Heart attack drug less effective for Maori and Pacific Islanders

(Medical Xpress) -- A study has revealed that a common heart attack drug is less effective for Maori and Pacific Island patients.

The collaborative research between Victoria University of Wellington and Capital and Coast District Health Board (C&C DHB), highlights an important issue for New Zealand heart attack sufferers and their medical treatment.

When patients are admitted to hospital with a heart attack, standard practice is to put them on antiplatelet drugs, such as aspirin and clopidogrel. These drugs make the platelets (the cells in the blood that form clots) less ‘sticky’, improving blood flow.

C&C DHB cardiologist Dr. Scott Harding says that although the drugs have been shown to significantly improve patient outcomes, overseas studies have found that patients do not respond equally to these drugs.

"As many as 25-30% of patients tested overseas are not receiving an adequate benefit from this treatment. That means they have a higher risk of experiencing another heart attack or dying following their stay in hospital."

In the New Zealand study, 38% of patients overall did not have an adequate response to the antiplatelet drugs after a heart attack.

The non-response rate for Maori and Pacific Island patients was very high with 57% not demonstrating an adequate response.

"This is an important finding as Maori and Pacific Island patients have a high rate of cardiovascular disease and poor outcomes following heart attacks. This finding could partially explain these poor outcomes," says Dr Harding, who is also an adjunct professor at Victoria University.

Additional aspects of the study also found that the drug dose and the presence of diabetes affected the patients’ response to the drug.

The study conducted by Dr. Harding and Victoria PhD student Lisa Johnston is the first New Zealand-based study to examine what proportion of patients suffering a is not being effectively treated with the standard drug approach.

"You can’t always extrapolate data from international studies and apply it to New Zealand. We have a unique population that means results overseas aren’t necessarily the same for us," says Miss Johnston.

Dr. Harding and Miss Johnston also tested a newly developed antiplatelet drug called Prasugrel, which was shown to be highly effective in that who had not responded adequately to the older drugs. Their findings suggest that certain at-risk groups such as Maori and Pacific Islanders may benefit from receiving Prasugrel.

Provided by Victoria University

not rated yet
add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Study: Removing clot helps limit stroke disability

15 hours ago

For the first time in several decades, a new treatment has been shown to limit the damage from a common type of stroke. Researchers in the Netherlands found that mechanically removing a clot in addition to using a clot-busting ...

Growing shortage of stroke specialists seen

20 hours ago

Although stroke is the No. 4 cause of death and a leading cause of disability in the United States, there's an increasing shortage of neurologists who specialize in stroke care.

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.