bloodstream, triggering inflammation and other cell-damaging processes. Air pollution comes mainly from coal-fired power plants, industrial factories, and motor vehicles. To limit exposure, people should try to avoid exercising outdoors near busy roads or industrial areas.

People who've never experienced wooziness should call 911 if the symptom comes on suddenly or severely, especially if it's accompanied by other symptoms. However, a person who has experienced wooziness before or been unwell recently should sit down, have a drink of water or juice, and rest for 10 to 15 minutes. If the feeling of wooziness persists, if other symptoms develop, or if it's hard to get up without feeling faint, one should call 911.

A 2022 observational study that included more than 200,000 people found that those who'd had shingles at some point had a 30% higher long-term risk for a major cardiovascular event, compared with people who didn't have shingles.

Sometimes people miss the symptoms of life-threatening conditions such as a heart attack, a stroke, atrial fibrillation, or a pulmonary embolism. To detect the warning signs, people should pay attention to sudden, new symptoms, especially if they include shortness of breath, chest pain, heart palpitations, lightheadedness, confusion, weakness, fatigue, fainting, or a terrible headache. Someone experiencing any of these symptoms should call 911. If symptoms aren't sudden or intense, and people aren't sure if they warrant emergency help, they should call their doctor.

A majority of people in the United States need a large or extra-large blood pressure cuff. To ensure an accurate reading, people should check their arm circumference to make sure they're using the correct cuff size.

Some people who take the anti-clotting drug warfarin (Coumadin) may not need to take low-dose aspirin. Stopping unneeded aspirin use may prevent dangerous bleeding.