Step 3 Flashcards
TTP Path: Sxs: Labs: Tx:
Path: Deficiency in ADAM TS13 (normally cleaves vWF into smaller pieces for degradation) due to an acquired autoantibody–> microthrombi
SXs: FAT RN Fever Anemia Thrombocytopenia Renal Failure Neuro symptoms
Labs:
- Increased bleeding time, but normal PT/PTT
- Anemia with Schistocytes
Tx:
-Exchange transfusion (NEVER TRANSFUSE PLTS)
DIC Path: Sxs: Labs: Tx:
Path: There are so sick the start to form clots where they shouldn’t, the use up the clotting materials and start to bleed
Sxs:
Septic
Labs:
- Anemia with Schistocytes
- Increased PT and PTT
- Fibrinogen is decreased
- D-dimer is increased
Tx:
Supportive
Fix Sepsis
HIT Path: Sxs: Dx: Tx:
Path: antibodies to plts
Sxs: Plts drop after 7 to 14 days on heparin, normal PT/PTT
Dx: HIT antibodies
Tx: Stop heparin, put agatroban and bridge to warfarin
ITP path: Sxs: Dx: Tx:
path: antibodies to plts
Pt: women with autoimmune disorder with low plt
Dx:*diagnosis of exclusion
Tx:
low plts–>steroids
critically low plts–> IgG to hide the Plts
Hemolytic anemia lab findings
Increased LDH
Decreased haptoglobin
Schistocytes on smear
Positive likelihood ratio
what?
Calculation?
what is it: the chance of finding an event in someone with the disease vs that someone without a disease
calculation:
+LR= (sens)/(1-spec)
negative likelihood ratio
what?
Calculation?
what is it: the chance of testing negative in someone with the disease vs that someone without a disease
calculation:
-LR= (1-sens)/(spec)
***The smaller the likelihood ratio the less likely the pt is to have to disease if they have a negative test
Esophageal cancer types and risk factors
Adenocarcinoma-chronic reflux and barrett’s esophagus
—distal to mid esophagus
Squamous cell carcinoma-smoking and alcohol
—upper esophagus
bacterial conjunctivitis Tx
Doesn’t wear contacts—>Erythromycin ointment or azithromycin drops
Wears contacts–> Fluoroquinolone drops (to cover for possibility of pseudomonas)
tx opioid withdrawal
-Methadone
OR
-In hospital may need to use clonidine (alpha 2 adrengeric agonist) due to availability
Scromboid poisoning
Sxs:
Sxs: Oral burning, flushing, headache, palpitations and diarrhea
-Start 10 to 30 minutes after eating fish, Sxs are self-limited
Path: IF fish is stored to hot, some of its products are broken down to histamine.
Thiazide effect on calcium
retains more calcium in the serum
Cerebral venous sinus thrombosis tx
Heparin or Low molecular weight heparin (if pregnant)
% of people within 1 SD
68%
% of people within 2 SDs
95%
% of people within 3 SDs
99.7%
At what bHCG does a pregnancy become visible on ultrasound
> 1,500
ARR
Control rate-treatment rate
NNT
1/ARR
Tick paralysis
vs
Guillane Barre
Tick paralysis- progresses over hours (start of sxs in 4 to 7 days after bite)
vs
Guillane Barre- hx of GI or URI sxs, the paralysis progressed over several days to weeks
Thyroid lymphoma
Pt:
Pt: suspect in a patient with a history of hashimoto’s thyroiditis with a rapidly enlarging thyroid gland and subsequent obstructive symptoms
Medullary thyroid cancer lab
Elevated calcitonin
Sxs of mixed cyroglobulinemia
Palpable purpura
Weakness
Arthralgia
-20% get glomerulonephritis
Labs:
hypocomplementemia
Rheumatoid factor
Path: secondary to an underlying inflammatory condition (MC is Hep C)
which is an intrinsic characteristic of the test?
Sens and spec
Or
Positive and Negative predictive values
Sens and spec
Likelihood ratios are also not affected by prevelance