[Determination of the fertile period during the menstrual cycle in women by monitoring changes in crystallization of saliva with the PC2000 IMPCON minimicroscope].
The authors tested the possibility of assessment of fertile and infertile days during the menstrual cycle by investigating the crystallization of saliva by means of a minimicroscope PC 2000 IMPCON. They followed up for five months a total of 58 women where they assessed by a combination of at least three classical examination methods ovulatory and anovulatory cycles. They monitored a total of 120 cycles and examined 1649 specimens of saliva. Some women had to be eliminated on account of virosis during a flu epidemic (a total of 11 cycles). During the periovulatory period the authors recorded in ovulatory cycles the foreseen crystalline structures in saliva in 78.57%. In anovulatory cycles agreement between the expected character of the saliva specimen and anovulation was found in 84% of the examined cycles. In addition to structures suggesting fertile or infertile days, the authors identified also intermediary types. In the discussion the authors analyze various aspects as regards evaluation of the correlation between salivary and serum levels of gonadotropins and ovarian steroids. They evaluate physical and chemical changes of saliva and vaginal secretion and discuss the problem of crystallization of the saliva during the menstrual cycle. Based on their findings, when testing the minimicroscope PC 2000, they supplement the list of factors with influence the results of examinations. They consider PC 2000 a suitable modern equipment which extends the range of contraceptives and at the same time helps to assess the optimal time for conception in planned pregnancies.