Administering paracetamol during surgery may reduce the incidence of post-operative shivering, suggests a small Japanese study.
The study authors highlighted that chills and shivering were a common side effect in patients when they regained consciousness after surgery, with shivering occurring in up to half of patients.
“We believe our findings can be widely applicable”
While the exact cause was unknown, the researchers said it was believed that it may be related to the body cooling down.
They noted that paracetamol – also sometimes called acetaminophen – was being used more and more pre- and post-operatively in an effort to control pain and to minimise the use of opioids.
However, until now, few studies have evaluated the ability of acetaminophen to prevent post-operative shivering, they said at a conference hosted by American Society of Anesthesiologists.
Their study included 37 patients scheduled for gynaecologic surgery. They received paracetamol (15mg per kg of body weight) intravenously, or a placebo, after receiving a general anaesthetic.
Among the women who received paracetamol, 22.2% experienced post-operative shivering, compared to 73.7% of those who received the placebo, said the researchers.
Additionally, the severity of shivering was significantly lower among women who received the drug, said the authors who presented their findings at the Anesthesiology 2017 annual meeting in Boston.
Body temperature was significantly lower 30 minutes after researchers began their post-operative observation in the recovery room among patients who received paracetamol compared to placebo.
Lead researcher Dr Takahiro Tadokoro, from the University of the Ryukyus in Okinawa, said: “Post-operative shivering is a frequent complication in patients recovering from general anaesthesia. It causes significant pain and discomfort.
“Post-operative shivering can also put a strain on the cardiovascular system, therefore, we need to prevent it, especially in patients with cardiopulmonary risk,” he said,
“We believe our findings can be widely applicable, as acetaminophen is a relatively safe drug and commonly used,” he added.