Metaanalysis of randomized controlled trials of endoscopic retrograde cholangiography and endoscopic sphincterotomy for the treatment of acute biliary pancreatitis

Virender K. Sharma, Colin Howden

Research output: Contribution to journalArticle

160 Citations (Scopus)

Abstract

OBJECTIVE: Endoscopic retrograde cholangiography with endoscopic sphincterotomy (ERC+ES) has been advocated for the management of acute biliary pancreatitis. However, it is also viewed as dangerous. Our objective was to review published randomized, controlled trials (RCTs) of ERC + ES in patients with acute biliary pancreatitis and, by metaanalysis, to estimate the overall efficacy and safety of this approach. METHODS: We performed a fully recursive literature search for published RCTs of ERC+ES in gallstone- related acute pancreatitis. RCTs were pooled. Individual and overall mortality and complication rates were calculated, together with their 95% confidence intervals (CI), absolute risk reduction (ARR), relative risk reduction (RRR), and numbers needed to treat (NNT) for avoidance of complications or death. RESULTS: Four published RCTs had a numerically lower complication rate, and three had a numerically lower mortality rate, in the treated groups than in controls. After pooling, there were 460 treated patients and 374 controls. Complications occurred in 115 (25.0%) treated patients and 143 (38.2%) controls (z = 4.10; p < 0.001). Twenty-four treated patients (5.2%) and 34 controls (9.1%) died (z = 2.15; p < 0.05). ERC+ES had a 34.6% RRR for complications and a 42.9% RRR for death; ARR for complications and death was 13.2% (95% CI: 6.9-19.5%) and 3.9% (95% CI: 0.35- 7.45%), respectively. The NNT for avoidance of complications and death was 7.6 and 25.6, respectively. CONCLUSIONS: ERC+ES reduces morbidity and mortality in patients with acute biliary pancreatitis. Treating 26 such patients with ERC+ES is predicted to save one life.

Original languageEnglish (US)
Pages (from-to)3211-3214
Number of pages4
JournalAmerican Journal of Gastroenterology
Volume94
Issue number11
DOIs
StatePublished - Nov 1 1999
Externally publishedYes

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Endoscopic Sphincterotomy
Cholangiography
Pancreatitis
Numbers Needed To Treat
Randomized Controlled Trials
Risk Reduction Behavior
Confidence Intervals
Mortality
Therapeutics
Gallstones
Morbidity
Safety
Control Groups

All Science Journal Classification (ASJC) codes

  • Gastroenterology

Cite this

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title = "Metaanalysis of randomized controlled trials of endoscopic retrograde cholangiography and endoscopic sphincterotomy for the treatment of acute biliary pancreatitis",
abstract = "OBJECTIVE: Endoscopic retrograde cholangiography with endoscopic sphincterotomy (ERC+ES) has been advocated for the management of acute biliary pancreatitis. However, it is also viewed as dangerous. Our objective was to review published randomized, controlled trials (RCTs) of ERC + ES in patients with acute biliary pancreatitis and, by metaanalysis, to estimate the overall efficacy and safety of this approach. METHODS: We performed a fully recursive literature search for published RCTs of ERC+ES in gallstone- related acute pancreatitis. RCTs were pooled. Individual and overall mortality and complication rates were calculated, together with their 95{\%} confidence intervals (CI), absolute risk reduction (ARR), relative risk reduction (RRR), and numbers needed to treat (NNT) for avoidance of complications or death. RESULTS: Four published RCTs had a numerically lower complication rate, and three had a numerically lower mortality rate, in the treated groups than in controls. After pooling, there were 460 treated patients and 374 controls. Complications occurred in 115 (25.0{\%}) treated patients and 143 (38.2{\%}) controls (z = 4.10; p < 0.001). Twenty-four treated patients (5.2{\%}) and 34 controls (9.1{\%}) died (z = 2.15; p < 0.05). ERC+ES had a 34.6{\%} RRR for complications and a 42.9{\%} RRR for death; ARR for complications and death was 13.2{\%} (95{\%} CI: 6.9-19.5{\%}) and 3.9{\%} (95{\%} CI: 0.35- 7.45{\%}), respectively. The NNT for avoidance of complications and death was 7.6 and 25.6, respectively. CONCLUSIONS: ERC+ES reduces morbidity and mortality in patients with acute biliary pancreatitis. Treating 26 such patients with ERC+ES is predicted to save one life.",
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AU - Howden, Colin

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N2 - OBJECTIVE: Endoscopic retrograde cholangiography with endoscopic sphincterotomy (ERC+ES) has been advocated for the management of acute biliary pancreatitis. However, it is also viewed as dangerous. Our objective was to review published randomized, controlled trials (RCTs) of ERC + ES in patients with acute biliary pancreatitis and, by metaanalysis, to estimate the overall efficacy and safety of this approach. METHODS: We performed a fully recursive literature search for published RCTs of ERC+ES in gallstone- related acute pancreatitis. RCTs were pooled. Individual and overall mortality and complication rates were calculated, together with their 95% confidence intervals (CI), absolute risk reduction (ARR), relative risk reduction (RRR), and numbers needed to treat (NNT) for avoidance of complications or death. RESULTS: Four published RCTs had a numerically lower complication rate, and three had a numerically lower mortality rate, in the treated groups than in controls. After pooling, there were 460 treated patients and 374 controls. Complications occurred in 115 (25.0%) treated patients and 143 (38.2%) controls (z = 4.10; p < 0.001). Twenty-four treated patients (5.2%) and 34 controls (9.1%) died (z = 2.15; p < 0.05). ERC+ES had a 34.6% RRR for complications and a 42.9% RRR for death; ARR for complications and death was 13.2% (95% CI: 6.9-19.5%) and 3.9% (95% CI: 0.35- 7.45%), respectively. The NNT for avoidance of complications and death was 7.6 and 25.6, respectively. CONCLUSIONS: ERC+ES reduces morbidity and mortality in patients with acute biliary pancreatitis. Treating 26 such patients with ERC+ES is predicted to save one life.

AB - OBJECTIVE: Endoscopic retrograde cholangiography with endoscopic sphincterotomy (ERC+ES) has been advocated for the management of acute biliary pancreatitis. However, it is also viewed as dangerous. Our objective was to review published randomized, controlled trials (RCTs) of ERC + ES in patients with acute biliary pancreatitis and, by metaanalysis, to estimate the overall efficacy and safety of this approach. METHODS: We performed a fully recursive literature search for published RCTs of ERC+ES in gallstone- related acute pancreatitis. RCTs were pooled. Individual and overall mortality and complication rates were calculated, together with their 95% confidence intervals (CI), absolute risk reduction (ARR), relative risk reduction (RRR), and numbers needed to treat (NNT) for avoidance of complications or death. RESULTS: Four published RCTs had a numerically lower complication rate, and three had a numerically lower mortality rate, in the treated groups than in controls. After pooling, there were 460 treated patients and 374 controls. Complications occurred in 115 (25.0%) treated patients and 143 (38.2%) controls (z = 4.10; p < 0.001). Twenty-four treated patients (5.2%) and 34 controls (9.1%) died (z = 2.15; p < 0.05). ERC+ES had a 34.6% RRR for complications and a 42.9% RRR for death; ARR for complications and death was 13.2% (95% CI: 6.9-19.5%) and 3.9% (95% CI: 0.35- 7.45%), respectively. The NNT for avoidance of complications and death was 7.6 and 25.6, respectively. CONCLUSIONS: ERC+ES reduces morbidity and mortality in patients with acute biliary pancreatitis. Treating 26 such patients with ERC+ES is predicted to save one life.

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