Waking up in the midst of surgery. According to Wikipedia, it "occurs in 20,000-40,000 patients out of the 20 million US surgeries performed each year." Yikes. From CNN:
When Carol Weiher was having her right eye surgically removed in 1998, she woke up hearing disco music. The next thing she heard was "Cut deeper, pull harder."
She desperately wanted to scream or even move a finger to signal to doctors that she was awake, but the muscle relaxant she'd received prevented her from controlling her movements.
"Awake during surgery: 'I'm in hell'"
