Hi,
For the Carotid Massage, I second Ireneo's comment, I do not believe that the maneuver is recommended for the lay person, such as most of us are. My wife says that she has seen, only on a few occasions, the Doctors that she has worked for doing the Carotid Massage.
From one site, representative of many that I saw: "A variety of methods have been used to interrupt attacks, and patients may learn to perform these themselves.