Israel Medical Association Journal

The use of ultrasound endovaginal probes is common practice in the fields of gynecology and obstetrics. The vagina serves as a host environment for many microorganisms, contributing greatly to its defensive mechanisms. It is not known whether the introduction of other microorganisms into the vaginal region are detrimental or require intensive preventative measures. Several national ultrasonography societies, as well as the Israel Ministry of Health, have addressed the proper and adequate handling of sonographic endovaginal probes, including the use of high-level disinfecting agents following cleansing and prior to using probe covers between patients. However, many obstetrics and gynecology ultrasound units in Israel find it difficult to adhere to these strict disinfecting requirements. While most of the guidelines are based on the theoretical risk of contaminations when ultrasound endovaginal probes are used, the rate of nosocomial infections linked to the use of these probes has yet to be verified. Based on the information available, there is an urgent need to find a solution that enables gynecological ultrasound users to properly disinfect endovaginal probes between patients. Currently, it is almost impossible to pragmatically adhere to the Israel Ministry of Health guidelines. 

Background: Nebulized hypertonic saline (HS) treatment is unavailable to large populations worldwide.

Objectives: To determine the bacterial contamination and electrolyte concentrations in homemade (HM-HS) vs. pharmacy made (PM-HS).

Methods: We conducted three double-blind consecutive trials: 50 boiled-water homemade 3%-HS (B-HM-HS) bottles and 50 PM-HS. The bottles were cultured after 48 hours. Electrolyte concentrations were measured in 10 bottles (5 per group). Forty bottles (20 per group) were distributed to volunteers for simulation of realistic treatment by drawing 4 ml HS three times daily. From each bottle, 4 ml samples were cultured after 1, 5, and 7 days. Volunteers prepared 108 bottles containing 3%-HS, sterilizing them using a microwave oven (1100–1850W). These bottles were cultured 24 hours, 48 hours, and 1 month after preparation.

Results: Contamination rates of B-HM-HS and PM-HS after 48 hours were 56% and 14%, respectively (P = 0.008). Electrolyte concentrations were similar: 3.7% ± 0.4 and 3.5% ± 0.3, respectively (P = NS). Following a single day of simulation B-HM-HS bottles were significantly more contaminated than PM-HS bottles: 75% vs. 20%, respectively (P < 0.01). By day 7, 85% of PM-HS bottles and 100% of B-HM-HS bottles were contaminated (P = 0.23). All 108 microwave-oven prepared bottles (MICRO-HS) were sterile, which was significantly better than the contamination rate of B-HM-HS and PM-HS (P < 0.001). Calculated risk for a consecutive MICRO-HS to be infected was negligible.

Conclusion: Microwave preparation provides sterile HS with adequate electrolyte concentrations, and is a cheap, fast, and widely available method to prepare HS.

Scientific journals are ethically bound to cite Professor Dr. Carl Clauberg's Nazi medical crimes against humanity whenever the eponym Clauberg is used. Modern articles still publish the eponym citing only the rabbit bioassay used in developing progesterone agonists or antagonists for birth control. Clauberg’s Nazi career is traced to his having subjected thousands of Jewish women at the Ravensbruck and Auschwitz-Birkenau death camps to cruel, murderous sterilization experiments that are enthusiastically described by incriminating letters (reproduced here) between him and the notorious Nazi Reichsführer-SS Heinrich Himmler. The experiments were carried out in women’s Block 10 in Auschwitz-Birkenau where Clauberg’s colleague Dr. Josef Mengele worked alongside. After Germany lost World War II in 1945 Mengele fled to South America, where he lived to an old age. Clauberg was caught by Russian soldiers, put on trial in the Soviet Union for his crimes against humanity, and imprisoned in 1948. In 1955 he was repatriated to Germany, once again imprisoned for his crimes, and belatedly expelled from the German Medical Association. To estimate the contemporary usage of the names Mengele and Clauberg, Internet hits were recorded for Clauberg C or Mengele J (with and without adding the term Auschwitz) with the Google and Scirus search engines. The ratios of hits for combinations of these terms reveal that relative to Mengele, Clauberg’s name is barely known. We propose that journals and books printing the eponym Clauberg cite its derivation and reference to the convicted Nazi criminal. The present article can serve for such citations.