0529 Flashcards
(49 cards)
imperforate anus is most commonly assoc with?
GU tract malformations- renal agenesis, hypospadias, epispadias, bladder extrophy
striate of occipital lobe
= primary visual cortex.
cuneus gyrus: lower visual field.
lingual gyrus: upper visual field.
physio changes in dilated cardiomyopathy
ventricular dilatation.
contractile (systolic) dysfunction.
S&S of CHF.
when does diastolic dysfunction occur?
when there is impaired LV filling due to reduced LV compliance.
ex: hypertensive heart disease.
restrictive CM.
hypertrophic CM.
most common heart sx in SLE
pericarditis-
chest pain radiating to neck and shoulders, relieved by sitting up.
result of high altitude for several days
hypoxemia with chronic resp alkalosis
long term sequelae of hydrocephalus in early infancy
lower extremity spasticity, muscle hypertonicity and hyperreflexia due to stretching of periventricular pyramidal tracts.
also:
visual disturbances.
learning disabilities.
chronic lymphedema
may be due to axillary LN dissection.
predisposes to cutaneous angiosarcoma (Stewart-Treves syndrome).
NNRTI (non-nucleoside reverse transciptase inhibitors)
nevirapine, efavirenz, delavirdine.
do not require activation by intracellular phosphorylation.
pseudomonas features
Gm neg rod. motile. aerobic. non lactose-fermenting. oxidase positive. pyocyanin pigment. grape/fruity odor. endotoxin (fever, shock). exotoxin A (inactivate EF-2).
arteriovenous conc gradient in anesthetics
reflects solubility of anesthetic in tissues.
HIGHER gradient = more soluble = high tissue uptake = slower onset of action.
most potent class of diuretics
LOOP-
used for edema in various settings (pulmo, CHF, peripheral)
third part of duodenum is closely assoc with?
uncinate process of pancreas and SMA
SMA syndrome
transverse portion of duo is entrapped btn SMA and aorta, causing sx of partial intestinal obstruction
what happens when antidepressants are used in the depressed phase of bipolar d/o?
rapid switch to mania
*need to use with antipsychotic or mood stabilizer
where does parvovirus B19 replicate?
bone marrow (tropic for erythroid precursor cells, esp pronormoblasts and normoblasts)
nitrogen atoms of urea molecule are derived from?
NH3 and aspartate
rate-limiting enzyme of urea cycle?
carbamoyl phosphate synthetase I.
activated by N-acetylglutamate (NAG).
how is Listeria eliminated from body?
cell-mediated immunity (neonates and immunocompromised are vulnerable)
hemolysis by Listeria
very narrow zone of beta-hemolysis on sheep blood agar (similar to beta-hemolytic strep)
stasis dermatitis
due to chronic venous insuff (in varicose veins).
erythema and scaling with progressive dermal fibrosis and hyper pigmentation.
lipoprotein lipase deficiency
results in increased conc of serum chylomicrons which contain triglycerides.
high serum TG (above 1000 mg/dL) = risk of acute pancreatitis.
how do cholinergic agonists affect endo cells?
bind muscarinic receptors.
promote release of NO (EDRF), which activates guanylate cyclase and diminishes endo calcium conc to cause VASODILATION.
thalamic syndrome
total sensory loss on contra side of body.
NO MOTOR DEFICITS but proprioception problems may lead to trouble walking and falling.
