McGowan Test II Flashcards
CNS defects
hemolysis (low LDH, Anemia, Haptoglobin)
<40yo
is what disease?
Wilson’s
tea colored urine and white clay colored stools
obstruction in the biliary system
grandparents w new onset of DM painless jaundice >65yo direct hyperbilirubinemia epigastric pain when laying down, relief when bending forward ca 19-9 courvoisier sign trousseas sign of malignancy
pancreatic cancer
adenocarcinoma
Crohns, DM, native american race, rapid weight loss are RF for what?
gallstones
mc in pt w cirrhosis
gram neg bacillis - e coli
gram postive - strep, enterococci, pneumococci
only single org is isolated
dx if peritoneal fluid contains 250 pmn
blood cultures bc bacteremia is common
tx: 3rd gen cephalosporin like ceftriaxone or pipercillin tazobactam
spont (primary) bacterial peritonitis
bact contaminate the peritoneum - spillage from intraabd viscus
mixed flora - gram neg bacilli and anaerobes predom
spread to peritoneal cavit - increase pain
pt lies motionless, often w knees drawn up to avoid stretching nerve fibers of peritoneal cavity
invol guarding
dx: radiographic studies to find source or immediate surg intervention, abd tap done only to exclude hemoperitoneum in trauma
tx: antibiotics aimed at inciting flora
surgery needed often
secondary bacterial peritonitis
Epigastric abd p RUQ pain, dyspepsia/ GB disease etiology? Cullen or Grey turner sign crackles, diff breathing - ARDS?
Chvostek (twitch of facial n m) and Trousseau (hand posture w bp inflatition) signs = hypocalcemia
Acute Pancreatitis
Acute Pancreatitis
pathology?
mc cause?
why is there hypocalcemia?
2-3 to dx?
MC imaging follow up? avoid this why?
tx?
Cellular injury from activation of trypsinogen to trypsin in autodigestion of pancreas and peri-pancreatic tissues
Gallstones <5mm, heavy alcohol use, but also hypertriglyceridemia, trauma, meds, ERCP, autoimmune, infections, CFTR, Idiopathic
saponification
epigastric pain
lipase (and amylase) 3 x ULN
CT changes consistent w pancreatitits
Rapid bolus IV contrast-enhanced CT, avoided if serum Cr > 1.5
fluid resuscitation - first thing IV
then tx main cause
two signs you see on xray of acute panc?
sentinel loop - seg of air filled SI (mc LUQ)
colon cutoff sign - gas filled seg of transverse colon abruptly end at area of panc inflamm
- focal linear atelectasis of lower lobe of lung w/ w/o pleural effusion
how to predict severe acute pancretitis?
Ranson criteria
GA - LAW
C & Hobbs
Bedside index for severity in acute panc (BISAP)
- bisap score = BUN >25,
- impaired mental status,
- SIRS 2 of4, age > 60,
- pleural effusion
apache II > 8 = higher mortality
- severely ill pt, predict hospital mortality
complications of acute panc
- intravascular vol dep
- –leaks fluids in panc bed = 3rd spacing
- –ileus w fluid filled loops, Pre-renal azotemia
- fluid collections (pleural effusion)
- necrosis w/ wo infection (including emphysematous pancreatitis)
- –infection needs debridement (high mortality)
- pseudocysts - high amylase
- ARDS -> cardic dysfxn
emphysematous pancreatitis caused by?
could be from c. perfringens, enterobacter aerogenes, enterococcus faecalis
epi pain, steatorrhea (chronic fatty diarrhea), unintentional wt loss fatique pain is cardinal symptom attacks may last a few hours-2 wks steatorrhea - bulky foul fatty stool occurs later in course, exocrine insuff!
Chronic Pancreatitis
Chronic Pancreatitis
mc cause?
dx?
causes?
complications?
alc, Chronic Pancreatitis
decreased fecal elastase <100
glucose/HbA1c - main -> dm after 25 yr chronic
autoimmune panc - elevated IgG4
calcifications on xray/ct
T oxic metabolic: alcoholic (mc) Idiopathic (early onset 23) Genetic: CFTR Autoimmune: celiac, hypergammaglobuminemia - IGG4 Recurrent Obstructive - stricture, stone, tumor
brittle DM, panc insufficiency, panc ca
tumefactive chronic pancreatitis is code for?
panc ca
shows significant steatorrhea = malabsp of triglycerides
wt loss, gas distention and farts, large greasy foul smelling stool diarrhea
fecal elastase <100
others - trypsinogen <20, malabsorption, stim test (cholecystokinin/secretin)
exocrine detection of decreased fecal chymotrypsin
- decreased panc fecal elastase <100
Endocine -DM after 25yrs of chronic P
pancreatic insufficiency
AD, rare, Type 1
endocrine glands benign or malignant
parathyroid
- hyperca, increased PTH
pancreas
- gastrinoma - ZE (mc in duodenum, then panc), PUD
- insulinoma - hypoglycemia = blood sugar drop symp
pituitary
- acromegaly: lots growth of hands, feet, haw, internal organs
- cushing disease
MEN 1
increased bili production, impair bilirubin uptake/storage
unconjugated (indirect)
ie. hemolytic syndrome
gilbert syndrome
impaired excretion, hepatocellular dysfxn, biliary obstruction
conjugated (direct)
ie dubin johnson syndrome rotor syndrome drug rxn pregnancy viral hep crigler najjar intrahepatic cholestasis of pregnancy hepatitis, cirrhosis obstruction
prehepatic, hepatic, post hepatic
transfusions
sickle cell
thalassemia
autoimmune
hepatitis ca cirrhosis congenital disorders drugs
gallstones inflammation scar tissue tumors block flow of bile into intestines
with prehapatic or unconjugated bili, you should order what test?
order CBC (hemolysis!)
- anemia and thrombocytopenia
- haptoglobin, reticulocyte count, LDH to look for hemolysis
- leukocytosis
Peripheral smear - schistocytes, sickle cells
benign, asymp, hereditary, fasting -> increases indirect hyperbilirubinemia, abn lab results, no tx, reduced mortality from cv disease reduced UDGT
gilbert syndrome
reduced excretory fx of hepatocytes benign, asyp hereditary, gb does NOT visualize on oral cholecystography liver dark pigment on examination bx show centrilobular brown pigment
dubin johnson
reduced hepatic reuptake of bilirubin conjugates
sim to DJ but liver isnt pigmented and gb is visualized on oral cholecystography
rotor syndromes
cholestasis benign, 3rd trimester of preg, itching, gi symp, abn liver excretory fxn test cholestatsis noted on liver bx recurrence w subsequent preg or use of oral contraceptives
intrahepatic cholestasis of pregnancy
rapid liver shrinking size
rapid rising bilirubin level
marked prolongation of PT
signs of confusion, disorientation, somnolence,
ascites, edema
leads hepatic failure w encephalopathy
life threatening coagulation abnormalities INR > 1.5
hepatic encephalopathy -> deep coma (cerebral edema)
asterixis
Acute (fulminant) Liver Failure (ALF)
Acute (fulminant) Liver Failure (ALF)
mc causes?
Labs?
complications of ALF
acetaminophen
idiosyncratic drug rxn = sporatic (prescription drugs, antiTB, antiepileptics, antibiotics, herb, dietary supplements)
- rapidly rising bilirubin level + marked prolongation of PT even as AST/ALT levels fall
- in acetaminophen toxicity AST/ALT > 5000uL
- ammonia level elevated -> encephalopathy and intracranial HTN >200
- acetaminophen level ~ use Rumack-Matthew Nomogram
cerebral edema (brainstem compression) and sepsis are the lead causes of death
if acetomnophen OD what should you give?
what factor improves ALF survival?
N acetylcysteine (NAC) in acetomnophen OD
meticulous intensive care + prophylactic antibiotic coverage = one factor improves survival
viral, drugs, ischemia can cause this
RUQ pain = tenderness over liver, jaundice, hepatomegaly, skin changes, abd p
aversion to smoking?
acholic stools
what dx test should you run?
tx?
Acute Hepatitis
CBC
CMP
- liver enzymes, total bili, albumin, renal fxn
PT/INR
acetaminophen level - use rumack-matthew nomogram
N-acetylcysteine aka NAC or Mucomyst
ssRNA
acholic stools
aversion to smoking
n/v/anoexia, malaise, ruq p or epigastric, fever, hepatomegaly, jaundice, arthralgia, tires easy, UR symp, diarrhea/const
acute only
international travel, inadequately cooked shellfish
fecal-oral
international travel, inaqequately cooked shellfish
HAV
what do you see on HAV Labs?
elevated aminotransferases (AST/ALT) - hepatocellular elevated bilirubin and ALP = cholestasis
IgG & IgM Anti-HAV both are detectable in serum soon after onset
dx w IgM anti-HAV
IgG anti-HAV indicates previous exposure to HAV, non infectivity and immunity
partially dsDNA
n/v/anoexia, malaise, fever, hepaatomegaly, jaundice
Acute - 2/3 wk
Chronic - 5-10%
MSM, inject drugs, ppl at hemodialysis, healthcare workers, jailers, tx sexually transmitted diseases
- parenteral, sexual, perinatal
- infected blood or b. products - -percutaneous from needle
- perinatal - endemic in sub-saharan africa and SE asia
- HBsAg + mom may transmit to bb in delivery, risk of chronic infection in bb is high
cirrhosis (esp w HDV), hepatocellular carcinoma
HBV
what is the window period of acute hbv?
why is this usefully clinically?
bw HBsAg disappearing and HBsAb appearing, pt still considers acute HBV, only detectable w HBcAb IgM
important to screen blood donations
IgM Anti-HBc
window period
IgM Anti-HBc
HBsAg
HBeAg
HBV DNA
acute infection
Anti-HBs
IgG Anti-HBc
prior infection
HBsAg
IgG Anti-HBc
HBV DNA?
chronic infx, inactive
HBsAg IgM Anti-HBc IgG Anti-HBc HBeAg HBV DNA
chronic infx, active
Anti-HBs
immunization
what do all these mean?
IgG Anti-HBc
HBeAg + HBV DNA
IgM Anti-HBc
Anti-HBs
HBsAg
not infectious
active viral relication
acute HBV
exposed to virus
have the virus
defective RNA virus that requires HBV
co infects w HBV or superinfects a chronic HBV carrier
non percutaneous or percutaneously in HBsAg (active) IV drug users or hemophiliac transfusion
HDV RNA - pcr
vacc against HBV
HDV
ssRNA
marked fluctuating elevations of serum aminotransferase levels
mc chronic - 8wk
HCV Ab in serum,
- most sensitive indicator is HCV RNA
- anti-HCV in serum w/o RNA -> recovery from prior infection
non to HCV, chronic liver dz should be vass against HAV and HBV
birth cohort screening of person born bw 45-65 (bb boomer) for HCV infection, all over 18 should have 1 lifetime screening
curable w proper tx
HCV
HCV RF?
complications
-coinfection w HIV, developing world unsafe med practices
-pt has tranfusion related hepatitis, HCV >90% cases
I
-IV drug use, intranasal
-bloody fights, incarceration in prison
cirrhosis, HCC, HIV coinfection
mixed cryoglobulinemia, decrease serum cholesterol
ssRNA herpevirus
immunocompromised host
endemic/epidemic form in Asia, ME, N africa, central america, india
HEV Ab, PCR for HEV RNA
clinical trials
high rate in pregnant women
acute = no carrier state
transplant pt, tx w tacrolimus instances of chronic w progression to cirrhoisis
HEV
dose-dep (direct hepatotoxins) - w/in 48hrs
- e.g. acetaminophen, tetracyclines, mushrooms
variable dose and time of onset
fever rash arthralgias eosinophilia
e.g. isoniazid, sulfonamides, methyldopa
supportive tx
- include gastric lavage and oral admin of charcoal or cholestyramine
w/in 1 hour post ingestion esp w acetaminophen
liver transplantation
acetaminophen overdose
- NAC after the 1hr as above
Toxic and Drug Induced Hepatitis (DILI drug induced liver injury)
tylenol/acetaminophen overdose - tx
*use rumack-matthew nomogram
tx w N acetylcysteine aka NAC if in toxic area
important to get 4hr acetaminop
therapy win 8 hr of ingestion
- critical ingestion tx interval for max protection against severe hepatic injury is bw 0-8hrs
SAAG > 1.1
occlusion of flow to hepatic v or IVC
caval webs, R side herat fail -> nutmeg liver
fx that predispose pt to hepatic v obstruction
- such as hereditary or acquired hypercoag states (polycythemia vera)
occlusion of flow in hepatic v or ivc
Hepatic vein obstruction - Budd Chiari Syndrome
Budd Chiari Syndrome tx and imaging?
imaging
- prominent caudate liver lobe
- screen test of choice is contrast enhanced US
- color or pulsed doppler ultrasonography
- direct venography
—delinate caval webs and occluded v = spider web pattern
- liver bx
—centrilobular congestion - nutmeg liver
hepatocellular carcinoma
symptomatic tx, anticoag, thromboylytic, liver transplant
mc cause jaundice in preg
viral hepatitis
maternal HTN, proteinuria, peripheral edema, coag abn
HELLP syndrome
severe elvation of serum aminotransferases, mild elevation of bili
pre-eclampsia
hemolysis, elevated liver enzymes, low platelets
eclampsia is?
HELLP + hyperreflexia + convulsions = eclampsia = life threatening
tx: termination of preg