Published online by Cambridge University Press: 10 September 2020
Over the ages, clinicians have tried to decipher the mysteries of the human body by exploiting natural openings to examine the internal aspects of organs. Since as far back as Hippocrates, a variety of instruments have been employed to achieve this. The simplest form of instrument is a speculum, used to augment natural openings and allow ambient light to illuminate the inner aspect of organs for inspection by the naked eye. While this may be helpful for examining the nostrils or the vagina, for example, it is not an adequate approach for a well-concealed organ such as the uterus. Accurate endoscopic examination of the endometrial cavity, i.e. hysteroscopy, requires the transmission of light into and out of a cavity. Since the endometrial cavity is a potential space, collapsed in the natural state, a distension medium is required to expand the field of vision.
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