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WorksheetsClin Lab Exam III - GI labs
Total questions: 47
Worksheet time: 26mins
LFTs include which of the following?
Transaminases (ALT, AST)
Alkaline phosphatase
Total bilirubin
Albumin
Protein
Which of the following not a function of the liver?
Makes bile and recycles old RBCs
Metabolizes drugs and filters the blood
Aids in digestion and performs gluconeogenesis
Makes clotting factors and platelets
Stores bile between meals and synthesizes RBCs
This enzyme found only in liver tissue and when elevated is suggestive of hepatocellular injury.
Aspartate aminotransferase (AST)
Alanine aminotransferase (ALT)
Erythropoietin (EP)
Alkaline phosphatase (ALP)
Common causes which may result in ALT and AST that are elevated <5 times the UNL (AST: 10-40 u/L, ALT: 7-56 u/L) includes which of the following?
Alcohol abuse
Cirrhosis
Chronic hepatitis B or C
Steatosis or steatohepatitis
Medications and toxins
Evaluation of liver chemistries include all of the following except
PTT and CBC with PLTs
Hepatitis A,B,C serotypes
serum iron, TIBC, ferritin
Lipase and amylase
A patient presents to the ED for abdominal pain. LFTs show transaminitis with ALT of 75 (10-40 u/L) and AST of 187 (7-56 u/L). This ALT:AST ratio is indicative of which of the following?
Acute hepatic injury
EtOH injury
Acute viral hepatitis
Drug/toxin induced hepatitis
Medications classes that can cause LFT elevations include which of the following?
NSAIDs
β-blockers and CCBs
PPIs
Antibiotics & antifungals
TCAs and anticonvulsants
The most common cause of acute liver failure in the US is?
Acetaminophen
Hepatitis infection
Pregnancy
Wilson's Disease
A patient with a hx of IVDA is admitted to the ICU after being found to have acute liver failure. 2 weeks later his ALT and AST have returned to WNL, but he has hypoalbuminemia, an increased PTT, and thrombocytopenia. Which of the following would be you be most concerned about in this patient?
Acute Hepatitis
Chronic Hepatitis
Cirrhosis
Fulminant liver failure
Markedly high transaminitis with ALT:AST >5x UNL (AST 10-40 u/L, ALT 7-56 u/L) raises concern for which of the following?
Cirrhosis
Acute viral hepatitis
Toxin/drug induced hepatitis
Ischemia/Infarction
NAFLD
To determine the presence of acute HAV infection, which of the following lab should be ordered?
IgM anti-HAV
IgG anti-HAV
IgM anti-HBc
HCV genotype
Immunity from HAV from either vaccination or previous infection will show which of the following?
Total HAV antibody positive
Total HAV antibody negative
IgM anti-HAV positive
IgM anti-HAV negative
Which of the following is most indicative of acute HBV infection?
HBsAb
anti-HBc IgM
HBV-DNA
anti-HBc IgG
A patient presents to your clinic for routine wellness check. When discussing vaccination the patient reports receiving the HBV, but would like to check a titer to confirm immunity. Which of the following tests should you order?
HBsAg
HBsAb
HBeAg
HBV-DNA
A patient is dx with Hep B. Their initial viral load is 2000 IU/mL or 2000 x 104 copies/mL. The patient is started on TDF and instructed to follow-up. On repeat visit which lab test would be most helpful to assess the patients response to treatment?
HBsAg
HBsAb
HBeAg
HBV-DNA
anti-HBc IgG
The period in which HBsAg declines and HBsAb begin to accumulate typically occurring around 22 weeks after exposure is known as the ______ window?
symptomatic
infectious
convalescing
serologic
prodromal
To check for exposure to HCV which of the following tests should be ordered?
HCV-RNA Ab
HCV genotype
HCV quantaSure
HCV fibrosure
AFP
You are working at a GI clinic. A patient with a hx of chronic HCV presents for routine follow-up. They state during their last visit the hepatitis specialist told them they needed a "blood biopsy" to check for cirrhosis. Which of the following tests would you order to screen for cirrhosis?
HCV-RNA Ab
HCV genotype
HCV quantaSure
HCV fibrosure
AFP
Unconjugated bilirubin from old RBCs undergoes conjugation in which organ?
Liver
Gallbladder
Stomach
Pancreas
Small intestine
Bilirubin is bound to what protein to become conjugated bilirubin?
Albumin
AFP
Collagen
Thrombin
Lack of albumin production in the liver can result in increased levels of unconjugated bilirubin in the blood. This lipid soluble molecule can bypass the blood brain barrier resulting in a condition known as?
Kernicterus
Sepsis
Meningitis
Hyperammonemia
The most common causes of conjugated hyperbilirubinemia is decreased transport of bilirubin into the bile canaliculus or biliary tract obstruction.
True
False
Which of the following is not a symptom of hyperbilirubinemia?
Pruritus
Jaundice
Scleral icterus
Clay colored stool
Pale, lightly colored urine
A 28 y/o AA F presents to your clinic after noticing some yellowing tinting of her eyes and skin. PMH is positive for sickle cell anemia. Labs show an elevated bilirubin of 5.2 mg/dL (0.3-1.2 mg/dL) and LDH of 316 (140-280 U/L). You suspect this patient has what form of hyperbilirubinemia?
Conjugated
Unconjugated
An 18 y/o M presents to the ER complaining of jaundice. The patient reports that he is currently taking his final exams in college and has been up all night cramming and eating junk food. He states he is asymptomatic and PE is unremarkable. Total bilirubin is 3.0 mg/dL (0.3-1.2 mg/dL) and direct bilirubin is 0.1 mg/dL (0.0-0.2 mg/dL). What is the most likely diagnosis?
Acute hepatitis
Gilbert's syndrome
Fatty liver disease
Biliary atresia
Obstruction of bile flow from the liver which show an elevation in which of the following labs?
Alkaline phosphatase
Albumin
PT
AFP
In situations where Alkaline phosphatase is elevated, what other labs should be ordered to help guide the diagnosis?
Gamma glutamyl transpeptidase
5'-nucleotidase
erythropoietin
beta natriuretic peptide
25-hydroxy vitamin D
Elevations of AST/ALT compared to Alk phos are concerning for cholestasis.
True
False
GGT increases with age in men, but not in women.
True
False
Patients with chronic alcohol use who drink ≥3 beverages/day GGT has a limited specificity.
True
False
Gamma glutamyl transpeptidase plays an important role which of the following functions of the liver?
Makes bile and recycles old RBCs
Metabolizes drugs and filters the blood
Aids in digestion and performs gluconeogenesis
Makes clotting factors and platelets
Storage of vitamins and protein synthesis
A patient that is currently pregnant would likely have an increase in which of the following tests?
Alk phos
GGT
5'-NT
HBs Ag
A patient with a hx of chronic HCV infection presents for follow-up. Screening labs show an AFP of 25 ng/mL. Elevations of AFP are most indicative of what form of hepatic malignancy?
Hepatocellular carcinoma
Intrahepatic cholangiocarcinoma
Hemangioma
Angiosarcoma
Elevated AFP is a diagnostic test for the presence of HCC?
True
False
Which of the following measure the synthetic function of the liver?
Transaminases (ALT, AST)
Platelets
Total bilirubin
Albumin
PT
S/Sx of hypoalbuminemia include which of the following?
Edema
Ascites
Moon facies
Hyperventilation
Albumin plays a role in maintaining oncotic pressure of blood vessels, thereby keeping fluid ___ blood vessels and ____ surrounding tissue.
in, in
in, out of
out of, out of
out of, in
Which of the following is not associated with hypoalbuminemia?
Advanced cirrhosis
Malnutrition
Nephrotic syndrome
Severe burns
Dehydration
Which of the following measures the duration that a sample of blood takes to coagulate?
PT
Alkaline phosphatase
Total bilirubin
Albumin
Patients who have cirrhosis will have an ____ PT/INR.
increased
decreased
If a patient has cirrhosis and thrombocytopenia, what diagnostic study can be performed that can potentially be life saving?
EGD
Cardiolite stress test
CT abd/pel
HIDA scan
Which of the following may be the reason for development of ascites?
Portal HTN
Hypoalbuminemia
Peritoneal disease
Lymphatic or pancreatic duct disease
Which of the following ascitic fluid tests is the best screen for the presence of portal HTN?
Cell count and diff
Gross appearance
Serum to ascites albumin ratio
Protein concentration
A SAAG of ___ g/L or greater can predict portal HTN with 97% accuracy.
1.0
1.1
0.9
0.5
An ascitic fluid with a protein concentration of <2.5 g/dL is suggestive of a _____ cause, while a protein concentration of >2.5 g/dL is suggestive of a _____ cause.
exudative, transudative
transudative, exudative
A patient with a hx of chronic ascites presents to the ED for severe abd pain that began 2 hours ago. Bedside paracentesis revels the following:
Gross appearance: Turbid (Clear)
Cell Count: WBC 750/uL (<250/uL), RBC: None (None)
Total Protein: 8g/dL (0.3-4.0g/dL)
Glucose: 5 mg/dL (7-10mg/dL)
Next step in treatment for this patient should include which of the following?
Antibiotics
US
CT abd/pel
PPIs
Patients with a ascitic fluid protein concentration <1 mg/dL have an increased risk of spontaneous bacterial peritonitis
True
False
