Gastroenterología

BACKGROUND: Chronic constipation is a common, heterogeneous disorder with multiple symptoms and pathophysiological mechanisms. Patients are often referred to a gastroenterology provider after laxatives fail. However, there is limited knowledge of the spectrum and management of constipation disorders. AIM: To discuss the latest understanding of the spectrum of constipation disorders, tools for identifying a pathophysiologic-based diagnosis in the specialist setting, treatment options and the patient's perspective of constipation...

The British Society of Gastroenterology in collaboration with British Association for the Study of the Liver has prepared this document. The aim of this guideline is to review and summarise the evidence that guides clinical diagnosis and management of ascites in patients with cirrhosis. Substantial advances have been made in this area since the publication of the last guideline in 2007. These guidelines are based on a comprehensive literature search and comprise systematic reviews in the key areas, including the diagnostic tests, diuretic use, therapeutic paracentesis, use of albumin, transjugular intrahepatic portosystemic stent shunt, spontaneous bacterial peritonitis and beta-blockers in patients with ascites...

PURPOSE OF REVIEW: Acute pancreatitis is a common condition that affects patients with varying degrees of severity and may lead to significant morbidity and mortality. The present article will review the current paradigm in acute pancreatitis management within the first 72 h of diagnosis. RECENT FINDINGS: Patients presenting with acute pancreatitis should be evaluated clinically for signs and symptoms of organ failure in order to appropriately triage. Initial management should focus on fluid resuscitation, with some data to support Ringer's lactate over physiological saline...

INTRODUCTION: Fluid management is a cornerstone of treatment in acute pancreatitis (AP). METHODS: Identification of existing randomized prospective trials of patients with AP, in which intravenous fluid management was a significant parameter in the experimental design, was undertaken using the PubMed and ENDOBASE databases. RESULTS: Included patients in the seven studies identified were on the whole very unwell with deaths occurring in six trials...

This is the first UK national guideline to concentrate on acute lower gastrointestinal bleeding (LGIB) and has been commissioned by the Clinical Services and Standards Committee of the British Society of Gastroenterology (BSG). The Guidelines Development Group consisted of representatives from the BSG Endoscopy Committee, the Association of Coloproctology of Great Britain and Ireland, the British Society of Interventional Radiology, the Royal College of Radiologists, NHS Blood and Transplant and a patient representative...

BACKGROUND: Acute pancreatitis is a frequent reason for patient presentation to the emergency department (ED) and the most common gastrointestinal disease resulting in admission. Emergency clinicians are often responsible for the diagnosis and initial management of acute pancreatitis. OBJECTIVE: This review article provides emergency clinicians with a focused overview of the diagnosis and management of pancreatitis. DISCUSSION: Pancreatitis is an inflammatory process within the pancreas...

Ulcerative colitis (UC) is a chronic inflammatory bowel disease that can involve any aspect of the colon starting with mucosal inflammation in the rectum and extending proximally in a continuous fashion. Typical symptoms on presentation are bloody diarrhea, abdominal pain, fecal urgency, and tenesmus. In some patients, extraintestinal manifestations may predate the onset of gastrointestinal symptoms. A diagnosis of UC is made on the basis of presenting symptoms consistent with UC as well as endoscopic evidence showing continuous and diffuse colonic inflammation that starts in the rectum...

No abstract text is available yet for this article.

IMPORTANCE: Patients with biliary disease or underlying dyslipidemias are at risk for pancreatitis in pregnancy. Appropriate treatment can decrease the risk of recurrence and perinatal complications. Prevention of severe lipid elevations can prevent the development of pancreatitis in pregnancy. OBJECTIVE: To review the pathophysiology, diagnosis and treatment of gallstone and severe hypertriglyceride-induced pancreatitis in pregnancy. EVIDENCE ACQUISITION: We performed a literature search regarding pancreatitis, gallstones, hyperlipidemia, and the treatment of both severe hypertriglyceride-induced pancreatitis and gallstone pancreatitis in pregnancy...

Hypertriglyceridemia (HTG) is a well-established but underestimated cause of acute pancreatitis and recurrent acute pancreatitis. The clinical presentation of HTG-induced pancreatitis (HTG pancreatitis) is similar to other causes. Pancreatitis secondary to HTG is typically seen in the presence of one or more secondary factors (uncontrolled diabetes, alcoholism, medications, pregnancy) in a patient with an underlying common genetic abnormality of lipoprotein metabolism (familial combined hyperlipidemia or familial HTG)...

Upper gastrointestinal bleeding (UGIB) is a common medical emergency, with a reported mortality of 2-10%. Patients identified as being at very low risk of either needing an intervention or death can be managed as outpatients. For all other patients, intravenous fluids as needed for resuscitation and red cell transfusion at a hemoglobin threshold of 70-80 g/L are recommended. After resuscitation is initiated, proton pump inhibitors (PPIs) and the prokinetic agent erythromycin may be administered, with antibiotics and vasoactive drugs recommended in patients who have cirrhosis...

Acute kidney injury (AKI) is a common presentation in patients with advanced cirrhosis hospitalized with acute decompensation. A new revised classification now divides AKI in cirrhotic patients into two broad subgroups: hepatorenal syndrome AKI (HRS AKI) and non-hepatorenal syndrome AKI (non-HRS AKI). HRS AKI represents the end-stage complication of decompensated cirrhosis with severe portal hypertension and is characterized by worsening of renal function in the absence of prerenal azotemia, nephrotoxicity, and intrinsic renal disease...

Hepatic encephalopathy (HE) is a peculiar kind of brain dysfunction caused by liver insufficiency and/or portal-systemic shunting. It is related to gut-derived substances. It is a relevant cause of morbidity and hospitalisation for patients with cirrhosis. The prognosis of HE is important in terms of survival and re-hospitalisation. It is related to impaired quality of life, falls and poor driving; presents a relevant burden for caregivers and health services; and may negatively impact on patient's job and income...

No abstract text is available yet for this article.

In the cirrhotic liver, distortion of the normal liver architecture is caused by structural and vascular changes. Portal hypertension is often associated with a hyperdynamic circulatory syndrome in which cardiac output and heart rate are increased and systemic vascular resistance is decreased. The release of several vasoactive substances is the primary factor involved in the reduction of mesenteric arterial resistance, resulting in sodium and water retention with eventual formation of ascites. Management of these patients with acute cardiac dysfunction often requires invasive hemodynamic monitoring in an intensive care unit setting to tailor decisions regarding use of fluids and vasopressors...

Acute pancreatitis represents a disorder characterized by acute necroinflammatory changes of the pancreas and is histologically characterized by acinar cell destruction. Diagnosed clinically with the Revised Atlanta Criteria, and with alcohol and cholelithiasis/choledocholithiasis as the two most prominent antecedents, acute pancreatitis ranks first amongst gastrointestinal diagnoses requiring admission and 21st amongst all diagnoses requiring hospitalization with estimated costs approximating 2.6 billion dollars annually...

No abstract text is available yet for this article.

Although uncommon, medication-induced colonotoxicity is important to recognize because medication cessation generally leads to prompt clinical improvement, while medication continuation results in disease exacerbation. This review categorizes the association between medications and colonotoxicity as "well-established" or "probable," according to the following criteria: total number of reported cases, number of different research groups reporting an association, experimental and pharmacologic evidence of an association, and validity of an association in each reported case...

No abstract text is available yet for this article.

Patients commonly present to the emergency department with anorectal complaints. Most of these complaints are benign and can be managed conservatively; however, there are a few anorectal emergencies that clinicians must be aware of in order to prevent further complications. The history and physical examination are especially important so that critical disorders can be recognized and specific treatment plans can be determined. It is important to maintain a broad differential diagnosis of anorectal disease and to distinguish benign from serious processes...