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Herbal products may cause unexpected bleeding in surgical patients
ATLANTA (CNN) -- Anesthesiologists are concerned that patients undergoing surgery may risk unexpected bleeding and difficulty in blood clotting when they take ginseng, gingko biloba and other herbs within two weeks of their operations.
The familiar question before surgery, "Are you taking any medications?" should be augmented with: "Are you taking any herbal remedies?" suggests Dr. John Neeldt, president of the American Society of Anesthesiologists.Although no scientific studies have been completed to prove a link between use of herbs and complications during anesthesia, there have been anecdotal reports.
Neeldt said reports circulate among anesthesiologists of "adverse responses to blood pressure and pulse -- unexpectedly brisk bleeding and not clotting well in patients who were taking these products."
Feverfew, ginseng, gingko biloba, ginger, ephedra and garlic may adversely affect bleeding and blood pressure, according to Dr. Jessie Leak, an anesthesiologist with the M.D. Anderson Cancer Center in Houston, Texas.
St. John's wort, valerian and kava kava may prolong the effects of some anesthetics and impair awakening from anesthesia, said Leak, who has been investigating the potential complications that could arise from specific herbal products.
"Ultimately, the responsibility does fall upon the patient to let us know what you are taking," Leak said. "Certainly, if we ask and you fail to tell us, then ... your safety may be compromised."
To increase awareness of these concerns, the American Society of Anesthesiologists is distributing educational brochures to doctors and patients. A spokesperson for the American Herbal Products Association said patients should inform their physicians of herbal use.CNN Medical Correspondent Rhonda Rowland contributed to this report.
Growing your medicine chest
American Society of Anesthesiologists
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