precordial

The 6 precordial leads are not possible, since they are measuring the voltage between an electrode on the chest and the mean of the 3 extremity electrodes.

… Part of the historical delay and confusion in recognizing heart attacks apparently lay in the Greek word, kardialgia, which could mean either abdominal or precordial pain.

Sounds like he administered a precordial thump.

In the days before routine pulse oximetry (which, in addition to measuring oxygenation of the blood, is proof of a pulse - it does not work on heart-lung bypass), the fact that the heart was beating was confirmed by using an esophageal or precordial stethoscope.

"Thumpversion" is more commonly called a "precordial thump", and there's very little evidence to support its use.

Precordial stethoscopes are a neat thing to see; they are just the "bell" part of a stethoscope made out of a decent-sized piece of metal so that the weight would keep it on the patient's chest and prevent it from moving around.

Commotio cordis (Latin, "agitation of the heart") is an often lethal disruption of heart rhythm that occurs as a result of a blow to the area directly over the heart (the precordial region), at a critical time during the cycle of a heart beat causing cardiac arrest.

"Thumpversion" is more commonly called a "precordial thump", and there's very little evidence to support its use.

Precordial stethoscopes are a neat thing to see; they are just the "bell" part of a stethoscope made out of a decent-sized piece of metal so that the weight would keep it on the patient's chest and prevent it from moving around.

Commotio cordis (Latin, "agitation of the heart") is an often lethal disruption of heart rhythm that occurs as a result of a blow to the area directly over the heart (the precordial region), at a critical time during the cycle of a heart beat causing cardiac arrest.