PubMed · 12155569
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1968. Plastic condoms.. https://pubmed.ncbi.nlm.nih.gov/12155569/
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Sexual transmission of the human immunodeficiency virus (HIV) continues to pose a public health problem worldwide. Men who have sex with men are still at differential risk of infection. Although there is evidence to claim that HIV can be transmitted by oral sex, the perception of this risk is ambiguous and relates paradoxically to behavior change. New models of risk perception must be developed in various areas of knowledge to obtain a fuller understanding of this phenomenon.
Brief acts of unprotected anal sex (i.e.'dipping') have not been systematically measured in AIDS research. Eleven per cent of HIV-positive men who reported that they had not engaged in any unprotected insertive anal intercourse with an HIV-negative or unknown status partner reported that they did engage in insertive 'dipping'. Men reported 'dipping' an average of 5.1 times, representing 773 acts of insertive intercourse that would have been missed by traditional methods of sexual data behavior.
OBJECTIVES: To report on the applicability, reproducibility, and adverse events of the noninvasive condom catheter method in the first 730 subjects of a longitudinal survey of changes in urinary bladder contractility secondary to benign prostatic hyperplasia, in which 1300 men will be evaluated three times in 5 years using this method. METHODS: Subjects were recruited by general practitioners, general publicity, and e-mail. Only those meeting the study criteria were entered in the study. If the free flow rate exceeded 5.4 mL/s, at least two consecutive condom pressure measurements were attempted using the condom catheter method. The condom pressure measured reflected the isovolumetric bladder pressure, a measure of urinary bladder contractility. The reproducibility of the method was quantified by a difference plot of the two maximal condom pressures measured in each subject. RESULTS: In 618 (94%) of 659 eligible participants, one condom pressure measurement was completed; two measurements were done in 555 (84%). The maximal condom pressure ranged from 28 to 228 cm H2O (overall mean 101, SD 34). A difference between the two pressures of less than +/-21 cm H2O was found in 80%. The mean difference was -1 cm H2O (SD 18), significantly different from 0. Some adverse events such as terminal self-limiting hematuria were encountered. CONCLUSIONS: The condom catheter method is very suitable for large-scale use. It has a success rate of 94% and a reproducibility comparable to that of invasive pressure flow studies.