Heart Health Archive

Research we're watching

Doctors have long known that mental or psychological stress can lead to angina (chest pain or discomfort caused by inadequate blood to the heart). Now, new research reveals a direct correlation between angina and stress-related activity in the brain's frontal lobe. The study included 148 people with coronary artery disease with an average age of 62. All underwent brain and heart imaging tests done in conjunction with mental stress testing, which involved mental arithmetic and public speaking. Imaging tests were also done under "control" conditions, which featured simple counting and recalling a neutral event. Researchers monitored the participants for angina during the tests; they also assessed angina rates again after two years.

Activity in the inferior frontal lobe area of the brain during mental stress was linked to the severity of self-reported angina, both during the brain imaging and at the two-year follow-up. A better understanding of how the brain reacts to stress may be an important consideration for doctors who treat angina, according to the study's lead author. The study was published online Aug. 10, 2020, by the journal Circulation: Cardiovascular Imaging.

Research we're watching

Serious heart complications are common in people hospitalized with influenza, according to a study published online Aug. 25, 2020, by Annals of Internal Medicine.

Researchers from the CDC looked at the rates of cardiovascular problems in more than 80,000 adults hospitalized with a confirmed case of influenza (commonly called the flu) from 2010 to 2018. Almost 12% had a serious cardiovascular problem, most commonly heart failure or a lack of adequate blood flow to the heart, known as acute coronary syndrome. The body's immune response against the infection can trigger inflammation and other changes that harm the cardiovascular system.

Doctors have begun to study the effects of COVID-related stress and anxiety on people. A recent study suggests that stress caused by the pandemic may already be affecting heart health.

Taking an aspirin can protect you from heart attack, blood clots and more

First marketed by the Bayer Company in 1897, aspirin (acetylsalicylic acid) is one of our oldest modern medications — and its parent compound is much older still, since Hippocrates and the ancient Egyptians used willow bark, which contains salicylates, to treat fever and pain. Over the past 100 years, aspirin has made its way into nearly every medicine chest in America. Indeed, this old drug is still widely recommended to control fever, headaches, arthritis, and pain.

Although aspirin remains an excellent medication for fever and pain, other drugs can fill these roles equally well. But aspirin has a unique role that was not even suspected by its early advocates. In patients with coronary artery disease, aspirin prevents heart attacks.

Atrial fibrillation can be dangerous from a fast heart rate and a higher stroke risk

Is atrial fibrillation serious? People who are old enough to remember the sound of wind-up clocks often refer to their hearts as their "tickers." It's an affectionate term that pays tribute to the regular, rhythmic beat of the healthy heart. In fact, though, the healthy heart is much more sophisticated than the most precise Swiss timepiece.

Instead of maintaining a single, monotonous beat, the heart can speed up in response to exercise, strong emotions, and fever. Common chemicals can also jack up the heart rate; examples include caffeine, nicotine, and decongestants. And the healthy heart can also slow down when you rest, relax, or sleep.

Discovered more than 150 years ago, this drug comes in a variety of formulations. Does one make sense for you?

If your heart's arteries are choked with cholesterol-filled plaque, a sudden increase in the heart's demand for oxygen-rich blood from physical exertion or emotional stress can trigger the chest pain known as angina. But a tiny tablet of nitroglycerin often relieves the pain within minutes.

Nitroglycerin is underused

Nitroglycerin and related drugs, known as nitrates, widen the arteries that nourish the heart and reduce the heart's workload. Under-the-tongue (sublingual) nitro- glycerin tablets are perhaps the best-known version of this common medication. But nitrates come in a variety of different formulations (see "Nitrates for angina: Many choices").

Plant chemicals known as flavonoids may explain why tea drinkers seem less likely to have cardiovascular disease.

Black or green, hot or iced, tea is gaining in popularity. Many cities and shopping malls feature specialty tea shops, and bottled teas vie for space on store shelves. The tea market continues to grow year after year.