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1.
BMC Gastroenterol ; 14: 60, 2014 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-24694003

RESUMO

BACKGROUND: Ajmaline is a pharmaceutical agent now administered globally for a variety of indications, particularly investigation of suspected Brugada syndrome. There have been previous reports suggesting that repetitive use of this agent may cause severe liver injury, but little evidence exists demonstrating the same effect after only a single administration. CASE PRESENTATION: A 33-year-old man of Libyan origin with no significant past medical history underwent an ajmaline provocation test for investigation of suspected Brugada syndrome. Three weeks later, he presented with painless cholestatic jaundice which peaked in severity at eleven weeks after the test. Blood tests confirmed no evidence of autoimmune or viral liver disease, whilst imaging confirmed the absence of biliary tract obstruction. A liver biopsy demonstrated centrilobular cholestasis and focal rosetting of hepatocytes, consistent with a cholestatic drug reaction. Over the course of the next few months, he began to improve clinically and biochemically, with complete resolution by one year post-exposure. CONCLUSION: Whilst ajmaline-related hepatotoxicity was well-recognised in the era in which the drug was administered as a regular medication, clinicians should be aware that ajmaline may induce severe cholestatic jaundice even after a single dose administration.


Assuntos
Ajmalina/efeitos adversos , Doença Hepática Induzida por Substâncias e Drogas/etiologia , Icterícia Obstrutiva/induzido quimicamente , Bloqueadores do Canal de Sódio Disparado por Voltagem/efeitos adversos , Adulto , Síndrome de Brugada/diagnóstico , Doença Hepática Induzida por Substâncias e Drogas/patologia , Humanos , Icterícia Obstrutiva/patologia , Masculino , Índice de Gravidade de Doença
2.
BMJ Open Qual ; 8(3): e000546, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31428704

RESUMO

BACKGROUND: Inflammatory bowel disease (IBD) is a chronic relapsing-remitting condition affecting 600 000 people in the UK. Traditionally, patients attend outpatient clinics for monitoring regardless of their symptoms or risk of developing complications. This can lead to a mismatch between need and access: patients in remission given elective appointments displace those in need of urgent specialist attention. Novel initiatives implemented in the UK to improve outpatient monitoring have often required a well-maintained patient registry, empowered patients and significant information technology support. DESIGN AND STRATEGY: In this large-scale quality improvement project at St Mark's Hospital, a tertiary centre for IBD, we stratified over 1000 patients attending three non-complex IBD clinics over 12 months according to disease activity and risk profile. The aim was to offer a choice and subsequently transfer 50% of eligible patients to specialist nurse-led telephone clinics and demonstrate non-inferior satisfaction levels to existing outpatient follow-up. We also sought to ensure there was timely access to a newly established rapid access clinic for patients requiring urgent specialist attention.A core project team consisting of healthcare professionals, patients and quality improvement scientists met regularly. The team tested and scaled up interventions using 'Plan-Do-Study-Act' cycles within the 'Model for Improvement' framework and analysed data continuously using statistical process charts. RESULTS: Over 12 months, the average number of eligible patients transferred to telephone clinics rose from 17.6% (42/239) using a questionnaire method to 59.3% (73/123) using active discussion in clinic. Patient satisfaction scores remained high and non-inferior to baseline scores in face-to-face clinics. The median waiting time to be seen in the rapid access clinic was 6.5 days. CONCLUSION: This is the first published study to report on the successful stratification of patients with IBD based on disease activity and risk of complications to create a more responsive, sustainable and patient-centred model for IBD monitoring.

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