Studies comparing aggressive hydration with lactate Ringer plus indomethacin: study protocol design

Author (country, year) [ref]Study designIntervention protocolComparisonType of NSAIDsNumber ptsFemale gender (%)Patient related PEP riskExclusion criteria
Mok et al. (USA, 2017) [47]RCT (1:1:1:1), monocentreLR + indomethacin (infusion protocol not available)a. Standard NSS + placebo
b. NSS + rectal indomethacin
c. LR + placebo
Indomethacin 100 mg48 per group48 vs. 60 vs. 69 vs. 73Average and high riskFluid overload increased risk*
Active peptic ulcer
Electrolyte alterations
Pregnancy
Age < 18 yrs
Ampullectomy
Hajalikhani et al. (Iran, 2018) [48]RCT (1:1), monocentre3.0 mL/(kg h) during and for 8 h after ERCP, bolus of 20 mL/kg immediately after the procedure + diclofenacStandard hydration [LR 1.5 mL/(kg h) during and for 8 h after ERCP, without bolus] + rectal diclofenacDiclofenac 100 mg107 intervention group
112 control group
53.3 vs. 49.1Average and high riskGastrointestinal bleeding
Fluid overload increased risk*
Pregnancy
Age < 18 and > 70 yrs
Thanage et al. (India, 2021) [49]RCT (1:1:1), monocentre3.0 mL/(kg h) during and for 8 h after ERCP, bolus of 20 mL/kg immediately after the procedure + diclofenaca. Aggressive hydration with LR (same infusion protocol)
b. Rectal diclofenac
Diclofenac 100 mg57 per group52.6 vs. 43.8 vs. 63.1High riskAcute pancreatitis
Fluid overload increased risk*
Active peptic ulcer
Pregnancy
Age < 18 yrs
Boal Carvalho et al. (Portugal, 2022) [50]RCT (1:1), monocentre3.0 mL/(kg h) during and for 8 h after ERCP, bolus of 20 mL/kg immediately after the procedure + indomethacin at the end of ERCPStandard hydration [LR 1.5 mL/(kg h) during and for 8 h after ERCP, without bolus] + indomethacin at the end of ERCPIndomethacin 100 mg83 intervention group
72 control group
53 vs. 48.6Average riskPrevious ERCP
Low risk of PEP
Acute pancreatitis
Fluid overload increased risk*
Electrolyte alterations
Age < 18 yrs
Post-surgical anatomy
Sperna Weiland et al. (Netherlands, 2021) [51]RCT (1:1), multicentreBolus of 20 mL/kg within 60 min from the start of ERCP, followed by 3 mL/(kg h) for 8 h + rectal diclofenacNSS with a maximum of 1.5 mL/(kg h) and 3 L per 24 h + rectal diclofenacDiclofenac 100 mg388 intervention group
425 control group
60 vs. 59Average and high riskPrevious ERCP
Pancreatic head mass
Acute pancreatitis
Chronic pancreatitis
Sepsis
Fluid overload increased risk*
Active GI bleeding
Electrolyte alterations
Age < 18 and > 85 yrs
Pregnancy
Post-surgical anatomy

*: Cardiac, hepatic, respiratory or renal insufficiency/severe disease; ERCP: endoscopic retrograde cholangiopancreatography; LR: lactated Ringer’s; NSAIDs: non-steroidal anti-inflammatory drugs; NSS: normal saline solution; PEP: post-ERCP acute pancreatitis; pts: patients; RCTs: randomized controlled trials; yrs: years