ERCP PERFORMANCE IN A TERTIARY BRAZILIAN CENTER: FOCUS ON NEW RISK FACTORS, COMPLICATIONS AND QUALITY INDICATORS.

BACKGROUND: ERCP can lead to complications, which can be prevented by the recognition of risk factors. AIM: To identify these risk factors, with quality evaluation. METHODS: Retrospective study in a Brazilian hospital in 194 patients, excluding surgically altered anatomy. RESULTS: 211 ERCPs were performed: 97.6% were therapeutic, 83.4% were started by trainees, with deep cannulation rate of 89.6%. Precut was needed in 16.6% of the ERCPs and classic sphincterotomy in 67.3%, with 75.4% of ductal clearance at single session and 8.0% of technical failure. Inacessible papillas ocurred in 2.5% of cases. There were 2.5% of late complications and 16% of early complications. Multivariate analysis identified six predictors for early complications: fistulotomy precut (OR=3.4, p=0.010), difficult cannulation (OR=21.5, p=0.002), attending's procedural time (OR=2.4, p=0.020), choledocholithiasis (adjusted OR=1.8, p=0.015), cannulation time (adjusted OR=3.2, p=0.018) and ERCP duration (adjusted OR=2.7, p=0.041). CONCLUSION: Six risk factors for post-ERCP complications were identified. ERCP duration and cannulation time are suggested as new potential quality indicators.

Ercp performance in a tertiary brazilian center: focus on new risk factors, complications and quality indicators / Performance de cpre em centro terciário brasileiro: foco em novos fatores de risco, complicações e indicadores de qualidade

ABSTRACT Background: ERCP can lead to complications, which can be prevented by the recognition of risk factors. Aim: To identify these risk factors, with quality evaluation. Methods: Retrospective study in a Brazilian hospital in 194 patients, excluding surgically altered anatomy. Results: 211 ERCPs were performed: 97.6% were therapeutic, 83.4% were started by trainees, with deep cannulation rate of 89.6%. Precut was needed in 16.6% of the ERCPs and classic sphincterotomy in 67.3%, with 75.4% of ductal clearance at single session and 8.0% of technical failure. Inacessible papillas ocurred in 2.5% of cases. There were 2.5% of late complications and 16% of early complications. Multivariate analysis identified six predictors for early complications: fistulotomy precut (OR=3.4, p=0.010), difficult cannulation (OR=21.5, p=0.002), attending's procedural time (OR=2.4, p=0.020), choledocholithiasis (adjusted OR=1.8, p=0.015), cannulation time (adjusted OR=3.2, p=0.018) and ERCP duration (adjusted OR=2.7, p=0.041). Conclusion: Six risk factors for post-ERCP complications were identified. ERCP duration and cannulation time are suggested as new potential quality indicators.

RESUMO Racional: A CPRE está associada a complicações, que podem ser prevenidas pelo reconhecimento de fatores de risco. Objetivo: Identificar tais fatores em nosso meio, com avaliação de qualidade. Métodos: Estudo retrospectivo em 194 pacientes de um hospital brasileiro, excluindo-se anatomia cirurgicamente alterada. Resultados: Executaram-se 211 CPREs: 97.6% foram terapêuticas, 83.4% iniciadas pelos residentes, com 89.6% de taxa de canulação profunda. Pré-corte foi necessário em 16.6% das CPREs e papilotomia clássica em 67.3%, com esvaziamento ductal de 74.5% em única sessão e 8.0% de falha técnica. Papilas inacessíveis ocorreram em 2.5% dos casos. Houve complicações tardias (2.5%) e precoces (16%). Em análise multivariada, identificaram-se seis preditores para complicações precoces: fistulotomia (RC=3.4, p=0.010), canulação difícil (RC=21.5, p=0.002), tempo do preceptor no procedimento (RC=2.4, p=0.020), coledocolitíase (RC ajustada=1.8, p=0.015), tempo de canulação (RC ajustada=3.2, p=0.018) e duração da CPRE (RC ajustada=2.7, p=0.041). Conclusão: Identificaram-se seis fatores para complicações pós-CPRE, sugerindo-se duração da CPRE e tempo de canulação como novos potenciais indicadores de qualidade.