GI/Nutrition Flashcards
Focus: Diagnosis, H&P, Clinical Therapeutics
Tx of anal fissure?
Supportive care – sitz bath, analgesics, high fiber diet, bulking agents (mannitol, lactose, dextran glycine)
Complications of anal fissure?
Perianal abscess/fistula
Tx of perianal abscess/fistula?
Amox/clav
Cipro + metronidazole
MC cause of appendicitis?
Fecalith, malignancy, or inflammation or foreign body
Characteristics sx of appendicitis?
anorexia/not eating
12-18hrs of periumbilical or epigastric pain that migrates to RLQ; N/V occuring shortly afterwards
PE: rebound tenderness, rigidity, guarding, Rovsing, Obturator, Psoas, McBurney’s point tenderness
Appendicitis dx test?
CT
PG or child – US
US is preferred initial test
Appendicitis pre-surgery abx are indicated when?
What tx?
Leukocytosis around 10,000-20,000 –> concern for perforation or peritionitis (e. coli)
Ceph + metronidazole
Pip-tazo
Tx of gallstones?
Asx: observation
Sx: Ursodiol long term 6-9mo
Nausea precipitated by fatty foods is indicative of?
Gallstones
Cholecystitis tx?
Abx: Ceftriaxone + metronidazole then cholecystectomy
**ERCP stone extraction is only performed when dx is choledocholithiasis (stone in common bile duct)
Enlarged, palpable gallbladder + Murphy’s sign indicates?
Cholecystitis
Cholecystitis labs + imaging?
WBC, bilirubin, alk phos, & LFTs
U/S or CT or
HIDA scan – Gold-standard
Choledocholithiasis vs cholecystitis presentation?
Choledocholithiasis - more prolonged pain + JAUNDICE;
Cholecystitis - pain + no jaundice or pruritis/migration to liver or pancreas
MC type of gallstone?
Cholesterol
RF for gallstones?
5F:
Fat
Fair
Forty
Female
Fertile
What indicates gallstone is in the common bile duct/biliary tract compared to locally within the cystic duct?
Bilirubin will be elevated more than AST/ALT
What lab is specific to liver and gallbladder/bile issue?
GGT
What does HIDA scan show that is diagnostic of cholecystitis?
No visualization of the gallbladder
What characteristics indicate cholangitis vs choledocholithiasis?
Why is cholangitis a concern?
Cholangitis involves CHARCOT’S TRIAD – fever/chills + jaundice + RUQ pain
cholangitis is an infxn of the biliary tract (jaundice), it can develop into septic shock (Reynold’s pentad –> AMS + shock + RUQ pain + jaundice + fever/chills)
Tx of cholangitis?
PCN + aminoglycosides (gentamicin, tobramycin, streptomycin, amikacin)
ERCP
**What does PT tell you? What if it is prolonged?
Prothrombin time - the amount of time it takes to make coag factors from the liver
Elevated PT is an EARLIER INDICATOR OF SEVERE LIVER INJURY/PROGNOSIS THAN ALBUMIN
What labs identify a sign of liver failure?
AST/ALT - elevated
PT - prolonged
*albumin - low, indicating poor protein synthesis
AST & ALT values >1,000 usually indicate?
Acute viral hepatitis
AST:ALT ratio >2 is indicative of?
Alcoholic hepatitis
First line tx for patient with chronic constipation?
Fiber + Bulk-forming agents WITH WATER or Polyethylene glycol (MiraLax, GlycoLax) or Sorbitol
Metamucil (Psyllium colloids)
Citracel (methycellulose)
Polycarbophil
First line tx for acute constipation?
MiraLax/GlycoLax (polyethylene glycol) or Sorbitol
Tx for acute bowel evacuation/rapid tx of constipation when first lines don’t work?
Saline laxatives - Mag citrate, Milk of magnesia, Fleet Enema
Stool softeners drug name?
Docusate - important to know bc stool softeners are PREVENTATIVE not TX for constipation
Second line tx for patient with refractory constipation?
TOC for hepatic encephalopathy?
Lactulose - removes nitrogenous waste by evacuating bowel
“Anticipatory” Chemo-induced nausea/vomiting preventative tx?
Benzos
Delayed chemo-induced n/v tx?
5HT3 - ondansetron + steroid - dexamethasone
7 extrahepatic manifestations of cirrhosis?
Hepatic encephalopathy - asterixis + sweet breath (fetorhepaticus)
Anovulation
Hypogonadism, gynecomastia
Jaundice, Telangiectasias
MSK - Dupuytren’s contracture
Heme - Hemochromatosis (excess iron)
Portal HTN
What is the Child-Pugh Score?
Staging for survival percentage of cirrhosis
Stage C = low 1yr and 2yr survival
What is MELD score? What score is high?
Model for end stage liver disease
15+ = high 3mo mortality
Sx of bowel obstruction?
Obstipation
Distention
Watery stool or no stool
Colicky abdominal pain
Early satiety
N/V
Early obstruction = hyperactive bowel sounds “high-pitched tinkling”
Late obstruction = hypoactive bowel sounds
Eventual peritonitis
Tachycardia, HoTN d/t dehydration
Proximal SBO sx?
Profuse emesis with undigested food
Upper GI discomfort
Epigastric distention
Distal SBO sx?
Diffuse crampy abdominal pain
LBO sx?
Deep, visceral hypogastric cramping pain
Dx labs for bowel obstruction?
Dx imaging?
CBC - leukocytosis if acute stress/dehydration, elevated hematocrit
SCr - elevated d/t hypovolemia w/prerenal failure
abdominal X-ray, CT w or w/o contrast if x-ray inconclusive
What findings are seen on abdominal x-ray for bowel obstruction?
-Dilated bowel loops w/ air-fluid levels
-little to no air distal to obstruction
-3-6-9 rule: small bowel >3cm, large bowel >6cm, cecum >9cm
Tx of SBO?
What do you need to monitor?
NPO, fluids, gastric decompression (NGT)
Monitor electrolytes - hypokalemia and metabolic acidosis (ischemia?)
LBO tx?
Decompress obstructed segment (NGT) + Laparotomy almost always required d/t necrotic bowel
If sigmoid and peritonitis: sigmoidoscopy w/ rectal tube to decompress bowel; if ischemic then sigmoidectomy
Most common cause of LBO?
Colorectal cancer - adenoma polyps
Clinical manifestations of colon cancer?
ANEMIA - iron deficiency anemia
Fatigue, weakness
Changes in bowel habits
RECTAL BLEEDING/positive occult
Abdominal pain