Patients With Pacemakers And Defibrillators At Greater Risk For Infection
Posted September 9th, 2011 by Art ZimmetCategories: Current Events, Medical & Nursing Malpractice, Medical Malpractice, Nursing Home Injury, Nursing Malpractice
Patients in the United States who receive permanent pacemakers and defibrillators are now at greater risk of contracting an infection over the life span of the device, new research shows.
Researchers analyzed data from the Nationwide Inpatient Sample — a national database of hospital discharge records — from 1993-2008 and found a significant increase in infections related to cardiac electrophysiological devices or CIED.
Their analysis found that the annual incidence of CIED-related infection increased by 210 percent over the 16-year period studied. Further analysis showed a jump in infections after 2004, directly correlating with an increase in four major comorbidities or other medical conditions: renal failure, respiratory failure, heart failure and diabetes.
“We believe the growing number of clinical comorbidities in this patient population plays a large role in the increase in infections associated with CIEDs,” said Dr. Arnold J. Greenspon, professor of medicine at Jefferson Medical College of Thomas Jefferson University, director of Cardiac Electrophysiology at Thomas Jefferson University Hospital, and lead author of the study. “The patients are sicker, which may place them at higher risk for infection.”
Pacemakers and implantable cardioverter-defibrillators or ICDs are important in regulating the electrical signaling to the heart. Pacemakers help to speed up a slow heart rhythm (bradycardia) whereas ICDs help to slow down rapid heart rhythm (tachycardia), a potentially life-threatening condition.
The study showed a 96 percent increase in CIED implantation, mostly due to a marked increase in the use of ICDs.
“The expanding indications for ICD implantation may have contributed to the rise in infections since many of these patients have multiple medical co-morbidities,” said Dr. Greenspon. The highest infection rates occurred in white males over 65.
“The number of Americans receiving pacemakers and defibrillators has dramatically increased. This analysis shows that the infection risk associated with these devices has, unfortunately, increased as well,” said Greenspon. “A better understanding of the risk factors for infection will improve patient care and, hopefully, reduce the prolonged hospital stays that often result.”
Rising CIED infection rates also have economic implications for hospitals, as these patients require prolonged hospital stays which are associated with increased costs.
Researchers say further investigation into the risk factors that predict CIED infection or therapies to mitigate this issue is warranted.
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