MONDAY, April 29 (HealthDay News) -- Taking popular antidepressant drugs around the time of surgery may increase risks associated with the procedure, including bleeding, the need for a blood transfusion, hospital readmission and even death, a large new study suggests.
Researchers analyzed medical records for more than half a million people who had surgery at 375 U.S. hospitals between 2006 and 2008. The investigators found that patients who were taking a type of antidepressant known as selective serotonin reuptake inhibitors (SSRIs), such as Prozac (fluoxetine) and Paxil (paroxetine), were 10 percent more likely to experience a complication after surgery than those not taking an SSRI.
The findings appear online April 29 in the journal JAMA Internal Medicine.
The study only showed an association between SSRI use and surgical risks -- it did not show that these medications cause bleeding or any other complication. In addition, patients on antidepressants might be more likely to have other risk factors for surgical complications, apart from the medications themselves, the researchers pointed out.
Exactly how or even if SSRIs may increase risks associated with surgery is also not fully understood. These drugs may interfere with the way blood platelets function. Without sufficient platelet activity, blood doesn't clot correctly and excessive bleeding can occur, the study authors suggested.
Still, the findings do not mean that people who are taking these drugs should stop taking them before surgery.
"We don't know how, if, or when it is best to stop," said study author Dr. Andrew Auerbach, a professor of medicine at the University of California, San Francisco.
"If you and your doctor feel it is safe to stop taking Paxil, Prozac or another SSRI before your surgery, it may not be unreasonable to do so," Auerbach said. "It is an individual decision at
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