Joint Replacement May Raise Heart Attack Risk
Osteoarthritis patients who go through total hip or knee replacement surgery have a higher short-term risk of suffering a heart attack. A recent study, published in the journal Arthritis & Rheumatology, found that these patients may also be at greater long-term risk for developing venous thromboembolism (VTE).
Osteoarthritis (OA) is the most common form of arthritis in the U.S. and is a degenerative joint condition. Because there is currently no known cure, some patients—particularly those with severe cases—often undergo joint replacement, known as arthroplasty.
For the study, researchers from Boston University School of Medicine analyzed 13,849 patients 50 years old and older with knee OA who had total knee replacement surgery during the year 2000. These patients were compared to 13,849 matched controls who did not have the surgery. Additionally, 6,063 patients aged 50 and older with hip OA who had surgery during the same allotted time period were compared to 6,603 matched controls who did not have the surgery.
When the researchers followed up after 4.5 years, 306 of the knee OA patients who underwent the surgery had a heart attack, compared to 286 of the control patients. One pattern found was that heart attack risk was greatest the first month following surgery and then decreased over time.
For the hip OA patients, 128 people who underwent surgery had a heart attack after 4.5 years compared to 138 of the controls. Heart attack risk was greatest six months following hip surgery and then decreased over time compared to those who did not have surgery. People who underwent either surgery were also seen to have a higher risk for developing venous thromboembolism (VTE) —a term that combines deep vein thrombosis (DVT) and pulmonary embolism—a year following the surgery compared to the controls.
These findings were the first population-based evidence that osteoarthritis patients who undergo total knee or total hip replacement surgery are at increased risk of heart attack shortly following surgery.
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Sourced from: medicalnewstoday.com, Hip, knee replacement for osteoarthritis raises risk of heart attack
Published On: Sept 1, 2015