Internal Medicine Uworld Flashcards
Paget’s Disease (H/N/L): Serum Ca, phosphorous, alk phos, and urine hydroxyprolin
Normal Ca and Phosphorous
High alk phos and urine hydroxyproline (derived from breakdown of collagen)
What are the preferred modalities for diagnosing a ureteral stone?
ultrasound or NONcontrast spiral CT
Name 6 categories of drugs associated with acute pancreatitis
1) anti-seizure (valproate); 2) diuretics (furosemide, thiazides); 3) drugs for IBD (sulfasalazine, 5-ASA); 4) immunosuppressive (azathioprine); 5) HIV (didanosine, pentamidine); 6) abx (metronidazole, teteracycline)
Jugular venous pulse tracing shows prominent x and y descents, dx?
constrictive pericarditis
__ and __ are the two most common causes of cor pulmonale, which develops due to __.
COPD and PE
pulmonary hypertension
Name two hallmarks of secretory diarrhea and what you expect to see on the SOG (stool osmotic gap)
1) large daily stool volumes (gt 1L/day); 2) diarrhea that occurs even during fasting or sleeping; SOG is low usually lt 50 mOsm/kg
What is the equation for SOG (stool osmotic gap)
SOG = plasma osmolality - 2 x (stool Na + stool K)
(plasma osmolality is considered equivalent to measured stool osmolarity and the 2nd half of equation is calculated stool osmolality)
Diagnosis of COPD requires an FEV1/FVC ratio of less than ___.
0.7
Name 3 main symptoms of primary hyperparathyroidism
1) hypercalcemia (polyuria, polydipsia); 2) kidney stones; 3) neuropsychiatric presentations (confusion, depression, psychosis)
bones, stones, abdominal groans, psychiatric overtones (also can cause HTN)
Name 8 causes of high anion gap metabolic acidosis
MUDPILES - methanol, uremia, DKA, paracetamol/acetaminophen, iron/isoniazid, ethylene glycol, salicylates/aspirin
How do you tx diffuse esophageal spasm (main and 2 alternates)? How does it present (2)?
CCBs (diltiazem); alternates: nitrates or tricyclics; intermittent chest pain and dysphagia for solids and liquids
(uncoordinated, simultaneous contractions of esophageal body)
Name 4 of 8 etiologies of avascular necrosis
1) steroid use; 2) alcohol use; 3) SLE; 4) antiphospholipid syndrome; 5) hemoglobinopathies (e.g. sickle cell); 6) infxns (osteomyelitis, HIV); 7) renal transplantation; 8) decompression sickness
Name 4 common lab findings in multiple myeloma
1) normocytic anemia; 2) renal insufficiency; 3) hypercalcemia; 4) monoclonal paraproteinemia
pH decreases by about __ for every __ mm Hg of acute increase in PaCO2
0.08; 10
Name two symptoms almost always present in Chikungunya infxn
high fever and severe polyarthralgias (also often see lymphopenia and thrombocytopenia)
Suspected cauda equina, imaging?
MRI lumbar spine
anti__ and anti__ antibodies are present in over 90% of Hashimoto’s thyroiditis
TPO (thyroid peroxidase) and thyroglobulin
Afib is most commonly caused by ectopic foci within the __. Atrial flutter commonly involves reentrant circuit around the __.
pulmonary veins; tricuspid annulus
What is the major toxicity of azathioprine (3)? Mycophenolate (1)? Btwn tacrolimus, cyclosporine, azathioprine, and mycophenolate, which can cause gingival hypertrophy and hirsutism?
dose related diarrhea, leukopenia, and hepatotox; bone marrow suppression; cyclosporine
Name 6 causes of normal anion gap metabolic acidosis
1) diarrhea; 2) fistulas (pancreatic, ileocutaneous); 3) carbonic anhydrase inhibitors; 4) renal tubular acidosis; 5) ureteral diversion (ileal loop); 6) iatrogenic
In a woman, elevated testosterone levels with normal DHEAS suggest a __ source. Elevated DHEAS levels suggest a __ source.
ovarian (more common); adrenal (less common)
___ is the imaging modality of choice for the diagnosis of cavernous sinus thrombosis
MRI with MR venography
Howell-Jolly bodies are __. They are seen in pts with a hx of __ or __.
remnants of the RBC nucleus; splenectomy or functional asplenia
Macular degeneration affects __ vision. Atrophic (dry) causes unilateral/bi fast/slow vision loss, and exudative/neovascular (wet) causes unilateral/bi fast/slow vision loss. Which one shows drusen and patchy depigmentation in the macular region?
central;
Dry - bilateral progressive (slow)
Wet - unilateral, aggressive (fast)
dry MD
Osmolal gap = ?
measured serum osmolality - calculated serum osmolality
calculated = 2xNa + glucose/18 + BUN/2.8
Name 3 things that cause HAGMA and an osmolal gap
1) ethanol (most common); 2) ethylene glycol (urinary calcium oxalate crystals); 3) methanol (blindness)
This tick borne illness presents with flu-like symptoms and leukopenia and thrombocytopenia. How do you tx?
Ehrlichiosis; doxy
True positive rate describes the __ of the test.
sensitivity
true negative rate is specificity
Moraxella catarrhalis primarily causes __ in children and __ in adults
otitis media; COPD exacerbation
Albuminocytologic dissociation (elevated CSF __ with a normal __ on LP) is characteristic of __
protein; cell count; Guillain-Barre syndrome
The presence of 14-3-3 protein in CSF indicates a __.
Neurodegenerative prion disease (e.g. CJD)
Name 5 medications that can cause hyperkalemia
1) b-blockers; 2) ACEi/ARBs; 3) K+ sparing diuretics; 4) cardiac glycosides (digoxin); 5) NSAIDs
(also trimethoprim, heparing, cyclosporine, and succinylcholine)
Uncontrolled hyperglycemia due to insulin deficiency can shift potassium in/out of cells to cause hyper/hypokalemia
out of cells; hyperkalemia - can give insulin (and glucose!) to tx
Pericardial tamponade can cause dyspnea and classically presents with this triad
1) hypotension; 2) muffled heart sounds; 3) JVD
Alveolar oxygen is calculated with this formula: PAO2 =
simplified version for room air at seal level
PAO2 = 150 - (PaCO2/0.8)
once you calculate PAO2, you can calculate the A-a gradient by PAO2 - PaO2 (from ABG results)
Pts with acute hyperkalemia may develop __ or __ changes.
ascending muscle weakness with flaccid paralysis; EKG changes
What EKG changes do you expect with hyperkalemia (4)?
peaked T waves, followed by short QT interval, QRS widening, and sine wave with ventricular fibrillation
In young pts (and often old), a sub auricular systolic bruit is highly suggestive of __.
Fibromuscular dysplasia
Encephalopathy, ocular dysfunction, and gait ataxia are the classic triad for ___.
Wernicke encephalopathy
CT WITH contrast is useful in identifying structural abnormality or mass lesions (primary or metastatic cancer, abscess, infarct) but is not helpful for identifying ___
intracranial hemorrhage
do CT w/OUT contrast in emergency setting to look for bleed and MRI in non-emergent settings
Septic shock is a form of distributive shock characterized by these 3 things.
1) decreased SVR due to peripheral vasodilation; 2) decreased (or low normal) PCWP due to capillary leakage, which causes decreased preload; 3) elevated mixed venous oxygen (MvO2) saturation due to hyperdynamic circulation (as CO is inc in response to reduced SVR to maintain peripheral tissue perfusion) with an inability of tissues to adequately extract oxygen (may develop lactic acidosis from hypoperfusion)
The most feared side effect of PTU and methimazole is __.
agranulocytosis
Undiagnosed pleural effusion is best evaluated by __, except in pts with clear cut evidence of __
thoracentesis; CHF (use diuretics)
MEN 1 disease (3 things and how they present)
primary hyperparathyroidism (hypercalcemia); pituitary tumors (prolactin, visual defects); pancreatic tumors (especially gastrinomas)
MEN2A and 2B
Both: medullary thyroid cancer (calcitonin) and pheochromocytoma
A: parathyroid hyperplasia
B: mucosal neuromas/marfanoid habitus
Name the nephrotic syndrome based on clinical association - African American and Hispanic ethnicity
Focal segmental glomerulosclerosis
Name the nephrotic syndrome based on clinical association - HIV and heroin use
Focal segmental glomerulosclerosis
Name the nephrotic syndrome based on clinical association - hep B and C
membranoproliferative glomerulonephritis (hep B can also be membranous nephropathy)
Name the nephrotic syndrome based on clinical association - adenocarcinoma (breast, lung), SLE, NSAIDs
membranous nephropathy (also hep B)
The most common site of colon cancer metastasis is ___
liver
Hepatorenal syndrome is likely due to increased __ generation in the __ secondary to portal hypertension, which is thought to cause systemic __, leading to renal hypo perfusion.
nitric oxide; splanchnic; vasodilation
How does nephrotic syndrome lead to hyper coagulation?
increased urinary loss of antithrombin 3 (also altered levels of protein C and S, increased plt aggregation, hyperfribrinogenemia due to increased hepatic synthesis, and impaired fibrinolysis)
Clinical presentation of __ includes classic triad of fever, leukocytosis, and LUQ abdominal pain. Left sided pleuritic chest pain with left pleural effusion is also commonly seen
splenic abscess
___ is the drug of choice in primary biliary cholangitis. In this disease, pts have positive __ antibodies.
ursodeoxycholic acid (UDCA); anti-mitochondrial
___ reactions are the most common adverse reaction to blood transfusions. They present with __ and __ within 1-6 hours of transfusion.
Febrile non-hemolytic transfusion; fever and chills
Patient rapidly develops fever, flank pain, hemolysis, oliguric renal failure, and DIC within an hour of a transfusion, dx?
acute hemolytic transfusion rxn due to mismatched blood (ABO mismatch)
A delayed hemolytic response to transfusion typically present 2-10 days after transfusion with mild fever and hemolytic anemia and is caused by ___.
anamnestic antibody response (against a minor red blood cell antigen)
Anaphylaxis following a blood transfusion is seen in pts with ___. Will see rapid onset of shock, angioedema/urticaria, and respiratory distress within a few minutes of transfusion
anti-IgA antibodies
Transfusion related acute lung injury is caused by donor ___. Pt experiences respiratory distress and signs of noncardiogenic pulmonary edema within 6 hrs of transfusion.
anti-leukocyte antibodies
Severe side effect of hydroxychloroquine? Methotrexate (3)?
retinopathy; hepatotox, stomatitis, cytopenias
IV glucagon increases the intracellular levels of cAMP and has been effective in treating __ and __ toxicity
beta blocker and/or calcium channel blocker
In pts with symptomatic bradyarrhythmias, try and identify and tx reversible causes, next step is administration of __. In pts with inadequate reopens further tx options include these 3.
IV atropine; 1) IV epinephrine; 2) IV dopamine; 3) transcutaneous pacing
Malignant otitis externa (MOE) is a serious infxn of the ear seen in elderly pts with poorly controlled diabetes and most commonly caused by ___. Presentation consists of ear pain and ear __, and __ may be seen within the ear canal on exam. Progression can lead to __ of the skull base and destruction of the __.
pseudomonas; drainage; granulation tissue; osteomyelitis; facial nerve (facial palsy)