Heart Health Archive

Articles

Flu vaccine offers benefits to patients with heart failure

New research found that heart failure patients who had a flu shot had a 30% lower risk of hospitalization for cardiovascular disease, 16% lower risk of hospitalization for respiratory infections, and a 4% lower risk of hospitalization in general. 

How accurate are drugstore blood pressure machines?

An electronic home blood pressure monitor is a better option than a store-based machine for measuring blood pressure between doctor office visits. Arm cuff machines are more accurate than wrist cuff models. 

Feel the beat

Your resting heart rate can be an instant measure of your present and future health.


 Image: Bigstock

One of the easiest ways to gauge your health can be done in 30 seconds with two fingers. Measuring your resting heart rate (RHR), the number of heartbeats per minute while at rest, provides a real-time snapshot of your heart muscle function.

It is easy to do. Place your index and middle finger on your wrist just below the thumb, or on your neck to one side of your throat, so you can feel your pulse. Use a watch to count the number of beats for 30 seconds and double it to get your beats per minute. Repeat a few times to get an accurate reading. A normal RHR for most adults ranges from 60 to 100 beats per minute.

Migraine linked with increased risk of heart disease in women

Migraine headaches are associated with an increased risk of heart disease as well as stroke in women.

Hormones and your heart

Age-related drops in sex hormone levels sometimes cause undesirable symptoms. But is hormone therapy safe for the heart?


 Image: monkeybusinessimages/Thinkstock

A decline in sex hormones is a natural part of growing older. Still, it's only natural to want to feel robust, mentally sharp, and healthy as we age. So it's no surprise that hormone therapy—which has been touted by drug companies as a way to restore youthful vigor, first for women and more recently for men—has generated so much interest.

But hormone therapy has a long, controversial history, particularly with regard to how it may affect the risk for common, chronic health problems. The following is a summary of what we know—and don't know—about the cardiovascular effects of hormone therapy for women and men.

Recovering from bypass surgery

Recovering from heart bypass surgery usually takes at least six weeks. Common challenges include feeling weak and tired, a loss of appetite, constipation, and depression. Also, heavy lifting and driving should be avoided. 

Is your heart healthy enough for surgery?

If you're at risk for heart disease, you may need additional testing before a hip replacement or other major surgery.


 Image: photodisc/Thinkstock

All surgery, even minor procedures like cataract removal, involves a certain amount of stress. People facing surgery might experience emotional stress related to their illness or condition, often coupled with concerns about their recovery.

Some of the most common noncardiac surgeries done in older people, such as a hip replacement or gallbladder removal, can also put physical stress on the heart. Anesthesia and the operation itself can causes changes in heart rate and blood pressure as well as unmask previously undiagnosed heart disease.

Gut reaction: How bacteria in the belly may affect the heart

A better understanding of the gut microbiome may herald novel ways to prevent artery-clogging plaque.


Image: Christos Georghiou/Thinkstock

The trillions of bacteria dwelling deep inside your digestive tract play a key role in your health. Collectively known as the gut microbiota, these microbes not only assist with digestion, but also make certain vitamins, break down toxins, and train your immune system. Over the past decade, scientists have uncovered compelling connections between different types of gut microbes and the development of obesity and diabetes—two factors closely tied to a higher risk of heart disease. Recently, several studies have explored how our gut microbes interact with the food we eat to spur artery-damaging inflammation and narrowing. While these findings are preliminary, experts hope they'll one day lead to personalized diet recommendations or other therapies to lower the risk of heart disease.

Artery damage

Avoiding blockages

The investigators then tested a molecule that blocks the production of TMA, which they gave to mice prone to atherosclerosis, thanks to their genes and a high-fat diet. The molecule, called DMB, occurs naturally in olive oil and red wine. The mice that got DMB in their water had healthier, clearer arteries than those that didn't.

Earlier this year, Chinese researchers described a different but related approach to preventing blood vessel injury in atherosclerosis-prone mice. By giving the mice a specific strain of bacteria called Akkermansia muciniphila, they discovered that they could prevent inflammation—the chronic, persistent immune response that contributes to the buildup of fatty plaque in arteries. The effect was largely due to a protein that was able to "tighten up" the communication between cells in the inner lining of the gut, Dr. Loscalzo explains. As a result, fewer toxins from the diet could pass from the gut into the bloodstream, which in turn dampened inflammation.

Gut check?

Hypertrophic cardiomyopathy: Who has an inherited risk?

Genetic testing can help doctors guide care for families with a history of heart disease.

Having a family member with heart disease—especially when it shows up at a young age—is a warning sign that you too may be at risk. The more common maladies such as high blood pressure and coronary artery disease are influenced by an array of different genes and compounded by lifestyle choices and environmental factors. However, certain relatively rare conditions stem from only one or a few faulty genes with powerful disease-causing effects. The most common of these inherited heart conditions is hypertrophic cardiomyopathy (HCM), which affects up to one in every 500 people.

What is HCM?

The detective work

The genetic risk for HCM is passed from one generation to the next by way of dominant-acting mutations in genes governing the structure of the heart muscle. That means that first-degree relatives (parents, siblings, and children) of an affected person have a 50% chance of having inherited the same mutation. Before genetic testing became widely available, doctors had only this information to help guide families. Now, it's possible to determine if a family member is at risk for developing HCM even before the disease can be clinically diagnosed.

"When you decide do genetic testing, the implications go beyond just the individual being tested," says Dr. Ho. The most efficient approach is first to do comprehensive gene sequencing on the person with the most serious manifestation of disease. This gives the best chance of uncovering the most important disease-causing mutations. If an HCM mutation is found, other family members can undergo more limited—and less costly—screening to look for that specific mutation.

Decision making in the family

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