Factors affecting the cold transfer during cryotherapy.

Cryotherapy of the cervix was made in 40 patients for chronic cervicitis, and the thickness of the ice zone around the probe was measured in function of treatment time, under standard cooling conditions. The pace of growth of the ice zone allowed the author to draw conclusions as to the conductivity of the studied tissue. It was established that in the study-group, the patient's age and their histories of abortions did not influence the cold transfer significantly. The difference between the average values of ice zone thickness measured in the groups of nulliparae and multiparae was, however, significant. Findings have shown that the spread of cold in the cervical tissue in nulliparous women is better than in multiparae and so a greater efficacy of cryotherapy can be expected in nulliparae.