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Vaginal blood flow during sexual stimulation
Obstetrics and Gynecology
|November 1, 1980
Summary
This study measured vaginal blood flow (VBF) in women using xenon 133 washout. Sexual stimulation significantly increased VBF, highlighting its role in female physiological response.
Area of Science:
- Physiology
- Gynecology
- Medical Imaging
Background:
- Understanding local vaginal blood flow (VBF) is crucial for assessing female sexual function and health.
- Previous methods for measuring VBF have limitations in accuracy and invasiveness.
Purpose of the Study:
- To quantify resting and sexually stimulated vaginal blood flow in female volunteers.
- To evaluate the utility of xenon 133 washout for measuring VBF.
Main Methods:
- Seven female volunteers underwent intraepithelial injection of the radioactive inert gas xenon 133.
- Local vaginal blood flow was calculated based on the washout kinetics of xenon 133.
- Measurements were taken at rest and during sexual stimulation.
Main Results:
- At rest, the average vaginal blood flow (VBF) was 9.8 ml/min/100g (range: 5.5-19.6).
- During sexual stimulation, VBF increased significantly to an average of 28.9 ml/min/100g (range: 21.5-45.0).
Conclusions:
- Xenon 133 washout is a viable method for measuring local vaginal blood flow.
- Sexual stimulation leads to a substantial increase in vaginal blood flow, indicating its physiological relevance.