Medicine Qbank 2 Flashcards
risk factors for squamous cell caricoma
sun exposure! less important: arsenic, aromatic hydrocarbons, chronic osteomyelitis, chronic scars
methotrexate AE
macrocytic anemia. folate may help. DMARD inhibits dihydrofolate reductase leads to heme tox, including also pancytopenia. other AE: nausea, stomatitis, hepatotox, interstitial lung dx and alopecia and fever.
hydroxychloroquine AE
GI, visual disturbances, hemolysis in G6P def. (DMARD)
cyclosporine AE
immunosuppressant: viral infection, lymphoma, nephrotox
Azathioprine AE
pancreatitis, liver tox, dose-dependent bone marrow suppression
best method of improved survival in COPD
supplemental oxygen (vaccines also help)
indications for oxygen in COPD
PaO255, or evidence of for pulmonale
enlargement and failure of the right ventricle of the heart as a response to increased vascular resistance or high blood pressure in the lungs
cor pulmonale
most common cause of pneumonia in pt w/HIV
pneumococcus
infections causing pancreatitis
CMV, legionella, aspergillus (uncommon)
sulfonylureas AE
wt gain, hypoglycemia (generally added in metformin failure)
TZDs AE
wt gain, CHF, edema, bone fracture, bladder cancer (low risk of hypoglycemia, can be used in renal insufficiency)
Insulin AE
wt gain, hypoglycemia (added in metformin failure w/A1c>8.5)
DPP-IVi AE (sitigliptin)
not much. wt neutral, low risk of hypoglycemia, can be used in renal insufficiency
GLP-1 receptor agonist AE (exenatide, liraglutide)
associated w/acute pancreatitis. wt loss! low risk of hypoglycemia. possible second agent in metformin failure.
acute onset back pain, positive straight leg raise
herniated disk. early mobilization, muscle relaxants and NSAIDs
used in patients with osteoporosis and possible vertebral crush fractures
plain roentgenogram (x-ray)
IgA anti-endomysial and anti-tissue transglutaminase antibodies
predictive of celiac (absent in selective IgA deficiency)
worsening chest pain after endoscopy; left-sided pleural effusion
suspicious for esophageal rupture! water-soluble esophagram (may also see pneumothorax, pneumomedistinum)
HBsAg
persists for six months in chronic HBV
HBeAg
evidence of replication, increased infectivity (Immune tolerance and immune clearance phases, not later)
Anti-HBe
marks decline of replication
IgM anti-HBc
first antibody in acute infection
IgG anti-HBc
indicated prior or ongoing infection
confirm inactive HBV carrier status
3 normal ALT levels and 2-3 normal HBV DNA tests over one year
high in tumor lysis syndrome
potassium, phosphate and urea. allopurinol may reduce acute irate nephropathy
granulomatous dz, hyperkalemia, hypoglycemia, eosinophila
adrenal insufficiency; normal anion gap acidosis (TB causes Addisons’s!)
Calculate anion gap
Sodium - (Chloride+Bicarb). 12 is normal
tachycardia, hypertension, arrhythmias, high fever, tremor and lid lag
thyroid storm (can be postop, trauma, infection, iodine contrast or childbirth)
tachycardia, high fever, hypercarbia, muscle rigidity, elevated CK, hyperkalemia
malignant hyperthermia, tx dantrolene IV
euvolemic hyponatremia, decreased serum osmolarity, elevated urine osmolarity, high urine sodium
SIADH (fails to correct)
total body water overload, depleted intravascular volume, low urine sodium
low albumin, in advanced liver dz, particularly cirrhosis
ADH
acts on distal tubule to increase free water resorption. excess causes hyponatremia
associated with poor prognosis in PE
afib, low O2 sat
cardiac tamponade triad (and EKG)
distant heart sounds, hypotension and distanced neck veins; electrical alternans
vomiting and pain, not typically diarrhea, rapid onset (preformed toxin)
s.aureus
brief illness, watery diarrhea, cramps and fever, undercooked or unfridgerated food
c. perfringens
associated with shellfish, may cause invasive disease in immunocompromised or pts with liver dz
vibrio vulnificus
watery or bloody, undercooked beef, bovine feces
e. coli
bloody, associated with contaminated food, water outside of US
shigella
bloody, often in children and young adults, raw/undercooked meat
campylobacter
most common cause of bloody diarrhea w/o fever
e.coli
antibiotics in enterohemorrhagic e.coli
no! may increase risk of hemolytic uremic syndrome
high dose dexamethasone does not suppress plasma cortisol levels
ectopic ACTH syndrome
ACTH independent Cushing’s
exogenous glucocorticoids, adrenal adenoma, or primary pigmented nodular adrenocortical hyperplasia
ACTH dependent Cushing’s
ACTH-producing pituitary adenoma (cushing’s dz), ectopic ATCH, ectopic corticotropin-releasing hormone
rapid onset hypertension, metabolic alkalosis, hyperglycemia, hyperkalemia, and proximal muscle weakness
cushing’s syndrome from ectopic ATCH. malignancies (small-cell lung, pancreatic), does not suppress with high dose dexamethasone
loop diuretics (furosemide) AE
ototoxicity (reversible or irreversible hearing loss, tinnitus), esp. w/aminoglycosides or in pts with renal failure
hydrochlorothiazide AE
orthostatic hypotension, photosensitivity, hypercalcemia,
sildenafil (phosphodiesterase inhibitor) contrindications
pt on nitrates, with four-hour interval with alpha-blockers (doxasozin, for BPH) to avoid hypotension
odds ratio can be calculated, but incidence cannot
case-control study (two groups, one w/dz, comparison of exposure to risk factors)
s. bovis subtype associated with colon cancer
biotype 1, S gallolyticus
mammogram guidelines
women 50-75, every two years
pap smear guidelines
women 21-65, every three years
colonoscopy guidelines
50-75, every 10, or fetal occult blood every 1
lipid panel guideline
men over 35, every 5 years, women at increased risk at 45
hypertension screening
18+, BP every 2 years
DEXA guidelines
women +65, uncertain interval
antibiotics for human bite, “fight bite”
amoxicillin-clavulanate. polymicrobial coverage: gram positives, negatives and (beta-lactam producing) anaerobes.
clindamycin covers
gram-positives and anaerobes
ciprofloxacin cover
gram-positives and negative, not anaerobes
drug of choice for legionnaire’s dz, outpatient CAP
erythromycin
causes red-orange discoloration of body fluids
rifampin. antibiotic, mycobacteria coverage (TB, leprosy), tick-bourne illnesses in pts who can’t take doxycyline
inflammation, fibrosis and stricture of hepatic ducts in patients with UC (more often) and Crohn’s
primary sclerosing cholangitis. see beading on imaging, onion skins on histology
fever, malaise, wt loss, neuropathy, arthralgias, livedo reticularis , renal dz, necrotic inflammation of medium-sized arteries
PAN, polyarteritis nodosa
primary biliary cirrhosis v. primary sclerosing cholangitis
PBC is women, 9:1. PSC is associated with UC
travel to endemic area followed by dysentery and RUQ pain
amebic liver dz! single cyst in right lobe of liver, protozoa: entameoba histolytic. Mexico!
signs of liver abscess after surgery, GI illness, acute appendicitis
pyogenic liver cyst. severe presentation
most beneficial therapy to reduce progression to diabetic nephropathy
blood pressure control
DM statin recommendations
all diabetes 40-75
hypercalcemia in paralysis
immobilization leads to osteoclast activation and hypercalcemia. tx bisphosponates
altered mentation, lethargy, weakness, hyperosmolarity, volume depletion, severe hyperglycemia without ketosis
HHS. serum glucose >600! when insulin is just controlled enough to prevent ketosis but not hyperglycemia
diarrhea, tricuspid murmur?
Carcinoid! Small intestine, proximal colon, or lung, mets to liver!
elevated urine 5-hydroxyindoleacetic acid, increased chromogranin A
confirm carcinoid dx
primary treatment for all prolactinomas
dopaminergic agents: bromocriptine, caberogoline). normalizes prolactin and reduces tumor size
most cellulitis
s. aureus
tx staph cellutlitis
IV hafcillin, cefazolin, vanc if MRSA
abnormal thyroid levels in acute severe illness (T3 lower than T4)
sick euthyroid (decreased calories + increased cytokines: IL1, IL6)
Rh-, HLA B27
ankylosing spondylitis, reactive arthritis, enteropathic spondylitis (UC, IBD, Crohn’s), psoriatic arthritis, JIA
proteinuria, arthritis, wt loss, fatigue, rash, serotitis, neuro sx
SLE
painless subcutaneous nodules at pressure points (olecranon)
rheumatoid arthiritis, gout
associated w/PPi use, anti-histamines
c. diff
positive urea breath test
h. pylori (epigastric pain, early saiety)
c. diff test
assay for bacteria toxin A and B
steatorrhea, malabsorption, anti-tissue transaminase Ab
celiac
increased serum gastrin levels
gastroma, zollinger-ellison syndrome
GERD, diarrhea, and duodenal ulcers in young or med-age adults
zollinger-ellison syndrome
tx TCA OD
sodium bicarb (if QRS>100), benzos (if seizure)
tx anticholinergic OD (atropine, diphenhydramine)
physiostigmine
80% of US cirrhosis
HCV or EtOH cirrhosis
anasarca (generalized edema), ascites, thrombosis
nephrotic syndrome
paradoxical embolism
PFD, VSD allow embolus from venous circulation
lung lesion stable for >2 years
noncancerous (when no prior image available, get chest CT)
antinuclear antibodies
collagen vascular diseases, SLE, type 1 autoimmune hepatitis
anti-smooth muscle Ab, antiLKM
acute and chronic active hepatitis (highest in chronic active)
anti-smith
SLE (high specificity, but only present in 30-50%)
P-ANCA
churg-strauss, microscopic polyangitis
anti-mitochondrial Ab
90% of PBC
enthesitia
pain where tendons and ligaments connect to bones: heels, tibial tuberousities, iliac crests. In HLA-B27s: AS, psoriatic and reactive arthritis)
endotrachial tube misplacement v. tension pneumothorax
tension pneumo has significant hypotension
normal response to calcium infusion test
decreased urine phosphate excretion, 2/2 PTH inhbition (does not occur in hyperPTH)
calcium infusion test: sharp rise in gastrin
gastrinoma (pancreatic islet cell tumor) (also diarrhea, ulcers in multiple sites, thickened gastric folds on endoscopy)