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  • Title: Lower urinary tract changes in young adults using ketamine.
    Author: Mak SK, Chan MT, Bower WF, Yip SK, Hou SS, Wu BB, Man CY.
    Journal: J Urol; 2011 Aug; 186(2):610-4. PubMed ID: 21684556.
    Abstract:
    PURPOSE: We identified the profile of lower urinary tract changes in ketamine users in the community. In addition, we identified the relative risks of dose, frequency of ingestion and duration of ketamine use for changes in lower urinary tract function. MATERIALS AND METHODS: A mobile medical assessment service was established at specific youth centers, and subjects who were known to social workers and who had a history of ketamine use were invited to participate in health screening. Lower urinary tract function was evaluated using the Pelvic Pain, Urgency and Frequency questionnaire, and uroflowmetry and ultrasonography. RESULTS: Use of ketamine more than 3 times weekly was significantly associated with lower voided volumes. Pelvic Pain, Urgency and Frequency questionnaire scores were significantly higher for ketamine use for more than 24 months compared to use for short durations (7.82 vs 6.00). The scores on the symptom and bother subscales of the Pelvic Pain, Urgency and Frequency questionnaire decreased progressively with increased duration of abstinence. For individuals after 1 year of abstinence the Pelvic Pain, Urgency and Frequency questionnaire scores were significantly lower and voided volumes were higher than those for active users. CONCLUSIONS: Ketamine users with at least a 2-year habit of 3 or more hits per week have altered bladder function that can be recognized and that causes bother. These early functional changes have the potential to normalize after 1 year of ketamine abstinence. This study provides a basis for the development of health promotion material that can be used in the community by welfare workers seeking to encourage drug cessation.
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