UW Flashcards
liver enzyme levels typical of alcoholic liver disease?
AST:ALT ratio of atleast 1.5, AST rarely more than 300 units/L
complication of critical illness that arises 2ndary to gallbladder stasis and presents w Sxs of biliary obstruction? what will be more elevated than the AST and ALT?
Acalculous cholecystitis;
Alk phos and total bilirubin levels
the hallmark of this is a rapid and massive increase in AST and ALT with modest elevations in total bili and alk phos
ischemic hepatic injury following hypoTN ie from septic shock or HF
pts with WPW Sy who develop a fib w RVR should be treated with what is stable? if unstable?
antiarrhythmics such as procainamide;
immediate cardioversion
ventilation-perfusion scan is used to Dx? which typically presents with what Sxs?
PE;
dyspnea, tachypnea, pleuritic chest pain, S/Sxs of DVT
acute limb ischemia (cold, mottled, puseless) after MI suggests possible ____ from….? Management?
arterial embolus from LV thrombus;
immediate anticoagulation, vascular surg consult, echo (to screen for LV thrombus)
presents with hematuria, RBC casts, acute renal failure, HTN, and edema ?
glomerulonephritis
Pts present w. fever, rash, AKI, and eosinophiluria w. WBC casts? most commonly d/t?
Interstitial nephritis;
drug rxn
ARP represents the excess risk in an exposed pop. that can be attributed to the risk factor, how can it be derived from RR?
ARP = (RR-1)/RR
patient has severe hyperkalemia and ECG shows lack of p waves, QRS widening and bradycardia, next step in Mx? then?
IV Ca++ gluconate to stabalize cardiac membrane;
IV insulin w glucose, beta- agonists to transiently shift K into cells lowering serum levels
after transient measures what definitive measures can reduce total body K?
reversal of correctable etiology (ie IV fluids for pre-renal AKI), diuretics (dont use if dehydrated), exchange resins, hemodialysis
warfarin dose is typically adjusted to achieve a therapeutic INR value btwn?
2 and 3
(nml INR is 0.8-1.1
chronic pancreatitis is MC d/t alcohol use and can present with N/V and abd pain radiating to back, imaging typically reveals?
pancreatic calcifications
Tumors in the head of the pancreas can present w weight loss, painless jaundice, non-tender distended gallbladder on exam, characteristic imaging finding?
Intra- and extrahepatic biliary tract dilation
pancreatic tumors are MC where? and present with?
head of pancreas;
weight loss, jaundice (itching, pale stools, dark urine), non-
tender distended gallbladder
when would pancreatic cancer present with abdominal pain without jaundice?
cancers in the body or tail of pancreas
pt presents after episode of binge drinking w N/V, severe epigastric pain that radiates to the back but otherwise stable, next best step in Mx?
serum amylase and lipase
if levels are more than 3x nml then imaging would not be needed to Dx acute pancreatitis
type of dementia characterized by fluctuating cognition, bizarre visual hallucinations and parkinsonism
Dementia with Lewy bodies
chronic use of _____ can cause painless proximal muscle weakness esp in legs, ESR and CK will be nml, slowly improves after stopping offending med
glucocorticoids (ie glucocorticoid- induced myopathy)
presents w aching and morning stiffness w pain and decr ROM in shoulder, neck and hips, nml strength, can be seen in up to half of pts w temporal arteritis? ESR will be? Mx?
Polymyalgia rheumatica;
ESR usually more than 40;
Sxs improve rapidly with glucocorticoids
NF type 1 is c/b cafe-au-lait macules, freckling in skin folds, Lisch nodules, and neurofibromas, kids may also develop ____ which manifest w unilateral vision loss, proptosis, esotropia, and optic disc pallor
optic pathway gliomas
this type of heart block is due to delayed impulse transmission from A to V, leads to prolonged (but constant) PR interval (more than 0.20s), there is a QRS for every p wave
first degree AV block
Type of heart block w no impulse conduction from A to V, ECG shows p waves completely unrelated to QRS
third-degree ie complete AV block
Toxic megacolon is a med emergency that requires prompt..
IV steroids, NG decompression, ABXs and fluid management
imaging of choice if pt presents in ER w unprovoked first seizure and possible head trauma ?
brain CT withOUT contrast to exclude intracranial or subarachnoid bleed
most sensitive in identifying structural causes of epilepsy thus imaging modality of choice in nonemergency/elective situations?
MRI
causes HA, fever, focal neuro deficits and altered mental status in pts w advanced HIV (CD4 less than 100/mm3), MRI of brain reveals multiple ring-enhancing lesions? Tx?
Toxoplasmosis;
Sulfadiazine and pyrimethamine (plus leucovorin to prevent hematologic side effects)
fever and sore throat in any pt taking antithyroid drugs suggests? (the most feared ADR of PTU and methimazole) the most imp NEXT step?
agranulocytosis (caused by immune destruction of granulocytes); STOP the antithyroid drug and measure WBC count
Calcium level of 13.5, should be what until proven otherwise
malignancy
when is carotid endarterectomy indicated?
pts with symptomatic carotid artery stenosis of 70-99%, men with ASx stenosis of 60-99% may also benefit
this drug rapidly breaks down serum uric acid and can be used for Tx of hyperuricemia and tumor lysis syndrome?
Rasburicase
MC malignancy of the lower lip? Bx c/b?
SCC; invasive cords of squamous cells w keratin pearls
Hallmark triad of nml pressure hydrocephalus?
dementia, gait disturbance, urinary incontinence
(wacky, wobbly, and wet), the memory impairment is very slow and progressive
CT or MRI shows what in nml pressure hydrocephalus?
dilated ventricles
which Graves disease Tx option can worsen ophthalmopathy? what can be used to minimize this effect?
radioactive iodine;
glucocorticoids and antithyroid drugs can be given first
Pts present w weakness of contralateral face, arm and leg (pure motor hemiparesis), and a noncontrast CT shortly after event will look nml (no sensory loss, seizures or cortical signs)?
Lacunar stroke (microatheromas and lipohyalinosis lead to thrombotic small-vessel occlusion of penetrating arteries)
Tx of actively bleeding esophageal varices?
place 2 large-bore IVs, volume resuscitation, IV octreotide, ABX prophylaxis then urgent endoscopic therapy
this statistical method is used to compare the means of 3 or more variables?
Analysis of variance (ANOVA)
DOC for pregnant/lactating pts and kids less than 8yo w early localized Lyme disease (erythema migrans)?
Amoxicillin
since Doxy can cause permanent teeth discoloration and retard skeletal development
Should be suspected in pts with HTN, hypercalcemia, kidney stones, and depression?
Hyperparathyroidism
an uncommon cause of secondary HTN
poisoning with this causes hypocalcemia and Ca oxalate crystals.. pts develop flank pain, hematuria, oliguria, AKI, anion gap met. acidosis (low bicarb)?
Tx?
Ethylene glycol ingestion;
Fomepizole or ethanol, sodium bicarb for acidosis, hemodialysis may be needed in severe cases
Tx for moderate to severe COPD exacerbations?
O2 (target SpO2 of 88-92%), inhaled bronchodilators, systemic glucocorticoids, ABXs (may need NPPV or intubation)
EKG with diffuse ST elevation w the exception of reciprocal depression in aVR is classic for?
pericarditis
a couple weeks after an MI a pt has S/Sxs of pericarditis, elevated ESR, most likely? Tx?
Dressler’s Syndrome;
NSAIDs (corticosteroids used in refractory cases or if NSAIDs CI) (avoid anticoagulation)
In the absence of clear provoking factors (ie recent procedure, immobilization), pts w a first episode of VTE should be referred for?
chest x-ray and age appropriate cancer screening (ie colonoscopy, mammogram)
the Number needed to treat is ? how is it calculated?
the number of ppl that need to receive a Tx to prevent 1 additional adverse event; NNT=1/ARR
Causes of secondary gout due to increased urate production?
Myeloproliferative/ lymphoproliferative disorders, Tumor lysis syndrome, HGPRT deficiency (Dxed in childhood)
Causes of secondary gout d/t decreased urate clearance?
CKD, thiazide/loop diuretics
Pruritis triggered by hot water, hepatosplenomegaly, HAs, and gout together suggest? which is c/b?
Polycythemia vera;
incr cell turnover d/t clonal hyperproliferation in all 3 primary bone marrow lineages
can cause invasive infections in pts with weak immune systems who have dental infections/trauma (extraction) -nonpainful mandible mass that drains yellow granules ? Tx?
Actinomyces (filamentous G+ rods w branching);
PCN for 2-6mos, surgery if severe
_______-induced psychosis is c/b delusions, hallucinations, disorganized thoughts and aggression
corticosteroid
c/b severe hyperglycemia, high serum osmolality (320+), nml anion gap, bicarb greater than 18, neg or small serum ketones? clinical symptoms?
Hyperosmolar hyperglycemic state; altered mental status, gradual onset of hyperglycemic Sxs, hypovolemia and dehydration
the Altered mental status seen in pts with hyperosmolar hyperglycemic states is d/t?
high serum osmolality
Urine sample staining positive with Prussian blue indicates?
presence of hemosiderin, which is found in urine during hemolytic episodes
G6PD deficiency causes hemolytic anemia d/t? Hemolytic episodes can be precipitated by?
oxidative injury to RBCs;
infection or meds (esp Sulfa drugs, antimalarials and nitrofurantoin)
an older pt w long standing hypothyroidism presents w new onset hoarseness, dysphagia, mild fever, diffusely enlarged, firm, mildly tender thyroid, nml TSH and elevated anti-TPO Abs. Dx?
Thyroid lymphoma, which is much more common in pts w preexisting chronic lymphocytic (Hashimoto) thyroiditis as in this pt
Typical presentation of thyroid lymphoma?
rapidly enlarging firm goiter assoc w compressive Sxs ie hoarseness/dysphagia. As w other lymphomas- pts may have systemic B Sxs (fever, night sweats, weight loss)
c/b progressive fibrosis of the thyroid gland and surrounding tissues, Sxs are chronic and slowely progressive
Riedel thyroiditis
Typically follows an acute viral Sy and presents w fever, neck pain, and a tender diffuse goiter. Pts commonly thyrotoxic d/t release of preformed thyroid hormone
Subacute (de Quervain) thyroiditis
Infliximab ?
drug that blocks TNF-a, used to treat inflammatory conditions ie RA, crohns, psoriasis - it suppresses immune system
RUQ/epigastric pain that radiates to right scapula or shoulder think?
Acute Cholecystitis/biliary colic
Overproduction of calcitriol (active form of vit D) is seen in what kind of diseases?
granulomatous- such as sarcoidosis and TB
most pts w this are ASx but can get skeletal deformities, bone pain/fractures. Involvement of cranial bones may lead to HAs and hearing loss
Paget disease (c/b osteoclast dysfxn)
This is used primarily to treat infections w anaerobic organisms and is the ABX of choice in aspiration pneumonia
Clindamycin
Sxs seen in Legionnaires’ disease that distinguish it from other causes of CAP?
GI Sxs (D/V), high fever, neuro Sxs (confusion, ataxia). Hyponatremia and hepatic dysfxn are common
Tx of Legionella pneumonia?
fluoroquinolones or macrolides
Hypothyroidism can cause additional metabolic abnormalities such as?
hyperlipidemia, hyponatremia, and asymptomatic elevations of CK, AST and ALT
occurs as a response to severe infection and is c/b more than 50,000 WBCs, more metamyelocytes then myelocytes, and high leukocyte alkaline phosph?
Leukemoid reaction
This drug can treat cholesterol gallstones in pts w mild Sxs who cant get cholecystectomy, also Tx for PBS and PSC
Ursodeoxycholic acid
Pts typically have pruritis, fatigue, jaundice, abd pain, and Antimitochondrial Abs
Primary biliary cirrhosis
Recommended vaccines for pts with chronic liver disease?
Tdap once then Td every 10yrs, Flu, PPSV23 once then PCV13 and PPSV23 at age 65, if sero negative need Hep A and B
Pt attempts suicide and ODs on acetaminophen, in hospital pt develops scleral icterus and asterixis, PT goes up to 120s, total bili, AST and ALT get very high, next best step?
Refer to liver transplant center (ALF defined as elevated AST/ALT often 1,000+, hepatic encephalopathy and synthetic liver dysfxn- prolonged PT w INR more than 1.5)
most common cause of death following acute liver failure?
cerebral edema that leads to coma and brain stem herniation
in ALF due to acetaminophen toxicity, liver transplant is firmly indaicated in pts with?
grade 3-4 hepatic encephalopathy, PT more than 100s and serum Cr more than 3.4mg/dL
the most common cause of hypernatremia is hypovolemia, mild cases can be treated with? and severe cases with?
mild: 5% dextrose (or 0.45% saline);
0. 9% saline until vol deficit restored then switch to hypotonic fluid (5% dextrose in water prefferred)
Goal rate of plasma sodium correction is no more than?
1mEq/L/hr
This infection usually causes subacute meningitis in pts w/ HIV, esp CD4 counts less than 100, can also cause severe pneumonia in these pts
Cryptococcal
typically presents w subacute fever, dyspnea, and cough in pts w CD4 counts less than 200, CXR is often nml or shows diffuse alveolar infiltrates
Pneumocystis pneumonia
Pts typically present w subacute or chronic Sxs- fever, fatigue, cough, weight loss, night sweats; upper lobe cavitary lesions are common on CXR
TB
4 MCCs of cirrhosis in the US?
Viral hep (C more than B), chronic alcohol abuse, NAFLD, and hemochromatosis
X-rays of pts w long-standing, poorly controlled RA will reveal?
periarticular osteoporosis, joint erosions and joint space narrowing
Avascular necrosis of bone is MC in pts with?
systemic corticosteroid use, heavy alcohol use, SLE, or sickle cell disease
2 weeks following knee surgery pt presents w sudden onset dyspnea, nonprod cough, tachycardia, mild hypoxia, highly suggestive of? test of choice?
PE; CT angiography (TOC in stable pts with likely acute PE, and empiric anticoagulation is often appropriate)
which metal in jewelry is most likely to cause allergic contact dermatitis? most pts respond well to?
Nickel;
topical corticosteroids and elimination of exposure
modified CHADS-VASc score is used for stroke risk assessment, it stands for?
CHF HTN Age (75+) (2) DM Stroke/TE/TIA (2) Vascular disease Age 65-74 Sex category (ie female)
Most imp pre-disposing factor assoc w developing aortic dissection?
HTN
condition responsible for almost 50% of aortic dissections in pts less than 40yo? (but an uncommon cause in pts 60+)
Marfan Sy
Most appropriate tests to Dx acute hep B infection?
test serum for HBsAg and anti-HBc
Urinalysis in contrast induced nephropathy (CIN) typically shows? CIN usually begins to resolve within?
muddy-brown granular cell casts;
3-5days
should be suspected in pts w multisystem involvement with renal failure, eosinophilia, cerebral or intestinal ischemia, hollenhorst plaques, and livedo reticularis/blue toe Sy after recent arteriography or cardiac cath
Cholesterol crystal embolization (atheroembolism)
what findings on CXR suggest thoracic aortic aneurysm?
widened mediastinum, incr aortic knob, tracheal deviation
Ascending aortic aneurysms are MC d/t?
Descending ones are MS d/t?
cystic medial necrosis or CT disorders;
atherosclerosis
holosystolic murmur that increases in intensity with inspiration?
tricuspid regurg (augmentation of intensity with inspiration means it is a right sided systolic murmur)
what is the preferred HIV screening test?
HIV p24 antigen and HIV Ab testing
plasma HIV RNA if pt has neg serologic tests but high clinical suspicion of acute HIV
who should be screened for Hep C?
those who use injection drugs, have a high-risk needle stick exposure, or received blood transfusions before 1992
chest CT showing a wedge-shaped infarction is virtually pathognomonic for?
PE
3 MCCs of chronic cough (more than 8wks)?
upper-airway cough Sy (post-nasal drip- improves with antihistamines), asthma and GERD
this marine bacterium primarily causes infection via raw oyster consumption or wound infections which can be mild or rapidly severe- nec fasc w hemorrhagic bullous lesions and septic shock? Tx?
Vibrio vulnificus;
IV ceftriaxone and doxy
pts w what conditions are at incr risk of vibrio vulnificus infection?
those w liver disease (cirrhosis, hepatitis) or Hereditary hemochromatosis (iron acts as growth catalyst)
In a fib w/ RVR, rate control should be attempted initially with?
if pt with rapid a fib is unstable what is indicated?
beta-blockers or Ca-channel blockers
seen primarily in pts w HIV (CD4 less than 100), vascular skin lesions- red/purple papules to friable pedunculated or nodular lesions, constitutional Sxs, +/- organ (CNS, liver, bone) involvement? Tx?
Bacillary angiomatosis ;
Doxy or erythromycin (plus need antiretrovirals)
seen in HIV pts w CD4 less than 50:
1) causes constitutional Sxs and GI sxs (D, abd pain)
2) causes retinitis, colitis, pneumonitis, encephalitis and other organ involvement
1) disseminated MAC;
2) CMV
sudden-onset dyspnea, tachycardia, chest pain with pleural effusion but no consolidation on CXR suggests? confirmatory test?
PE;
CT pulm angiography
CXR findings of TB ?
hilar adenopathy and/or cavitary/patchy lung lesions (solitary nodules are not typical)
MC type of lung ca in both smokers and nonsmokers? nonsmokers usually only get this kind of primary lung ca.
presents with?
Adenocarcinoma;
peripherally located solitary lung nodule, w/ or w/o Sxs
what is considered resistant HTN? all pts with it should be evaluated for?
persistent HTN despite using atleast 3 diff classes of antihypertensive (one being a diuretic); secondary causes