lights out of people who are having a restorative afternoon kip.
So I was in the operating theatre recently, watching them put a tube through the abdominal wall of a patient and into his stomach. It was being done not under a general anaesthetic, but under some light sedation like you'd have for a colonoscopy along with plenty of local for his tummy. Halfway through, the patient started to become unresponsive and tachycardic. The anaesthetist leaned over and gave him a sternal rub. A sternal rub is a painful grind of the knuckles along the sternum that you'd do to determine if someone is capable of responding to a stimulus. And then the anaesthetic nurse, who was watching the monitor, said, "VF".
VF. Ventricular fibrillation. Cardiac arrest. Witnessed. Monitored. I wound up my arm to deliver the praecordial thump. I filled my lungs to give the great kiai to project my life-saving Qi into the patient's heart. I anchored my feet, bracing my hips to the earth so as not to be driven back through the wall of the theatre by the concussion. "Hyyyyyyyaaaaaaa......"
And the anaesthetist calmly said, "Nah it's just an artifact from me jiggling the ECG dots on his chest." And sure enough he was fine.