Heart Attack (Myocardial Infarction) News and Research

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A Heart Attack (Myocardial Infarction) occurs when blood flow to a section of heart muscle becomes blocked. If the flow of blood isn’t restored quickly, the section of heart muscle becomes damaged from lack of oxygen and begins to die.

Heart attack is a leading killer of both men and women in the United States. But fortunately, today there are excellent treatments for heart attack that can save lives and prevent disabilities. Treatment is most effective when started within 1 hour of the beginning of symptoms. Heart attacks occur most often as a result of a condition called coronary artery disease (CAD). In CAD, a fatty material called plaque (plak) builds up over many years on the inside walls of the coronary arteries (the arteries that supply blood and oxygen to your heart). Eventually, an area of plaque can rupture, causing a blood clot to form on the surface of the plaque. If the clot becomes large enough, it can mostly or completely block the flow of oxygen-rich blood to the part of the heart muscle fed by the artery.

Use of thiazolidinediones by seniors linked with increased risk of heart problems

Older patients treated with the diabetes medications known as thiazolidinediones (which include rosiglitazone) had a significantly increased risk of heart attack, congestive heart failure and death, compared with the use of other hypoglycemic drugs, according to a study in the December 12 issue of JAMA.

13 Dec 2007

Anti-diabetic drug pioglitazone lowers cardiovascular risk in diabetic patients with kidney disease

A new study confirms that chronic kidney disease (CKD) increases the already-high risk of serious cardiovascular events in diabetic patients with damage to the large blood vessels and suggests that treatment with the anti-diabetic drug pioglitazone may help to lower this risk, reports the January Journal of the American Society of Nephrology.

13 Dec 2007

GlaxoSmithKline response to JAMA article on ICES retrospective analysis

The following is GlaxoSmithKline's response to the retrospective analysis by the Institute for Clinical Evaluative Sciences (ICES) titled "Thiazolidinediones and Cardiovascular Outcomes in Older Patients with Diabetes".

13 Dec 2007

Telmisartan potent against stroke

Telmisartan, a drug widely used to help control blood pressure, may have uniquely potent activity in preventing stroke, according to a new study conducted in an animal model.

13 Dec 2007

Exercise testing to predict mitral regurgitation

In as many as one in five people over age 55, when the heart contracts to send blood around the body, some degree of backward leakage occurs across the mitral valve, a condition known as mitral regurgitation (MR).

12 Dec 2007

Exercise testing may help predict seriousness of mitral regurgitation

12 Dec 2007

Adult stem cell heart attack study updated

Doctors are using patients' own bone marrow stem cells (progenitor cells) to treat the damage to cardiac muscle after a heart attack in a study at Emory University School of Medicine.

12 Dec 2007

New studies on brain and behavior from the world's leading scientists

The 2007 American College of Neuropsychopharmacology Annual Meeting will feature hundreds of new studies on brain and behavior from the world's leading scientists.

10 Dec 2007

Being in good shape after 40 reduces risk of stroke

People who have good physical function after the age of 40 may lower their risk of stroke by as much as 50 percent compared to people who are not able to climb stairs, kneel, bend, or lift as well, according to research published in the December 11, 2007, issue of Neurology®, the medical journal of the American Academy of Neurology.

10 Dec 2007

Calcium in coronary arteries may be linked to increased risk for heart disease in low-risk women

About 5 percent of women considered low-risk for heart disease by current classification standards have evidence of advanced coronary artery calcium and may be at increased risk for cardiovascular events, according to a report in the December 10/24 issue of Archives of Internal Medicine.

10 Dec 2007

Depression nearly triples the risk of death following a heart attack

...even when accounting for other heart attack risk factors, according to research presented at the American College of Neuropsychopharmacology (ACNP) annual meeting, which showed that among 360 depressed, post myocardial infarction patients followed for more than six years, those who did not recover from their depression in the first six months were more than twice as likely to die.

10 Dec 2007

Winter flu doubles the risk of heart attacks and stroke

Scientists in Britain say a dose of winter infections such flu can double the risk of heart attacks and strokes.

9 Dec 2007

Implanting embryonic cardiac cells prevents arrhythmias

When researchers at Cornell, the University of Bonn and the University of Pittsburgh transplanted living embryonic heart cells into cardiac tissue of mice that had suffered heart attacks, the mice became resistant to cardiac arrhythmias, thereby avoiding one of the most dangerous and fatal consequences of heart attacks.

5 Dec 2007