[A comparative study of contact media for defibrillation]

In DC-conversion, the transthoracic resistance is of significance for the amount of energy which influences the myocardium with the object of convertering ventricular fibrillation to sinus rhythm. It is therefore of significance that contact between the thorax and the electrodes of the defibrillator is optimal. Investigation of the contact media (Litmann and Nikman) compared with electrode gel did not reveal any difference in total impedance (thoracic impedance + 2 x transition impedance) (p = 0.001). On employing defibrillation out of hospital, it was definitely advantageous that the contact medium could be stuck to the patient's thorax, not only on alternation between cardiac massage and DC-shock but also during transport.