ST. LOUIS (AP) — For surgery patients who appear sedated but are awake for their operation, the consequences can be serious.
Researchers in St. Louis say a common method used to prevent what’s known as anesthesia awareness should be re-examined.
The St. Louis Post-Dispatch reports that between one in 500 and one in 1,000 surgery patients remember pain, feeling paralyzed or hearing something stressful. Some need psychological help or even develop post-traumatic stress disorder.
Researchers from Washington University School of Medicine and two other universities looked at prevention methods in 6,000 high-risk surgical patients. They found that a device that monitors brain activity known as the bispectral index does little to ensure against anesthesia awareness.
Copyright 2011 The Associated Press