Objective: Review of distending media used in hysteroscopic surgery. Type of study: Overview. Setting: Institute for the Care of Mother and Child, Prague. Methods: Analysis of data from the literature. Results: The author reviewed the use of distendingmedia in hysteroscopic surgery with most serious complication - fluid overload syndrom. Conclusion: Fluid overload syndrome is a very dangerous and often underestimated complication during hysteroscopic surgery which needs immediate and appropriate management.

        Key words: hysteroscopy, embolisation, distension media, intravasation, fluid overload syndrome, hyponatremia