People Who Suffer Heart Attacks in Hospital are 10 Times More Likely to Die

A new study suggests that people who suffer a heart attack in the hospital were 10 times more likely to die compared to those who suffer an attack somewhere else and are quickly taken to a hospital.

A new study conducted by American researchers suggests that people who suffer a heart attack in the hospital were 10 times more likely to die compared to those who suffer an attack somewhere else and are quickly taken to a hospital.

That surprising finding comes from a study by University of North Carolina School of Medicine researchers. Their study, which is the first to systematically examine outcomes among hospital inpatients who suffer a type of heart attack called an ST elevation myocardial infarction (STEMI), was published on April 4, 2013 in the Journal of the American Heart Association.

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"We found that the survival rate for outpatients brought to UNC Hospitals for STEMI treatment was slightly more than 96 percent," said George A. Stouffer, MD, distinguished professor in the UNC School of Medicine and senior author of the study. "But the survival rate for inpatients who suffered a STEMI was much lower, only 60 percent."

Part of the difference is explained by the fact people who suffer a STEMI while hospitalized are, as a group, older and sicker than people who suffer a STEMI outside the hospital. But even after adjusting the statistical analysis to account for this, there were still important differences in survival, Stouffer said.

Another possible explanation: Hospital emergency departments are trained to react very quickly when a patient with a suspected STEMI is brought in. For that reason, the time from a STEMI outpatient's arrival to treatment with angioplasty, referred to as "door to balloon time," averages about 45 minutes at UNC Hospitals.

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"In contrast, when patients who are in the hospital for a non-cardiac condition have a STEMI, the onset is not usually heralded by chest pain and thus health care providers may not suspect that a coronary artery has occluded. As a result, the time it takes for restoration of coronary blood flow for inpatients is much slower and more variable," Stouffer said.

These results are based on 48 cases of STEMI among inpatients at UNC Hospitals between Jan. 1, 2007 and July 31, 2011, compared to 227 patients with outpatient STEMI treated at UNC Hospitals during the same time period. UNC Hospitals received the American Heart Association's Gold Level Performance Achievement Award in 2012 for its care of STEMI patients and has a very active STEMI program. The inpatient STEMI survival rates at hospitals that have not received such AHA recognition may be worse.

Heart Attack - Overview
Heart attack is the death of the heart muscle due to loss of blood supply. Heart disease is the leading cause of death in the United States. Other names for heart attack include acute myocardial infarction, coronary thrombosis, and coronary occlusion.

Nationwide, there are approximately 11,000 cases of STEMI a year among hospital inpatients, which would translate into approximately 4,300 deaths based on extrapolating data from this study.

Source-Eurekalert