GI AND LIVER Flashcards
(412 cards)
what is achalasia?
-oesophageal aperistalsis and impaired relaxation of the lower oesophageal sphincter
what are the risk factors for developing achalasia?
- Allgrove syndrome (achalasia, alacrima, adrenal insufficiency).
- Viral infection.
- Autoimmune disease such as multiple sclerosis and Sjogren’s syndrome.
what are the clinical features of achalasia?
- Intermittent dysphagia for both solids and liquids from the onset.
- Retrosternal chest pain due to oesophageal spasm.
- Regurgitation of food.
- Aspiration pneumonia.
- Gradual weight loss.
what is the first line investigation for achalasia and what does it show?
- upper GI endoscopy:
- -Obscured mucosa
- -Dilated oesophagus
- -Food debris.
what is seen on barium swallow in achalasia?
- Lack of peristalsis
- bird beak appearance of lower end of oesophagus.
which investigation is diagnostic of achalasia and what does it show?
- manometry
- Incomplete relaxation of the lower oesophageal sphincter
- oesophageal peristalsis.
how is achalasia treated?
- nifedipine or verapamil.
- pneumatic dilatation or laparoscopic cariomyotomy
- botox
what are the complications of acute pancreatitis?
- haemorrhage
- hyperglycaemia
- hypocalcaemia
- pancreatic pseudocyst
- fistulas
- pancreatic abscess
- ARDS
what are the causes of acute pancreatitis in adults?
- Idiopathic
- Gallstones.
- Ethanol.
- Trauma.
- Steroids.
- Mumps.
- Autoimmune.
- Scorpion bites.
- Hypertriglyceridaemia, hypercalcaemia, or hypothermia.
- ERCP.
- Drugs such as bendroflumethiazide, allopurinol, azathioprine and tetracyclines.
what are the causes of acute pancreatitis in children?
- blunt abdominal trauma (RTA)
- viral infection (mumps, Hep A, coxsackie B)
- multisystem disease such as SLE, Kawasaki, HUS, IBD and hyperlipidaemia)
- drugs and toxins (thiopurines, metronidazole, cytotoxic drugs)
- pancreatic duct obstruction (e.g. cystic fibrosis, choledochal cysts or tumours)
what are the symptoms of acute pancreatitis?
- Severe epigastric pain that radiates to the back. It is sudden onset, continuous, and worse with movement.
- Nausea and vomiting.
what are the signs of acute pancreatitis?
- Abdominal tenderness and distension.
- Stony dull percussion due to pleural effusion.
- Bluish discolouration around the Umbilicus (Cullen’s sign) or over both flanks (Grey Turner’s sign) due to haemorrhagic pancreatitis.
- Facial spasm due to hypocalcaemia (Chvostek’s sign).
- Tachycardia, hypotension, oliguria, sweating due to hypovolaemic shock.
what investigations should be performed for suspected acute pancreatitis and what is seen?
- Amylase or lipase: 3x upper limit of normal
- transabdominal USS: may see gallstones
- FBC: neutrophils raised
- CRP: raised
what three criteria should be met to diagnose acute pancreatitis?
- Upper abdominal pain.
- Serum lipase or amylase is greater than 3x the upper limit.
- Radiological changes (USS, CT) consistent with pancreatitis.
what are the poor prognostic factors in pancreatitis?
- PaO2 < 8.0 kPa
- Age > 55 years.
- Neutrophilia > 15 x 109/L
- Calcium < 2 mmol/L
- Renal Function: urea > 16 mmol/L
- Enzymes: Serum LDH > 600 U/L
- Albumin < 30 g/L
- Sugar: Blood glucose > 10 mmol/L
how is acute pancreatitis managed?
- fluid resus
- supportive care e.g. analgesia, supplemental oxygen, antiemetic and calcium/magnesium replacement therapy
- establish normal feeds when tolerable
- ERCP for gallstones
how is pancreatic necrosis managed?
- Administer intravenous antibiotics (imipenem).
- Perform percutaneous catheter drainage.
- Perform a necrosectomy if catheter drainage is unsuccessful.
what are the causes of chronic pancreatitis?
- alcohol excess
- hereditary pancreatitis
- autoimmune pancreatitis
- ductal adenocarcinoma
what are the complications of chronic pancreatitis?
- pancreatic pseudocyst formation
- pleural effusion
- jaundice
- fat necrosis
what are the symptoms of chronic pancreatitis?
- An intermittent dull epigastric pain that radiates to the back, that is relieved by leaning forward, and worsened by eating.
- Steatorrhoea.
- Weight loss.
- Malnutrition.
- Bloating, abdominal cramps, excessive flatus.
- Nausea and vomiting.
what are the signs of chronic pancreatitis?
- Signs of chronic liver disease.
- Epigastric tenderness.
- Jaundice.
- Abdominal distension due to a pseudocyst.
- Skin nodules due to disseminated fat necrosis.
- Shortness of breath due to a pleural effusion.
how is chronic pancreatitis managed?
- lifestyle changes such as smoking and alcohol cessation, smaller, more frequent meals and minimising sugar intake.
- analgesia (paracetamol) for pain relief.
- pancreatin and fat soluble vitamins for exocrine insufficiency.
- endoscopic drainage of pseudocysts if there is persistent pain or complications
- biliary decompression if there is a two-fold elevation in ALP that persists for more than 1 month.
- pancreatic ductal decompression for pain relief if other medications fail.
what is a mallory-weirs tear?
rupture of the oesophageal mucosa
what is Boerhaave syndrome?
perforation of the whole thickness of the oesophageal wall