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.

K55R polymorphism gene variation linked to coronary heart disease

New research at the National Institute of Environmental Health Sciences, part of the National Institutes of Health, found that a common genetic variation makes some people more susceptible to coronary heart disease (CHD).

12 May 2006

Cardiovascular disease impact varies according to age, gender, other factors

Cardiovascular disease deaths have declined in the last 25 years, but the effect of America's No. 1 killer varies greatly based on gender, age, location and type, according to a study reported in Circulation: Journal of the American Heart Association.

9 May 2006

Urgent effort underway to learn how diabetes increases heart disease risk

A researcher at the University of Rochester Medical Center has won the 2006 Thomas R. Lee Career Development Award from the American Diabetes Association (ADA), which includes an $842,400 grant to study how diabetes dramatically increases risk for cardiovascular disease.

8 May 2006

Hormone therapy still the most effective for menopause symptoms

A new study has found that estrogen therapy is the best treatment for menopause-related hot flashes.

3 May 2006

Study helps explain why aerobic training helps heart failure patients

Aerobic training is associated with a reversal of abnormal hormonal patterns that underlie many of the debilitating symptoms of heart failure, according to a new study in the Journal of the American College of Cardiology.

3 May 2006

Heart risks from Vioxx happen much earlier than believed

A new study led by Queen's University researcher Linda Livesque shows that heart attacks related to the use of Vioxx - a drug once popular for the treatment of pain and inflammation - can occur within the first two weeks of use.

3 May 2006

Early myocardial enhancement defects (dark spots) on multidetector CT are valuable predictors of myocardial viability

...in patients who have suffered a heart attack, reported doctors from the departments of cardiology and radiology at Rambam Medical Center in Haifa, Israel.

3 May 2006

Transplanted stem cells hoped to be able to regenerate damaged heart muscle in first heart attack victims

Rush cardiologists are hoping that transplanted stem cells can regenerate damaged heart muscle in those who experience a first heart attack. The study involves an intravenous infusion of adult mesenchymal stem cells from healthy donor bone marrow that might possibly reverse damage to heart tissue.

28 Apr 2006

Does secondhand smoke increase the risk of cardiovascular disease in children?

Whether exposure to secondhand smoke increases the chance that children with a family history of cardiovascular disease will develop the disease themselves is under study at the Medical College of Georgia.

26 Apr 2006

Alternative anti-inflammatory drugs promise less cardiovascular problems

New type of anti-inflammatory drugs may reduce COX-2 cardiovascular problems, says Queen's researcher

25 Apr 2006

New medical device improves blood pressure control

Physicians at the Hypertension and Vascular Disease Center at Wake Forest University Baptist Medical Center have proven that a new medical device improves blood pressure management in patients with the most common form of uncontrolled hypertension.

19 Apr 2006

New guidelines for pulmonary complications

Pulmonary complications, including pneumonia and respiratory failure, are a common - and dangerous - problem for patients following major surgery.

19 Apr 2006

Possible alternatives found for Vioxx and Celebrex

According to Canadian and American researchers they have identified one reason why drugs like Celebrex and Vioxx - once popular for the treatment of pain and inflammation - cause heart problems.

18 Apr 2006

Researchers clarify the mechanism by which drugs like Celebrex and Vioxx cause heart problems

Researchers at the University of Pennsylvania School of Medicine have clarified the mechanism by which drugs like Celebrex and Vioxx cause heart problems, in multiple animal models.

18 Apr 2006

Only 43 percent of older people with diabetes receive medicines that could protect their heart and kidneys

...despite the fact that virtually all of them could benefit from those drugs, a new University of Michigan study finds. And even among those with the most to gain from the medicines, the rate of use barely reaches 53 percent.

18 Apr 2006

Placental growth factor may help body repair heart attack damage

Heart attack patients produce higher levels of a natural substance in the body that plays a role in the growth of new blood vessels and this over-expression of placental growth factor (PlGF) may help reduce damage to the heart muscle

17 Apr 2006

Evista may be a better option than Tamoxifen for reducing breast cancer risk

According to drug company Lilly it's osteoporosis drug Evista is as effective as Tamoxifen in reducing the risk of breast cancer in high-risk women.

17 Apr 2006

Approval of integrated insulin pump and continuous glucose system a significant step towards artificial pancreas technology

The Juvenile Diabetes Research Foundation (JDRF) has said that the federal government's approval of an insulin pump that also provides real-time, continuous glucose monitoring is a significant step on the path to the development of an artificial pancreas, with the potential to significantly improve diabetes care and lower the risk of complications.

13 Apr 2006

Angiotension-converting enzyme inhibitors may reduce cardiovascular risk

Angiotension-converting enzyme (ACE) inhibitors, medications commonly used to treat hypertension (high blood pressure), may reduce cardiovascular risk and the risk of death in patients with coronary artery disease, according to a new analysis of previously conducted clinical trials reported in the Archives of Internal Medicine.

13 Apr 2006

No evidence that taking estrogen alone increases the risk of breast cancer in postmenopausal women

The findings come three years after a related WHI study found that a different type of hormone therapy - which combined estrogen and progestin - did result in a higher risk of breast cancer among postmenopausal women.

13 Apr 2006