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Spinal Cord. 2008 Sep;46(9):622-6. doi: 10.1038/sc.2008.25. Epub 2008 Apr 8.

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

Author information

  • 1Department of Spinal Cord Injury, VA Boston Health Care System, West Roxbury, MA, USA. Marika.hess@med.va.gov

Abstract

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.

PMID:
18392039
[PubMed - indexed for MEDLINE]
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