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Postoperative Delirium More Likely in Elderly surgical Patients Who Have Diabetes

by Bidita Debnath on October 15, 2013 at 11:50 PM
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 Postoperative Delirium More Likely in Elderly surgical Patients Who Have Diabetes

Elderly surgical patients are more likely to suffer from debilitating post-operative delirium if they have diabetes, undergo longer surgery or respond poorly to stress.

This is according to a study presented at the ANESTHESIOLOGY 2013 annual meeting. The research could help doctors prevent postoperative delirium, which can lead to longer hospital stays, poor recovery and higher death rates.


As the country's population ages, identifying patients at high-risk for developing postoperative delirium is increasingly important. The incidence of postoperative delirium ranges from two to 33 percent in elderly patients undergoing major surgery, depending on the patient's risk factors and the degree of operative stress. Patients who have postoperative delirium can suffer from fluctuating inattention, disorientation, lethargy, agitation and combative behavior.

"In addition to how disturbing this complication is for patients and their families, it's also associated with death during surgery and increased medical costs," said Stacie G. Deiner, M.D., associate professor in the Department of Anesthesiology, Geriatrics and Palliative Care, and Neurosurgery at the Icahn School of Medicine at Mount Sinai, New York. "Studies have shown that patients with postoperative delirium have two to five times the risk of major complications including death. To be able to identify, predict or understand the mechanism of postoperative delirium could help us identify ways to prevent it."

In the study, 76 patients 68 years or older having major non-cardiac surgery had cognitive testing. The patients were assessed daily using the Confusion Assessment Method and the Mini Mental Status Exam. Blood was collected and tested for cortisol, epinephrine and norepinephrine hormone levels before surgery, just before removing the breathing tube used during surgery and two hours after surgery.

The study found that higher peak stress response levels (also known as the adrenal response) two hours after the start of surgery, diabetes and the length of the surgery were highly predictive of postoperative delirium.

"By understanding who may be at high risk for postoperative delirium, we can work on interventions for these patients, such as considering giving them antipsychotic medications before surgery, carefully monitoring the depth of anesthesia, and/or having patients see a geriatrics specialist prior to surgery," said Dr. Deiner.

The American Society of Anesthesiologists
Founded in 1905, the American Society of Anesthesiologists (ASA) is an educational, research and scientific society with more than 50,000 members organized to raise and maintain the standards of the medical practice of anesthesiology. ASA is committed to ensuring physician anesthesiologists evaluate and supervise the medical care of patients before, during and after surgery to provide the highest quality and safest care every patient deserves.

Source: Newswise

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