Optimal treatment of acute cholecystitis Charlotte Susan Loozen OPTIMAL TREATMENT OF ACUTE CHOLECYSTITIS Thesis, Utrecht University, The Netherlands Copyright © by C. S. Loozen, 2017 Printed by Ipskamp printing ISBN 978-94-028-0704-2 The studies described in Chapter 2, Chapter 3 and Chapter 9 were financially supported by the St. Antonius Research Foundation (St. Antonius Onderzoeksfonds) Publication of this thesis was financially supported by maatschap heelkunde van het St. Antonius Ziekenhuis, raad van bestuur van het St. Antonius Ziekenhuis, Nederlandse Vereniging voor Endoscopische Chirurgie and Chipsoft B.V. Optimal treatment of acute cholecystitis Optimale behandeling van cholecystitis acuta (met een samenvatting in het Nederlands) PROEFSCHIFT ter verkrijging van de graad van doctor aan de Universiteit Utrecht op gezag van de rector magnificus, prof. dr. G.J. van der Zwaan, ingevolge het besluit van het college voor promoties in het openbaar te verdedigen op dinsdag 5 september 2017 des middags te 4.15 uur door Charlotte Susan Loozen geboren op 3 februari 1988 te Haarlem PROMOTOR: Prof. dr. M.R. Vriens COPROMOTOREN: Dr. D. Boerma Dr. H. C. van Santvoort Aan mijn lieve moedertje (en ‘n beetje aan papa) CONTENTS CHAPTER 1 General introduction and thesis outline 9 PART I TREATMENT STRATEGIES FOR ACUTE CHOLECYSTITIS CHAPTER 2 Randomized clinical trial of extended versus single-dose 19 perioperative antibiotic prophylaxis for acute calculous cholecystitis British Journal of Surgery, 2017 CHAPTER 3 The use of perioperative antibiotic prophylaxis in the 35 treatment of acute cholecystitis (PEANUTS II trial): study protocol for a randomized controlled trial Accepted for publication in Trials (minor revisions) CHAPTER 4 Conservative treatment of acute cholecystitis: a systematic 53 review and pooled analysis Surgical endoscopy, 2017 CHAPTER 5 The optimal treatment of patients with mild and moderate 73 acute cholecystitis: time for a revision of the Tokyo Guidelines Surgical Endoscopy, 2017 CHAPTER 6 Stand van Zaken: behandeling van cholecystitis acuta 87 Accepted for publication in Nederlands Tijdschrift Voor Geneeskunde (minor revisions) PART II MANAGEMENT OF HIGH-RISK PATIENTS WITH ACUTE CHOLECYSTITIS CHAPTER 7 Acute cholecystitis in elderly patients: a case for early 103 cholecystectomy Journal of visceral surgery, 2017 6 OPTIMAL TREATMENT OF ACUTE CHOLECYSTITIS CHAPTER 8 Early cholecystectomy for acute cholecystitis in the elderly population: a systematic review and meta-analysis 115 Digestive surgery, 2017 CHAPTER 9 Laparoscopic cholecystectomy versus percutaneous catheter 133 drainage for acute calculous cholecystitis in high-risk patients Submitted PART III SURGICAL TREATMENT OF COMMON BILE DUCT STONES CHAPTER 10 Surgical treatment of common bile duct stones 163 Gallstones: recent advance in epidemiology, pathogenesis, diagnosis and management (book), 2016 CHAPTER 11 Summary and general discussion 191 APPENDICES Dutch Summary (Nederlandse samenvatting) 202 Review Committee 209 Authors and affiliations 210 Acknowledgements (dankwoord) 213 Curriculum Vitae 215 7 OPTIMAL TREATMENT OF ACUTE CHOLECYSTITIS CHAPTER 1 General introduction and thesis outline CHAPTER 1 INTRODUCTION Acute cholecystitis is a common indication for hospital admission and an increasing burden on the Western health care system. More than 90% of cases of acute cholecystitis are associated with cholelithiasis; a condition that afflicts at least 10% of the people in Western countries.1 The prevalence of gallstones increases with age; in patients aged ≥ 60 the prevalence rate ranges from 20% to 30%2,3 and increases to 80% in institutionalized individuals aged ≥ 90.4 The key element in the pathogenesis of acute calculous cholecystitis seems to be an obstruction of the cystic duct in the presence of bile supersaturated with cholesterol.4 Brief impaction may cause pain only, whereas prolonged impaction can result in inflammation. With inflammation, the gallbladder becomes enlarged and tense, and wall thickening and an exudate of pericholecystic fluid may develop.5 While in most cases the inflammation initially is sterile, secondary infection occurs in approximately 30-50% of the patients,6 most commonly caused by E. coli and K. pneumoniae. Bacterial superinfection with gas-forming organisms may lead to gas in the wall or lumen of the gallbladder (emphysematous cholecystitis). The wall of the gallbladder may undergo necrosis and gangrene (gangrenous cholecystitis). Without appropriate treatment, the gallbladder may perforate, leading to the development of an abscess or generalized peritonitis.5 Acute cholecystitis usually starts with an attack of biliary colic, often in a patient who had previous attacks. The pain persists and localizes in the right upper quadrant. Besides a positive Murphy’s sign and tenderness in the right upper quadrant, also fever and elevation in the white blood cell count are classically described.7 According to the international guidelines for the management of acute cholecystitis, the "Tokyo guidelines", acute cholecystitis is clinically suspected if at least one local sign of inflammation (Murphy’s sign or pain, tenderness or mass in the right upper quadrant) and one sign of systematic inflammation (fever, leucocytosis, elevated C-reactive protein level) is present.8 Only if confirmed by imaging, the diagnosis is definitive. Several imaging modalities can be used. Ultrasonography is usually favoured as the first test because it is relatively inexpensive and widely available, it involves no radiation exposure and has high sensitivity and specificity (81% and 83%, respectively).9 Typical diagnostic findings include thickening of the gallbladder wall, presence of pericholecystic fluids and a sonographic Murphy’s sign. Scintigraphy and CT-tomography are usually reserved for 10 OPTIMAL TREATMENT OF ACUTE CHOLECYSTITIS
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