Abstract Title:

Evaluation of cranberry tablets for the prevention of urinary tract infections in spinal cord injured patients with neurogenic bladder.

Abstract Source:

Spinal Cord. 2008 Sep;46(9):622-6. Epub 2008 Apr 8. PMID: 18392039

Abstract Author(s):

M J Hess, P E Hess, M R Sullivan, M Nee, S V Yalla

Article Affiliation:

Department of Spinal Cord Injury, VA Boston Health Care System, West Roxbury, MA, USA. [email protected]


STUDY DESIGN: Randomized, double blind, placebo-controlled trial with a crossover design.OBJECTIVE: To evaluate cranberry tablets for the prevention of urinary tract infection (UTI) in spinal cord injured (SCI) patients. SETTING: Spinal Cord Injury Unit of a Veterans Administration Hospital, MA, USA. METHODS: Subjects with spinal cord injury and documentation of neurogenic bladder were randomized to receive 6 months of cranberry extract tablet or placebo, followed by the alternate preparation for an additional 6 months. The primary outcome was the incidence of UTI. RESULTS: Forty-seven subjects completed the trial. We found a reduction in the likelihood of UTI and symptoms for any month while receiving the cranberry tablet (P<0.05 for all). During the cranberry period, 6 subjects had 7 UTI, compared with 16 subjects and 21 UTI in the placebo period (P<0.05 for both number of subjects and incidence). The frequency of UTI was reduced to 0.3 UTI per year vs 1.0 UTI per year while receiving placebo. Subjects with a glomerular filtration rate (GFR) greater than 75 ml min(-1) received the most benefit. CONCLUSION:Cranberry extract tablets should be considered for the prevention of UTI in SCI patients with neurogenic bladder. Patients with a high GFR may receive the most benefit. SPONSORSHIP: Spinal Cord Research Foundation, sponsored by the Paralyzed Veterans of America.

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