Aviation, space, and environmental medicine · 2000
Urinary continence in women during centrifuge exposure to high +Gz.
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Benjamin C R, Hearon C M
Аннотация
BACKGROUND: One earlier study and anecdotal evidence suggest a possible association between exposure to high +Gz forces and urinary incontinence in women. High +Gz could possibly contributes to the prolapse of the bladder neck, moving it into a position which decreases the leak point pressure resulting in urinary incontinence.
HYPOTHESIS: We tested the hypothesis that increased urinary incontinence is associated with high +Gz.
METHODS: 25 females were exposed to a high +Gz profile. Following the exposure they were asked to answer a questionnaire grading their urinary continence under high +Gz, and to provide a baseline grading of their urinary continence at +1.0 Gz and under increased abdominal stress at +1.0 Gz. Demographic data included parity and previous urogenital surgery. Graded responses were dichotomized and data was analyzed using Fischer's Exact Test for 2x2 tables with significance set at alpha = 0.05.
RESULTS: At high +Gz no significant association was found between reported urine incontinence and a history of urogenital surgery or parity. Only one of twenty-five subjects had any symptoms at high +Gz despite the fact that five had a predisposition. As expected, at +1.0 Gz and under increased abdominal stress at +1.0 Gz a significant association was found between reported urine incontinence and a history of urogenital surgery, while no significant association was found for parity.
CONCLUSIONS: In this simple first look there was no increase in urinary incontinence at high +Gz even among those who reported a predisposition.
HYPOTHESIS: We tested the hypothesis that increased urinary incontinence is associated with high +Gz.
METHODS: 25 females were exposed to a high +Gz profile. Following the exposure they were asked to answer a questionnaire grading their urinary continence under high +Gz, and to provide a baseline grading of their urinary continence at +1.0 Gz and under increased abdominal stress at +1.0 Gz. Demographic data included parity and previous urogenital surgery. Graded responses were dichotomized and data was analyzed using Fischer's Exact Test for 2x2 tables with significance set at alpha = 0.05.
RESULTS: At high +Gz no significant association was found between reported urine incontinence and a history of urogenital surgery or parity. Only one of twenty-five subjects had any symptoms at high +Gz despite the fact that five had a predisposition. As expected, at +1.0 Gz and under increased abdominal stress at +1.0 Gz a significant association was found between reported urine incontinence and a history of urogenital surgery, while no significant association was found for parity.
CONCLUSIONS: In this simple first look there was no increase in urinary incontinence at high +Gz even among those who reported a predisposition.