The tubal insufflation test was performed in a series of fifty-five patients, average age 27 years and average duration of marriage four years, who had never been, pregnant. In most cases, the test was repeated several times. Twenty-eight were positive, i. e., the tubes were patent, and twenty-two negative. In five cases that were negative at the first test, patency was demonstrated in subsequent tests. In other words, 40 per cent. of the primary sterility cases showed closed tubes that were an absolute bar to conception.
In twenty-four of the thirty-three cases in which the tubes were patent or became patent, the semen was examined. In sixteen, there were numerous actively motile, well-formed spermatozoa; while in eight, there were either no spermatozoa or a very few nonmotile bodies.
The insufflation test is made according to the original Rubin technic. Carbon dioxid gas is employed because it is quickly absorbed; and
Brandt ML. THE RUBIN TUBAL INSUFFLATION TEST IN PRIMARY STERILITY. JAMA. 1923;80(6):398. doi:10.1001/jama.1923.26430330002015a
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