GI Flashcards
(38 cards)
Which medications are used for cardiovascular disease?
Furosemide, thiazides.
Which medications are used for inflammatory bowel disease?
Sulfasalazine, 5-ASA.
Which medications are used for immunosuppression?
Azathioprine.
Which medications are used for seizures?
Valproic acid.
Which medications are used for diabetes?
Exenatide.
Which medications are used for human immunodeficiency virus (HIV)?
Didanosine, pentamidine.
What nonsurgical conditions can mimic an acute abdomen?
Gastroenteritis, acute adrenal insufficiency, sickle cell crisis, diabetic ketoacidosis, acute porphyria, pelvic inflammatory disease, kidney stones, and pyelonephritis.
What is the significance of bruising around the umbilicus, flank, and inguinal ligament?
They are signs of retroperitoneal hemorrhage in association with acute hemorrhagic pancreatitis where methemalbumin formed from digested blood tracks subcutaneously to different parts of the abdominal wall. Grey Turner’s sign refers to a blue-black discoloration in the flanks. Cullen’s sign is a blue-red discoloration at the umbilicus, and Fox’s sign is bruising over the inguinal ligament.
What are the signs, symptoms, and findings of acute pancreatitis?
Epigastric pain radiating to the back, worsened with food, nausea/vomiting (90% of cases), anorexia, or decreased oral intake. Physical exam frequently reveals fever, tachycardia, epigastric tenderness with localized guarding, and hypoactive bowel sounds secondary to reactive ileus.
What structures are in the retroperitoneum?
One can remember these structures with the following mnemonic, ‘SAD PUCKER’: suprarenal (adrenal) glands, aorta/IVC, duodenum (2nd and 3rd part), pancreas (except tail), ureters, colon (ascending and descending), kidneys, esophagus and rectum.
What is the pathophysiology of pancreatitis?
It occurs as a result of inappropriate activation of pancreatic enzymes leading to peripancreatic inflammation. Intraparenchymal extravasation of enzymes causes autodigestion of pancreatic parenchyma but primarily damages the peripancreatic tissues and vasculature. The inflammatory response is out of proportion to the insult and, with time, potentiates further damage leading to fluid sequestration, fat necrosis, vasculitis, and hemorrhage.
What are the etiologies for pancreatitis?
5 ‘GET SMASHED’ will help you remember the causes of acute pancreatitis: G – gallstones (40%), E – ethanol (30%), T – tumors, S – scorpion stings, M – mycoplasma or mumps, A – autoimmune (Lupus or polyarteritis nodosa), S – surgery or trauma, H – hyperlipidemia/hypercalcemia, E – ERCP or embolic/ischemic, D – drugs or toxins.
What medications can cause pancreatitis?
Medications that can cause pancreatitis include: Cardiovascular disease: Furosemide, thiazides; Inflammatory bowel disease: Sulfasalazine, 5-ASA; Immunosuppression: Azathioprine; Seizures: Valproic acid; Diabetes: Exenatide; HIV: Didanosine, pentamidine.
What are the 4 ‘F’s’ for gallbladder disease?
Female, fat, forty, and fertile.
What is the first step in the evaluation for gallstones?
An abdominal ultrasound is the first step in the evaluation for gallstones.
How do gallstones cause acute pancreatitis?
Gallstones cause acute pancreatitis by passing from the gallbladder into the common bile duct, causing transient impaction at the ampulla, which raises pancreatic duct pressure.
In patients with gallstone pancreatitis, how often does the gallstone remain impacted in the distal common duct?
In the majority of cases, the stone remains impacted briefly, only transiently obstructing the ampulla of Vater before passing into the duodenum.
What are the differences between acute and chronic pancreatitis?
Acute pancreatitis has a severe and sudden onset, usually caused by gallstones (40%) or alcohol (30%), presenting with epigastric pain radiating to the back, nausea, vomiting, and anorexia. Chronic pancreatitis involves recurrent episodes, is mainly caused by alcohol (90%) and anatomic defects (e.g., pancreas divisum), and presents with recurrent epigastric pain, weight loss, diabetes, and steatorrhea.
How is the severity of pancreatitis classified?
The severity is classified as mild (80-90% of cases, resolves in 2-5 days), moderately severe (with transient organ failure or complications), and severe (persistent organ failure lasting more than 48 hours).
What organ systems can be affected by acute pancreatitis?
Cardiac, pulmonary, renal, and gastrointestinal systems can be affected.
How is organ failure defined in acute pancreatitis?
Organ failure is defined by: systolic blood pressure < 90 mmHg, PaO2 ≤ 60 mmHg, creatinine >2.0 mg/L after rehydration, gastrointestinal bleeding >500 cc/24 hours, disseminated intravascular coagulation, and metabolic disturbances (calcium <7.5 mg/dl).
What is the mechanism of hypotension in pancreatitis?
Hypotension in pancreatitis is caused by inflammation and cytokine storm, leading to endothelial injury, increased vascular permeability, fluid leakage (third spacing), and massive vasodilation with reduced intravascular volume.
What are the main pulmonary complications of acute pancreatitis?
Main pulmonary complications include pleural effusions (majority on the left side) and acute respiratory distress syndrome (ARDS), caused by cytokine-mediated vasodilation and pancreatic enzyme (e.g., phospholipase A2) mediated lung injury.
What are the classic symptoms of acute pancreatitis?
Epigastric abdominal pain radiating to the back, nausea, vomiting, anorexia, fever, tachycardia.
