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Implantable defibrillators save lives but may increase heart failure risk
June 13, 2006American Heart Association rapid access journal report
Implantable cardioverter defibrillators (ICDs) reduce the risk of sudden cardiac death but may increase the risk of subsequent heart failure in patients who live longer, according to a study published in Circulation: Journal of the American Heart Association.
"Some patients whose lives were prolonged by ICDs were sicker and more prone to develop heart failure," said Ilan Goldenberg, M.D., research assistant professor at the University of Rochester Medical Center and lead author of the latest report from the Multicenter Automatic Defibrillator Implantation Trial-II (MADIT-II). "The ICD kept them alive by preventing sudden cardiac death as their heart disease naturally progressed to heart failure.
"Patients who developed heart failure had almost four times the increase in risk of death during follow up. This study should direct more attention to the prevention of heart failure in patients receiving an ICD.\\\
American Heart Association
"Patients who developed heart failure had almost four times the increase in risk of death during follow up. This study should direct more attention to the prevention of heart failure in patients receiving an ICD.\\\
American Heart Association
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Magnets may pose serious risks for patients with pacemakers and ICDs
Magnets may interfere with the operation of pacemakers and implantable cardioverter defibrillators (ICDs), according to a study published in the December 2006 edition of Heart Rhythm.
Kidney disease increases risk of sudden cardiac death for ICD patients
End-stage kidney disease significantly increases the risk of life-threatening heart rhythm abnormalities in patients with implantable cardioverter defibrillators (ICDs).
JAMA study provides clues to cause of sudden cardiac death in teens
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Consumption of fish oil does not appear to protect against abnormal heart rhythms
Patients with an implantable cardioverter defibrillator did not have a significantly lower risk of serious abnormal heart rhythms or death by consuming fish oil supplements, which had been thought to have a protective effect.
Successful prevention of sudden death by ICD has implications for heart failure
Researchers believe a device that treats electrical malfunctions in the heart is so effective at preventing sudden death that very ill patients are living long enough to develop heart failure.
Engineered heart tissue offers insights into irregular heartbeats, defibrillator failure
Engineers who have induced heart cells in culture to mimic the properties of the heart have used the tissue to gain new insight into the mechanisms that spawn irregular heart rhythms.
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