Ear points for analgesia in labour

This Saturday I was helping a friend in labour. It was the kind of night you can never tell anyone about because you are either there or you are not. I did these ear acupuncture points. She had a super fast delivery. I got to the hospital at 1.30am and the baby was out by 3.30am. It was her second child. A fantastic experience :-) 

A number of research trials have investigated acupuncture analgesia in labour, with varying methodologies, point selections and results. One trial examined the effect of electro-acupuncture on 168 women, using the ear points Shenmen, and LI4 bilaterally for either 20 or 30 minutes. It was found that the analgesic effect began at a mean of 40 minutes after application, and that its duration was a mean of six hours. It was not necessary to use analgesic drugs of any kind with any of those who delivered during this period of time. 

Source: Giovanni Maciocia, Obstetrics & Gnyecology in Chinese Medicine