Gastrointestinal Flashcards
SGA grades
A, B, C
SGA A
Well nourished, no deficit in fat or muscle mass
SGA B
Mild/moderately malnourished, decreased food intake, 5-10% weight loss without stabilization or gain, some symptoms, mild moderate loss of fat or muscle
SGA C
Severely malnourished, severe deficit in food/nutrient intake, >10% weight loss which is ongoing, significant symptoms, severe functional deficit
Cachexia
Underlying disorder and loss of muscle and fat with limited improvement with optimal nutrient intake
Sarcopenia
Underlying disorder (aging) and evidence of reduced muscle and strength and no or limited improvement with optimal nutrient intake
Upper border of liver can be found at the
6th ICS, percuss from nipple to this spot and listen for change from resonant lung to dull liver, keep going until dullness changes to tympanic (lower border)
Liver span
6-12cm
Percuss for the spleen
Last intercostal space, anterior axillary line
Dullness at castells point (splenomegaly)
Percuss at the last intercostal space, anterior axillary line, ask patient to take a deep breath and hold it. A change from tympanic to dull during deep inspiration is a positive sign for splenomegaly.
T4 dermatome can be palpated at the level of
The nipples
Murphys sign detects
Cholecystitis
Murphys sign is when
Pt breathes out with pressure under the right costal margin at mid clavicular line. Patient catching breath is positive
McBurneys point helps detect
Appendicitis
McBurney’s point is done by
Palpating 2/3 from umbilicus to asis, pain is +
DDx elevated serum lipase
Acute pancreatitis, PUD, gastritis, celiac, small bowel obstruction, bowel ischemia
Common causes of acute pancreatitis
Gallstones, alcohol, post ERCP
Should someone with acute pancreatitis get an ERCP
No, it can make things worse. Only considered if theres also biliary obstruction and cholangitis
Phenyleprine is a
Vasopressor
Pancreatitis with necrosis and sepsis should be treated
NOT in the OR, only supportively in the ICU. Put off de ride ent for as long as possible.
Bilious vomiting suggests
Intestinal obstruction
Clinical presentation of ileus
Slow, with N/V, lyte imbalance, a dull ache, abdo distension
Clinical presentation of small bowel obstruction
Onset sudden, N/V, lyte imbalance, pain is crampy/colicky, and there is likely abdo distention
Prolonged postoperative ileus is
The delayed return of bowel function more than 72 hours after surgery
Treatment for prolonged postoperative ileus is
Conservative with bowel rest and serial examinations, as it is typically self resolving
Terrys nails can be indicative of
Cirrhosis
Leukonychia can be indicative of
Low albumin
Discolouration of the abdomen can be a sign of
Retroperitoneal bleeding
Signs of ascites
Distension, bulging flanks
Caput medusae indicative of
Portal hypertension
Percussion of a healthy abdo sounds
Tympanic
Dullness to abdo percussion indicates
A mass, or ascites
Auscultate for abdo bruits where
Midline above the belly button
Which quadrant is the appendix in
RLQ
Structural causes of dysphagia (3)
Neoplasm, peptic stricture, mucosal web (shatzki ring)
Treatment of Schatzki ring (steakhouse syndrome)
Disruption of the ring and acid suppressive therapy
Birds beak sign is indicative of
Achalasia
Treating achalasia
Relax the LES with CCBs, nitrates, dilation, botulin injection, surgery
Reynauds, GERD, and dysphagia is likely
Scleroderma
Treating eosinophilic esophagitis
Corticosteroids and or dilatation
Drug classes for GERD (3)
Antacids, H2 blockers, PPIs
Barrett’s esophagus is
Replacement of squamous mucosa with intestinal mucosa
Barrett’s esophagus is a precursor to
Esophageal adenocarcinoma
Main cause of peptic ulcer disease is
H Pylori
H pylori mode of transmission
Fecal oral
Symptoms of Zenker diverticulum
Older patients with dysphagia, halitosis, and regurgitation of undigested food
Etiology of travellers diarrhea longer than 2 weeks
Parasitic
Leading cause of travellers diarrhea
E. coli
Greasy and prolonged travellers diarrhea
Giardia
Patients with severe Crohn’s disease are medically managed with what kind of drugs
Biologic theory, immunomodulators
The only major modifiable risk factor in Crohn’s disease is
Smoking
Abdominal X-rays demonstrating distended loops of bowel with air fluid levels
Small bowel obstruction
hepatocellular pattern of liver injury shows
Increased AST and ALT
Treating autoimmune hepatitis
Predinisone with or without azathioprine
How can you confirm the diagnosis of autoimmune hepatitis?
Positive serology or hypergammaglobulinemia
What lab changes might you see in alcoholic hepatitis?
GGT, AST, ALT. ALT/AST>2 is especially suspicious
Arrhythmic flapping tremor of the fully extended hand is called
Asterixis
Alcohol induced persisting amnestic disorder is called
Korsakoff’s psychosis
Chronic deficiency in thiamine is seen in
Alcoholism
Three meds approved by FDA to help alcoholism
Disulfiram, naltrexone, and acomprosate
Obesity starts at BMI
30
Top three anti nauseants to know and try
Prochlorperazine, dimenhydrinate, metoclopramide
Elevated triglyceride level is defined as
250mg/dL or greater
An LDL is considered elevated when higher than
130 mg/dL
All patients started on HMG-CoA inhibitors (statins) should have what measured
Plasma lipids and liver function tests
Normal total cholesterol
Equal or less than 5.2
Normal LDL
Less than 3.4
Treat hyper cholesterolemia if LDL is greater than
130
What heart sound is often heard in those with CHF?
S4 gallop
Antimitochondrial antibody has high sensitivity and specificity for
Primary biliary cholangitis (PBC)
Elevated antinuclear antibodies and anti smooth muscle antibodies with fluctuating hepatocellular injury indicates
Autoimmune hepatitis
First line treatment for autoimmune hepatitis is
Oral glucocorticoids
Medications that can cause intrahepatic cholestasis include
Macrolide antibiotics, anabolic steroids, and oral contraceptives
Diagnosing primary biliary cholangitis is confirmed with
Serum anti mitochondrial antibody titers
Fatigue, pruritis, and elevated ALK phos are features of
Cholestasis, impaired biliary flow
Diffuse esophageal spasm can be relieved by
Nitrates and calcium channel blockers
Liver enzymes in alcoholic hepatitis
AST/ALT>2:1 ratio
Most significant modifiable risk factor for pancreatitis is
Smoking
Two types of esophageal cancers
Squamous cell carcinoma, adenocarcinoma (GE junction)
Adenocarcinoma of the GE junction can occur as a result of
Barrett’s esophagus
Trachealization of the esophagus can occur in patients with
Eosinophilic esophagitis
Two treatment options for eosinophilic esophagitis
Avoidance of allergens. Swallowing topical steroids.
Degeneration of vagal fibres innervating the distal esophagus can lead to
Achalasia
4 methods of treating achalasia
CCB nitrates, pneumatic dilation, myotomy of LES, botulinum toxin injection
CREST variant of scleroderma stands for:
Calcinosis, raynauds, esophageal dysmotility, sclerodactyly, telangiectasia
Compounds excreted by the liver (3)
Bilirubin, medications, hormones
Which liver enzyme is most specific to the liver q
ALT
Liver enzyme that is also increased in skeletal muscle injury, myocardial infarction, and hemolysis
AST
Which liver enzyme can elevate in pregnancy and bone disease?
ALP
Which liver enzyme can increase as a result of alcohol and anticonvulsant use?
GGT
Indirect bilirubin can be elevated in
Genetic diseases - Gilbert’s syndrome and crigler Najar, or increased heme breakdown - hemolysis or reabsorption of a large hematoma
Negative acute phase reactant produced by the liver
Albumin (production is reduced in acute illnesses)
Albumin can be low due to
Liver disease, protein malnutrition, protein loss, negative acute phase reactant
High INR can be indicative of
Liver disease, factor deficiency, DIC
AST rise significantly out of proportion to ALT signifies
Non hepatic cause
ALT/ULN / ALP/ULN >4
Hepatocellular
ALT/ULN / ALP/ULN <2
Cholestasic
Hepatic vein thrombosis is also called
Bud chiari syndrome
Best initial test to differentiate extrahepatic or intrahepatic cholestasis
Abdo ultrasound
Liver injury + encephalopathy + INR>1.5
Acute liver failure
Max recommended alcohol consumption for women
2 per day, 10 per week
Max recommended alcohol consumption for men
3 per day, 15 per week
Most common cause of acute liver failure
Acetaminophen use (esp chronically taking more than 4g per day)
If a pt arrives to care within 3-4 hrs of acetaminophen overdose initial treatment is
Activated charcoal to reduce absorption
Treating autoimmune hepatitis
High dose steroids (immunosuppressant)
Primary transmission of hepatitis A
Fecal oral (contaminated food and water)
Diagnosing hepatitis A
Anti HAV IgM (serum assay)
3 liver function tests
INR, albumin, bilirubin
Anti HBs +ve indicates
Hep B immunity
Anti HBc +ve indicates
Pt was actually exposed to hep B at some point
HBsAg +ve indicates
Current infection with hep B
Hep B vaccinations occur at ages
0, 1, 6, months
Treating hereditary hemochromatosis
Phelobotomy to remove excess iron
AR condition where excess copper accumulates in the brain and liver leading to dysfunction
Wilson’s disease
Treatment of Wilson’s disease
Oral zinc (inhibits copper absorption), and copper chelators
Deficiency which can lead to injury to lung tissue (emphysema) and cirrhosis
Alpha 1 antitrypsin deficiency
Meds to help with congestive hepatopathy
Diuretics to treat volume overload
Immune mediated destruction of small bile ducts, common to middle aged women, elevated GGT and ALP (cholestatic LEs)
Primary biliary cholangitis
Which antibody is diagnostic for PBC?
AMA+
Treating PBC and the associated pruritis
PBC - ursodiol (bile acid). Pruritis - cholestyramine
What chronic condition is associated with primary sclerosing cholangitis (PSC)?
Inflammatory bowel disease, ulcerative colitis
NAFLD/NASH on ultrasound
Increased echogenicity of the liver due to fatty infiltration
Management of NASH
Stop offending drugs, treat underlying conditions, gradual weight reduction
Treatment for hepatic encephalopathy
Lactulose - 2 loose BM a day. Reduces ammonia absorption by the colon.
Esophageal varices are considered high risk if
Small with bleeding stigmata, medium-large size, in patients with very advanced cirrhosis
2 main ways to prevent esophageal varices from bleeding
Beta blocker therapy and banding
Procedure used in hepatology to decrease portal pressure by blood bypassing the liver
TIPS procedure - transjugular intrahepatic portosystem shunt
SAAG is
Serum ascites albumin gradient
High SAAG is indicative of
Portal hypertension
Low SAAG caused by
Local intra-abdominal process
70% of chronic pancreatitis occurs due to
Alcohol use
Germline mutation in trypsinogen gene (PRRS1), which protects against premature trypsin activation can lead to
Hereditary pancreatitis
Mutations in CFTR gene coding for a Cl channel can lead to
Cystic fibrosis
Diffuse enlargement of the pancreas “sausage shaped gland” with biliary obstruction, jaundice, and high IgG levels is indicative of
Autoimmune pancreatitis type 1
Steatorrhea in pancreatitis doesnt occur until lipase secretion is reduced by
90%
Most specific test of pancreatic function
Secretin stimulation test
Steatorrhea treatment in pancreatitis
Pancreatic enzyme supplement (Creon or viocace) with concomitant PPI
Analgesics used in chronic pancreatitis
TCAs, pregabalin, opioid analgesia
Stones migrate into common bile duct and become impacted at the ampulla, causing jaundice called
Post hepatic jaundice
Three criteria for acute pancreatitis
Typical symptoms, biochemical evidence (lipase >3x ULN), imaging findings
BISAP score assesses
The severity of pancreatitis
Reduction or stoppage of bile flow from the liver
Cholestasis
First symptoms seen in cholestasis / jaundice
Scleral icterus
Jaundice with urobilinogen up is indicative of
Post hepatic cause of jaundice
Jaundice with increased unconjugated bilirubin
Prehepatic cause
Really high ALP/GGT is likely to signify what cause for jaundice?
Post hepatic obstruction
LDH up, haptoglobin down indicative of
Hemolysis
Common bile duct should be less than what measurement on US?
7mm
Presence of gallstones in the common bile duct
Choledololithiasis
Gold standard treatment for choledocholithiasis
ERCP (endoscopic retrograde cholangiopancreatography)
P ANCA is associated with
Ulcerative colitis or colonic Crohn’s disease
ASCA test is quite specific for
Crohn’s disease
Fecal calprotein, a breakdown product from neutrophils, is specific for
Enterocolonic inflammation
Familial adenomatous polyposis causative gene
APC
Any condition where there is an abrupt onset of abdominal pain and peritoneal irritation can be termed
Acute abdomen
Pain that is poorly localized and dull can be called
Visceral pain
Pain that is sharp and very well localized can be called
Parietal pain
Pain caused my inflammation, distention, or ischemia that is poorly localized and dull
Visceral pain
Inflammatory pain that is sharp and very well localized
Parietal pain
Abdo pain brought on by food ingestion is likely
Biliary tract disease
Diffuse abdo pain DDx (2)
Generalized peritonitis, severe pancreatitis, etc
RUQ abdo pain DDx (2)
Gallbladder and biliary tract disease
RLQ abdo pain DDx (2)
Appendicitis, Crohn’s disease
LLQ pain DDx (1)
Diverticulitis
LUQ/epigastric pain DDx (2)
Peptic ulcer disease, pancreatitis
Hypogastric pain elicited when there is an inflammatory mass lying in contact with the obturator internus
Obturator test - pelvic appendicitis or accumulation of fluid or blood
Murphys sign is also called
Inspiratory arrest
Discolouration of the umbilicus with extensive free blood in the peritoneal cavity
Cullen sign
Workup for patient with acute abdominal pain
CBC, urinalysis, CXR, abdo XR
Enzyme testing in celiac disease
IgA TTG (tissue transglutaminase)
Intensely pruritic papulo-vesicular rash associated with celiac disease
Dermatitis herpetiforms
Most common AI disease associated with celiac disease
AI thyroiditis
Biopsy findings that confirm celiac disease (4)
- Villous atrophy 2. Crypt hyperplasia 3. Increased lymphocytes intraepithelial 4. Increased LP lymphocytes and plasma cells
Diarrhea due to increased secretion or decreased absorption of sodium and chloride is called
Secretory diarrhea
Diarrhea due to non absorbable molecules in the bowel lumen is called
Osmotic diarrhea
Diarrhea due to destruction of the bowel mucosa is called
Inflammatory diarrhea
Most common bug causing travellers diarrhea
ETEC
Parasites and ova testing may be indicated if diarrhea has lasted
More than 2 weeks
Treating C. difficile
Metronidazole
Two common GI infections that cause bloody diarrhea
Campylobacter and E Coli O157-H7
What bug is most likely to be responsible for food poisoning
S Aureus
Pt who travels to developing nation and returns with fever, nausea, bloody diarrhea, red spots 1 week after return?
Typhoid fever (Salmonella typhi)
Metabolic causes for paralytic ileus (3)
Hypokalemia, uraemia, hypothyroidism
2 classes of drugs that can cause paralytic ileus
Anticholinergics and narcotics
Ladder pattern on supine abdo XR
Intestinal obstruction
Calorie goal (kcal/kg)
25 kcal/kg
Protein goal (g/kg)
1.5g/kg
Achalasia management options (3)
Botox, dilatation, surgical (heller +/- wrap)
Surgical management of GERD in kids
Fundoplication
Procedure to alleviate intestinal malrotation
LADDs procedure
Condition in which part of the intestine invaginates within another section of the intestine
Intussusception
Condition that occurs when part of the colon has no ganglion cells and cannot function, failure to pass first meconium in infancy
Hischprung’s disease
Class 1 Obesity BMI
30-34
Class 2 Obesity BMI
35-39
Class 3 obesity BMI
40-49
Super obese BMI
> 50
Murphys sign is predictive of what condition?
Cholecystitis
Imaging test of choice for biliary colic
Ultrasound
Hydatid cysts are due to what bug?
Echinococcus granulosis - dog tapeworm
Treating a Hydatid cyst
Surgical resection
Liver abscess that develops following surgery, GI infection, acute appendicitis
Pyogenic liver abscess liver