6/22/13 Flashcards
What is the effect of lupus anticoagulant, seen in APLA, on coagulation studies?
(paradoxically) prolonged PTT
A short (~30 min) TIA with vertigo is classic for localization to which artery?
vertebrobasilar
In Brown-Sequard syndrome, on which side is motor function lost?
ipsilateral
In Brown-Sequard syndrome, on which side is position and vibratory sense lost?
ipsilateral
In Brown-Sequard syndrome, on which side is pain and temp lost?
contralateral
All types of innervation are lost in anterior spinal artery infarct except _______.
position and vibratory sense
What kind of incontinence is oxybutynin used to treat?
urge
_______ will often present with fever, retro-orbital headache, and a swollen protruding eye. Palsies of CN III, IV, and VI may also be seen.
Cavernous sinus thrombosis
Diabetic microvascular infarcts affect the _______ portion of CN III, and therefore do not usu. affect the sympathetic fibers that control the pupillary reflex.
inner
Why would aneurysms, unlike most conditions causing infarction of CN III, cause a dilated pupil?
sympathetic fibers run on the outside of the nerve
What syndrome is characterized by precocious puberty, multiple cystic bone lesions, and cafe au lait spots?
Polyostotic Fibrous Dysplasia
McCune-Albright syndrome
What is the mechanism of precocious puberty in polyostotic fibrous dysplasia?
autonomic aromatase production by ovaries
What is incomplete isosexual precocious puberty?
onset of only 1 secondary sexual characteristic (i.e. thelarche, adrenarche, or menarche in a girl)
What is complete isosexual precocious puberty?
onset of all secondary sexual characteristics
Before what age is puberty considered precocious in girls? Boys?
8 yo; 9 yo
Which type of heparin is preferred for hemodynamically stable pts w/ pulm embol?
subcutaneous LMWH
What kind of heparin should be used for henodynamically unstable pts w/ pulm embol? What shoud also be administered?
IV unfractionated heparin; thrombolytics
Mothers w/ severe mitral stenosis should undergo what kind of invasive monitoring during labor & delivery?
Swan-Ganz catheter
During labor & delivery of mothers w/ mitral stenosis, what is recommended for prevention of excess maternal Valsalva and tachycardia?
shorten 2nd stage of labor w/ vacuum or forceps
What is the most effective therapy for symptomatic mitral stenosis in pregnancy, esp. if failed medical therapy?
balloon valvuloplasty
