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Memory master anesthesia1/1/2023 ![]() ![]() She recommends physicians and family members carefully monitor patients after surgery for any signs of memory loss. Anesthetics likely compound these issues," says Orser. Loss of sleep, new environments and medications can all impact a patient's mental function. "There's a lot going on after surgery, which can alter our ability to think clearly. These results suggest the same effect can impact a patient's learning and memory during a time when they are receiving critical information about their care. In the study - led by PhD candidate Agnes Zurek - the team gave healthy male mice a low dose of anesthetic for just 20 minutes and found that receptor activity was increased for a week afterwards. Our research shows that our fundamental assumption about how these drugs work is wrong," says Orser, a Professor in the Departments of Anesthesia and Physiology, and anesthesiologist at Sunnybrook Health Sciences Centre. "Patients - and even many doctors - think anesthetics don't have long-term consequences. Professor Beverley Orser and her team found that the activity of memory loss receptors remains high long after the drugs have left the patient's system, sometimes for days on end.Īnimal studies showed this chain reaction has long-term effects on the performance of memory-related tasks. One-tenth of patients still suffer cognitive impairments three months later.Īnesthetics activate memory-loss receptors in the brain, ensuring that patients don't remember traumatic events during surgery. Until now, scientists haven't understood why about a third of patients who undergo anesthesia and surgery experience some kind of cognitive impairment - such as memory loss - at hospital discharge. ![]()
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