Pain medicine

Vitamin C and catheter-related bladder discomfort after transurethral resection of bladder tumor: A double-blind, randomized, placebo-controlled study

J Clin AnesthPublished Randomised controlled trial

Primary resultResult — go to the resultRelative risk 0.426 95% CI 0.274–0.656

Authors' conclusion

Patients who received vitamin C had decreased CRBD and improved patient satisfaction following transurethral resection of bladder tumor.

Study context

Population
Patients undergoing transurethral resection of bladder tumor, university tertiary hospital
Participants
59 vs 59
Comparison
IV vitamin C 1 g vs normal saline after induction of anaesthesia
  • Vitamin Cn = 59
  • Controln = 59reference
Primary endpoint
Moderate or greater catheter-related bladder discomfort (CRBD)
Follow-up
Immediately postoperatively
Methodological detailsdouble-blind, placebo-controlled, single-centre
  • Double-blind
  • Placebo-controlled
  • Single-centre

Primary result

As reported in the abstract

Relative risk

0.426

95% CI 0.274–0.656

P < 0.001

Events by treatment group

Vitamin C vs Control
RR 0.426 (95% CI 0.274–0.656); P < 0.001

Secondary outcomes

Moderate or greater CRBD · 1 h postoperatively

P = 0.003

Moderate or greater CRBD · 2 h postoperatively

P = 0.008

OutcomeVitamin CControlP value
Patient satisfaction scoreSignificantly higher with vitamin C5.0 ± 1.34.4 ± 1.4P = 0.009

Moderate or greater catheter-related bladder discomfort (CRBD) · 6 h postoperatively

No significant difference

Original publication

Vitamin C and catheter-related bladder discomfort after transurethral resection of bladder tumor: A double-blind, randomized, placebo-controlled study. J Clin Anesth. Published 23 June 2023. doi:10.1016/j.jclinane.2023.111191

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