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78 Cards in this Set
- Front
- Back
What type of gland is the pancreas?
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Endocrine AND Exocrine
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Endocrine portion of the pancreas secretion
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hormones for regulation of carbohydrate metabolism
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Exocrine secretions of the pancreas
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enzymes aiding in digestion
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Why is it difficult to perform a physical examination of the pancreas?
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It is deeply located, under many organs
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Portion of pancreatic fluid that acts to neutralize HCL within the duodenum
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Bicarbonate
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Amylase
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exocrine secretions that breaks down carbohydrates
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Lipase
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exocrine secretions that breaks down fat
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Proteolytic enzyme precursors
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exocrine secretions that are activated in the duodenum and break down proteins
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Insulin
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endocrine secretion that lowers blood glucose by promoting its uptake in to cells
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Glucagon
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endocrine secretion that raises blood glucose by promoting breakdown of liver stores
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How does the pancreas regulate auto-digestion by proteolytic enzymes that it creates?
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- They are stored as inactive precursors (zymogens)
- They are stored in membrane bound "sacks" - They are only activated after being secreted into the duodenum - There are inhibitors present to prevent premature activation |
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Main causes (2) of pancreatitis
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alcohol, and duct obstruction
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two forms of pancreatitis
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acute, chronic
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how many new cases of acute pancreatitis in USA each year?
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5,000
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Mortality rate of acute pancreatitis
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10%
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Acute pancreatitis
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inflammation of the pancreas associated with edema, autodigestion, necrosis, and hemorrhage
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Biliary pancreatitis
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inflammation of pancreas after a stone becomes lodged int he sphincter of iddi, ampulla of vater
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risk factor of severe pancreatitis
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obesity, due to increased deposits of fats around the pancreas
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Symptoms of acute pancreatitis
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- abdominal pain that radiates to the back
- nausea and vomiting |
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serum tests performed to detect acute pancreatitis
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- serum amylase
- serum lipase - WBC levels - Glucose levels (hyperglycemia) - Calcium levels (hypocalcemia) |
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What will acute pancreatitis look like with U/S?
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edema, dilated ducts, calcification, pseudocysts
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Differential diagnosis for acute pancreatitis
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perforated viscus, cholecystitis, biliary colic, intestinal obstruction, mesenteric occlusion, renal colic, myocardial infarction, aortic aneurysm, and connective tissue disorders
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(T/F), 80-90% of acute pancreatitis cases are self limited and subside within 3-7 days after treatment
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True
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Acute pancreatitis treatment
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supportive: IV fluids, pain relief, withholding food intake to reduce gastric contents entering duodenum (NPO), antibiotics to prevent secondary infection
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Complications of acute pancreatitis
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- Phlegmon (mucous mass)
- Pseudocyst (necrotic debris) - Abscess - Pancreatic ascites |
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Complications of pseudocysts from acute pancreatitis
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Infection, bleeding, and rupture in to peritoneum
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Chronic pancreatitis
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progressive destruction of pancreatic acini from inflammation, fibrosis, and dilation of ducts
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Conditions associated with chronic pancreatitis
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Alcohol abuse, trauma, drugs
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Most common cause of chronic pancreatitis in USA (adult/children)
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Alcoholism in adults, CF in children
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Signs of chronic pancreatitis
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- Severe abdominal pain that lasts years before physically manifestation occurs
- "Fatty Poop" - Pain is primarily in back, or radiates there - Weight loss - Obstructive jaundice - Diabetes (after gland destruction) - GI bleeding |
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Why weight loss with chronic pancreatitis?
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Anorexia, and poor fat absorption
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Differential diagnoses for chronic pancreatitis
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- Abdominal malignancies (colon, stomach, pancreas cancer)
- Peptic ulcer disease - Mesenteric ischemic disease |
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(T/F) chronic pancreatitis causes elevated serum levels of amylase and lipase
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False, these levels are not effected by chronic pancreatitis unless it is associated with an acute attack
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What will imaging show in chronic pancreatitis
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Dilated ducts, and calcifications
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Treatment of chronic pancreatitis
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prevent further damage of pancreas, pain relief, replace loss of function, drainage of pseudocysts, partial resection of damaged duct
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Complications of chronic pancreatitis
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From destruction of gland:
- Pseudocysts - Pancreatic ascites - CBD obstruction - Diabetes - Peptic ulcer - Insufficient exocrine function - Splenic vein thrombosis |
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Why must all tumors of the pancreas be removed?
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For differentiation from adenocarcinomas
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Percent of pancreatic neoplasms that are cystic tumors
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5%
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Where in pancreas are cystic tumors located?
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body or tail
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Prognosis for pancreatic carcinoma
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Very bad, 98% fatal, 5th most common cause of cancer related death
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Primary suspect for pancreatic carcinoma
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70 year olds, slightly more male than female, Africans more predisposed
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Risk factors for pancreatic carcinoma
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- Smoking!
- Industrial work - Autoimmune pancreatitis - Age >50 - Family Hx |
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Will an alcoholic be at higher risk for contraction of pancreatic carcinoma?
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No, not related unless smoking is also involved.
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What is a worrisome sign that may lead to diagnosis of pancreatic carcinoma?
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Painless jaundice
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What causes painless jaundice?
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Cancer in pancreatic head that pushes on, and obstructs, the CBD
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Signs related to pancreatic carcinoma
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- Painless jaundice
- Very distended GB, can be palpated!! - Weight loss (unintentional, anorexia due to mass effect) - Pain in abdomen, radiating to back |
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Percent of patients with pancreatic carcinoma that present with obstructive jaundice
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80%
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What does significant pain suggest in relation to pancreatic carcinoma?
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invasion of nerves supplying abdominal organs
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Most common portion of pancreas effected by pancreatic carcinoma
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Head, then body, then tail
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What type of carcinoma are 90% of pancreatic carcinoma?
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adenocarcinoma, from ducts or glands
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How does one quantify the level of pain?
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If pain is disrupting normal sleep patterns it is SEVERE!
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When a very enlarged GB is causing abdominal distention WITHOUT pain, what is it called?
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Courvoisier sign
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Whipple procedure
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Removal of some, or all, of the pancreas and duodenum. Very hard and long procedure with high mortality rate. "pancreatoduodenectomy"
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Where is the most common spot for pancreatic carcinoma to met. to?
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Liver
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What is the ONLY way to diagnose pancreatic carcinoma?
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Tissue biopsy
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Why is it difficult to detect pancreatic carcinoma early?
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- Nonspecific symptoms
- No way to screen - Blood tests not sensitive enough |
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Order of imaging modalities when it comes to pancreatic carcinoma
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Ultrasound first, then CT, ERCP
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Which modality detects pancreatic cancer 80% of the time?
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CT
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What is the least invasive way to diagnose pancreatic carcinoma?
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FNA with u/s or CT guidance
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Percent of pancreatic carcinomas located in each portion of the pancreas
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- Head: 70%
- Body: 20% - Tail: 10% |
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Which area of the pancreas will provide the best prognosis (after resection) when effected with pancreatic carcinoma?
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The head
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Percent of pancreatic carcinomas arising from endocrine cells
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5-10%
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5-year survival rate for patients that undergo surgical resection of the body/tail of pancreas
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10%
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How are symptoms of pancreatic cancer treated through surgery?
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- Surgical decompression of biliary tract to stop jaundice
- Destruction of celiac plexus (nerves) to stop pain |
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Does the risk of cancer recurrence change based on type of operative procedure? (removal of pancreas vs. pancreas and duodenum0
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No
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What is the survival length of a patient who has un-resectable pancreatic carcinoma?
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6 months
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Most common endocrine tumor of the pancreas
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Insulinoma
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2nd most common endocrine tumor of the pancreas
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Gastrinoma
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Clusters of endocrine cells that secrete hormonal products
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Islets of Langerhans
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Classes of islets and their respective secretions
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A cells: glucagon to raise glucose levels
B cells: (beta) insulin, lower glucose levels D cells: somatostatin, slows body functions PP cells: pancreatic polypeptide |
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Symptom related to multiple gastrinomas
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Ellison syndrome
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Complication from gastrinomas
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peptic ulcers due to increased HCL
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Test for gastrinoma
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serum gastrin
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Hallmark of insulinoma
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symptomatic hypoglycemia (low glucose) from hyper secretion of insulin
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Test for insulinoma
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taking unsulin levels during fasting hypoglycemia (they will stay elevated when its not necessary)
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Symptoms of insulinoma
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- Headache
- Slurred speech - Psych. alterations - Confusion - Visual disturbance can also cause coma or death..... |
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Secondary effects of hypoglycemia from insulinoma
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- Tremors
- Sweating - Pallor - Palpitations |
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Therapy for insulinoma
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Surgical removal, which is then monitored by blood glucose levels
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