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  • Title: [Addition of ethanol to the distension medium in surgical hysteroscopy as screening to prevent "fluid overload". A prospective randomized comparative study of ablative versus non-ablative surgical hysteroscopy and different ethanol concentration].
    Author: Wallwiener D, Aydeniz B, Rimbach S, Fischer A, Conradi R, Bastert G.
    Journal: Geburtshilfe Frauenheilkd; 1996 Sep; 56(9):462-9. PubMed ID: 8991843.
    Abstract:
    For answering the question at which hysteroscopical procedures an intraoperative screening method is necessary to avoid a fluid overload and whether a beginning fluid absorption can be diagnosed early by adding ethanol to the distension medium, a prospectively randomised comparative study of ablative versus non-ablative operative hysteroscopy with differing ethanol concentrations was performed (n = 120). Purisole (a mannit/sorbit solution) was used a distension medium. The measuring parameters (breath alcohol, amount of absorbed fluid, haematocrit and haemoglobin values, central venous pressure, heart frequency) were intraoperatively determined at 5-minute intervals. The results of the study show that with those hysteroscopical procedures during which the endometrium is not or only minimally injured (e.g. syneciolysis, hysteroscopic proximal tubal catheterisation). Intraoperative screening is not necessary due to the low absorbing amounts. With hysteroscopical procedures such as resection of myoma, endometrium ablation and septum resection, however, an addition of ethanol of 2% to the distension medium has proved useful, because with this method absorption amounts of 400 ml and more can be detected by positive values of breath alcohol. As the result of a further absorption of fluid, delayed in time compared to the first positive value of breath alcohol, there is an increase in central venous pressure and hyponatraemia. Intraoperative ethanol monitoring is a non-invasive procedure which can be performed during ablative-operative hysteroscopies and has no negative influence on the course of the intervention and the general condition of the patients.
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