Category Archives: Heart & Circulation

Heart on a chip

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University of California, Berkeley researchers, led by bioengineering professor Kevin Healy, have been able to test heart drugs on human cardiac muscle cells housed in an inch-long silicone device.

The video shows cardiac muscle cells before and after exposure to isoproterenol, a drug used to treat certain heart ailments, including bradycardia (slow heart rate). It’s clear that the cells beat faster after 30 minutes of exposure to isoproterenol.The study’s lead author is Anurag Mathur.

The project is funded through the Tissue Chip for Drug Screening initiative, an interagency collaboration launched by the National Institutes of Health to develop 3-D human tissue chips that model the structure and function of human organs.

“Ultimately, these chips could replace the use of animals to screen drugs for safety,” said Healy.

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The Salty Truth: Many Popular Foods With Unhealthy Amounts of Salt – ABC News

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pizzaYou may be consuming more salt than you need — and the salt shaker is probably not to blame.

When researchers at the Centers for Disease Control and Prevention sought to shake out how much sodium — a major component of table salt — was in various food items nationwide, they found that the biggest high sodium offenders were pizzas, pastas and meats, nearly 75 percent of which exceeded national sodium thresholds. Additionally, more than half of cold cuts, soups and sandwiches contained more than a healthy amount of sodium.

via The Salty Truth: Many Popular Foods With Unhealthy Amounts of Salt – ABC News.

 

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New Guidelines Call for No Heart Tests for Low-Risk Patients – US News

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EKG tracingMany patients who are at low risk for heart problems don’t need to have screening tests such as EKGs and stress tests, a national association of primary care physicians recommends.

The new guideline jibes with research that has suggested the tests are overused in patients who don’t need them.

via New Guidelines Call for No Heart Tests for Low-Risk Patients – US News.

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Couch Potatoes Rejoice: Strenuous Exercise May Be Unhealthy – WSJ

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potatoA recent study in Circulation, a journal of the American Heart Association, found that exercising strenuously four to seven days a week conferred an increased risk of vascular disease, compared with two to three days a week of strenuous exercise.

Accompanying the study, published in Circulation’s Feb. 24 edition, is an editorial entitled, “Physical Activity: Can There Be Too Much of a Good Thing?”

Photo: Courtesy of Sanja Gjenero

via Couch Potatoes Rejoice: Strenuous Exercise May Be Unhealthy – WSJ.

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Mediterranean Diet associated with lower heart disease risk

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Olives MediterraneanAdults who adhere to a Mediterranean style diet—one that stresses eating fresh fruits and vegetables, whole grains, beans, nuts, fish, olive oil and moderate consumption of red wine—were 47% less likely to develop heart disease than peers, according to a Greek study.

The diet is more a suggested eating pattern than a strict prescription for food intake. It calls for avoiding sugar, refined carbohydrates, and red meat.

PHOTO: Courtesy of Sanja Gjenero

via More Good News on Mediterranean Diet.

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The ABCs of heart health

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HeartBy: Janet Wright, MD, Executive Director, Million Hearts

Heart disease and stroke are the first and fourth leading causes of death in the United States. Heart disease is responsible for 1 of every 4 deaths in the country.

For some groups, such as African Americans, the burden is even greater.

As a nation, we can—and must—change these numbers.

The good news is that heart disease and stroke can be prevented, and February—American Heart Month—is a great time to refresh your memory on the small but important actions you can take.

The national Million Hearts® initiative is working to prevent 1 million heart attacks and strokes by 2017. How can you reduce your risk? One way is to know your ABCS:

A: Ask your health care provider about taking Aspirin. Continue reading

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Is your heart doctor out? If so, you may be better off.

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Heart monitor tracingBy Jordan Rau
KHN

If your cardiologist is away at a conference when you’re having a stabbing feeling in your chest, don’t fret. You may be more likely to live.

study published Monday in the journal JAMA Internal Medicine found frail patients admitted to teaching hospitals with two common types of heart problems were more likely to survive on days when national cardiology conferences were going on.

The researchers also discovered that heart-attack patients who were at higher risk of dying were less likely to undergo angioplasties when conferences were occurring, yet their mortality rates were the same as similar patients admitted at other times.

An angioplasty—in which a doctor unblocks an artery with an inflatable balloon inserted by a small tube—is one of the most common medical procedures for cardiac patients.

The conclusions about teaching hospitals surprised even the authors, who had begun their inquiry anticipating that death would be more common during cardiology meetings because hospital staffs were more short-handed than usual. Finding the opposite, the researchers speculated that for very weak patients, aggressive treatments may exceed the benefits. Continue reading

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Health news headlines – October 24th

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Silhouettes of U.S. Soldiers at night in Iraq

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Women’s Health – Week 46: Stroke

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tacuin womenFrom the Office of Research on Women’s Health

A stroke, also called a brain attack, occurs when blood flow to the brain suddenly stops. Blocked or damaged vessels are the two major causes of stroke.

During a stroke, brain cells begin to die because oxygen and nutrients cannot reach them. The longer blood flow is cut off to the brain, the greater the damage.

Every minute counts when someone is having a stroke. Immediate treatment can save a person’s life and enhance the chance for a successful recovery.

stroke

Diagram showing what happens in the brain during a hemorrhagic stroke and a ischemic stroke.

There are two kinds of stroke: Continue reading

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Extreme obesity may shorten life expectancy up to 14 years

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ScaleFrom the National Cancer Institute

Adults with extreme obesity have increased risks of dying at a younger age from cancer and many other causes including heart disease, stroke, diabetes, and kidney and liver diseases, according to a new study.

The study, led by researchers from the National Cancer Institute (NCI), part of the National Institutes of Health, found that people with class III (or extreme) obesity had a dramatic reduction in life expectancy compared with people of normal weight. The findings appeared July 8, 2014, in PLOS Medicine.

 Six percent of US adults are now classified as extremely obese

“While once a relatively uncommon condition, the prevalence of class III, or extreme, obesity is on the rise. In the United States, for example, six percent of adults are now classified as extremely obese, which, for a person of average height, is more than 100 pounds over the recommended range for normal weight,” said Cari Kitahara, Ph.D., Division of Cancer Epidemiology and Genetics, NCI, and lead author of the study.  Continue reading

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Death with Dignity Act prescriptions rise 43 percent

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Washington MapThe number of Washington state residents who obtained prescriptions for a lethal dose of drugs under the state’s Death with Dignity Act rose from 121 in 2012 to 175 in 2013, a 43% increase over the previous year.

Of the 159 who died

  • 77 percent had cancer
  • 15 percent had a neuro-degenerative disease, including amyotrophic lateral sclerosis (also known as Lou Gehrig’s disease).
  • 8 percent had other conditions, including heart and respiratory disease,

Their ages ranged from 29 to 95 years. Ninety-seven percent were white, and 76% had some college education. Ninety-five percent lived west of the Cascades.

Of the 159 who died, 119 ingested the medication and 26 did not. In 14 cases, it is unknown whether they took the medicines.

Reasons that patients gave for obtaining the lethal prescriptions included

  • Concerns about loss of autonomy – 91 percent
  • Concerns about loss of dignity – 79 percent
  • Concerns about loss of the ability to participate in activities that make life enjoyable – 89 percent.

Under the state’s Death with Dignity Act, terminally ill adult patients have had the right to ask their physician to prescribe a lethal dose of medication to end their life. Since the law’s enactment, 550 people have acted on that right since the law went into effect.

The 2013 Death with Dignity Act Report and information about the Washington State Death with Dignity Act are on the agency website.

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King County claims highest cardiac arrest survival rate

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Someone who has a cardiac arrest in King County has a greater chance of survival than anyone else in the world, according an analysis by county officials.

The survival rate for cardiac arrest in King County hit an all-time high of 62 percent in 2013, the analysis found.

By comparison, the cardiac survival rates in New York City, Chicago, and other urban areas have been recorded in the single digits.

According to the analysis, the cardiac survival rate in King County has risen over the past decade or so, from an above-average 27 percent in 2002 to 62 percent in 2013.

Cardiac Arrest

Strategies that have contributed to the rise include: Continue reading

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Can an aspirin a day help prevent a heart attack? That depends, says FDA

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fda-logo-thumbnailAn FDA Consumer Update

Can an aspirin a day help you ward off a heart attack or stroke?

That depends.

Scientific evidence shows that taking an aspirin daily can help prevent a heart attack or stroke in some people, but not in everyone. It also can cause unwanted side effects. Continue reading

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