AI Article Synopsis
- Pancreatitis is a serious complication of endoscopic retrograde cholangiopancreatography (ERCP), occurring in about 10% of cases, prompting research into the efficacy of allopurinol for prevention.
- Six randomized controlled trials involving 1,974 participants were analyzed, revealing no clear benefit of allopurinol in reducing the incidence of post-ERCP pancreatitis compared to a placebo, despite some noted heterogeneity in results.
- Overall, the study concluded that prophylactic allopurinol does not effectively prevent post-ERCP pancreatitis, regardless of dosage or timing, indicating a need for further research on the topic.
Article Abstract
Background: Pancreatitis is the most common complication of endoscopic retrograde cholangiopancreatography (ERCP) which can be severe and cause death in approximately 10% of cases. Up to now, six randomized controlled trials (RCTs) have been found relevant to the effect of allopurinol on prevention of Post-ERCP pancreatitis (PEP). However, these results remained controversial.
Objective: To conduct a meta-analysis with RCTs published in full text to determine the effectiveness of prophylactic allopurinol of different dosages and administration time in the incidence and severity of PEP.
Methods: Literature search was performed in PubMed, Embase, Web of Science and Cochrane Library from databases inception to May 2014. RCTs comparing the effect of allopurinol with placebo on prevention of PEP were included. Statistical heterogeneity was quantitatively evaluated byχ2 test with the significance set P<0.10 or I2>50%.
Results: Six RCTs consisting of 1974 participants were eventually included. The incidences of PEP in allopurinol group and placebo group were 8.4%(83/986) and 9.9%(98/988) respectively. Meta-analysis showed no evident prevention effect of allopurinol on the incidence of PEP (RR 0.75, 95%CI 0.39-1.42) with significant heterogeneity (I2 = 70.4%, P = 0.005). When studies were stratified according to the dosages and administration time of allopurinol they applied, there was still no evident prevention effect of allopurinol on mild, moderate or severe PEP. However, statistically substantial heterogeneity was presented in the subgroup of moderate PEP when the effect of high dose of allopurinol was analyzed (Imoderate2 = 82.3%, Pmoderate = 0.018). Statistically significant heterogeneity was also observed in subgroup of mild PEP, when the effect of long adminstration time of allopurinol was investigated (Imild2 = 62.8%, Pmild = 0.068).
Conclusion: The prophylactic use of allopurinol in different dosages and administration time had no effect in preventing incidence and severity of PEP.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4159328 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0107350 | PLOS |
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