ALL THE COMSAE .QUESTIONS AND
SOLUTIONS
loratidine vs ranitidine - Answer loratidine: 2nd gen H1 blocker, doesnt cross BBB -->
less sedating
ranitidine: H2 receptor antagonist (like cimetidine)
cells w RBCs inside - Answer entaemoba histolytica
which type of pneumothorax causes trach...
antibodies in hashimotos attacks - Answer thyroid peroxidase or antithyroglobulin
enlarged non tender thyroid
2 factors that influence starling curve - Answer x axis- preload (EDV)
y axis- stroke volume or CO
treatment for fibromyalgia - Answer TCA, SNRIs anticonvulsants
what blocks NE reuptake? - Answer TCA or SNRIs
,possible complication of pagets bone disease - Answer osteocarcoma
what does Hct tell you? - Answer ratio of volume of RBCs compared to total blood
volume
probenecid - Answer inhibits reabsoprtion of uric acid in PCT
- also inhibits secretion of PCN
- can ppt uric acid calculi
2 causes of SCID - Answer ADA deficiency
(adenosine deaminase required for degradation of adenosim and deoxyadenosine
- in ADA deficiency, high levels of dATP --> toxicity in lymphocytes --> SCID
hypoplastic thymus
lithiums effects on urination - Answer inhibits vasopression/ADH --> increased urinary
frequency
infertility drug that can result in multiple fetuses - Answer clomiphene (clones- multiple
babies)
antagonist at estrogen R in hypothalamus (thus inhibits normal negative feedback)
upregulates LH and FSH release from pituitary --> ovulation
used to treat PCOS but can cause ovarian enlargement, multiple fetuses
AFP levels in down syndrome - Answer low
GI malformation A/W down syndrome - Answer Hirschprungs- congenital aganglionic
megacolon
defective relaxation and peristalsis of rectum and distal sigmoid colon
failure to pass meconium, empty rectal vault, megacolon
test for trichomonas - Answer nucleic acid amplification
painless enlarging tumor in left testis 75 yo - Answer diffuse large B cell lymphoma
most common in 70-80s
choriocarcinoma affecst what age group - Answer 15-35
yolk sac tumor affects what population - Answer infants and children 1-2 years
Sensourineural hearing loss, tinnitus, paralysis of facial muslces, loss of corneal reflex -
Answer Cerebellopontine angle tumor - between cerebellum and lateral pons -- CNs 5,
7, 9
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