Medical Tests & Procedures Archive

Ejection fraction is the fraction (expressed as a percentage) of the blood that the heart "ejects" out to the rest of the body when it contracts. Low ejection fraction signals one form of heart failure. An echocardiogram is the standard test to measure ejection fraction.

A 2023 study found that an oral penicillin challenge in a doctor's office provides a simple method of determining true penicillin allergy.

A transurethral resection of the prostate is considered the gold-standard treatment for benign prostatic hyperplasia. But newer, less invasive procedures offer faster recovery times and fewer risks of complications. Earlier this year another new procedure won the FDA's approval.

As men age, their metabolism naturally slows, and they burn calories more slowly. They can be less active and consume extra calories. The result is a buildup of visceral fat inside the abdominal cavity and around vital organs. This can raise heart disease risk factors, such as blood pressure, blood sugar, and total cholesterol levels. The best way to fight visceral fat is with aerobic exercise, strength training, and a healthy diet that includes plenty of protein.

A polygenic risk score for heart disease is based on an analysis of more than three million common DNA variants and is expressed as a percentile. People can have zero, one, or two copies of any variant, each of which may either raise or lower the risk of coronary artery disease. Many of these variants occur in genes known to affect heart disease, such as those related to cholesterol, blood pressure, and blood clotting. Others aren't well understood and may provide targets for future research, potentially fueling new drug discovery efforts. For now, the potential benefits of this test are greatest for people under 50.

Troponins, which are proteins found in heart muscle cells, are released in the bloodstream during a heart attack. Other conditions, such heart muscle inflammation and chronic kidney disease, can also cause troponin levels to rise.

If people see evidence of plaque buildup inside their arteries, it may motivate them to take better care of their heart health, according to a 2023 study.

Prostate-specific antigen (PSA) screening can help identify early prostate cancer, but it also can lead men to have biopsies and invasive treatments they may not need. This complexity has caused the medical community to re-evaluate how best to use PSA testing. More doctors are using PSA screening in ways that minimize the use of biopsies, such as by following a worrisome test result with MRI of the prostate. If a man does have a biopsy and a cancer is found, PSA testing can help the man follow active surveillance.

Many chronic conditions seem to be related. Examples include obesity, high blood pressure, type 2 diabetes, high cholesterol, and heart disease; hearing loss and dementia; obstructive sleep apnea and high blood pressure; various autoimmune diseases; and obesity and joint problems. People with chronic conditions should ask their doctors about the risk for associated diseases.In some cases, they should have certain health screenings to check for them. In other cases, additional screening isn't automatic.