USMLE Step 3 pt. 2 Latest Update 2024-2025 270 Questions and 100% Verified Correct Answers Actual Exam Guaranteed A+
- week old kid presents with apnea, cyanotic episodes, rhinorrhea and nasal congestion
in the winter. what do they have and how is it treated - CORRECT ANSWER: RSV
suportive care
*give palivizumad for infants with preterm birth < 29 weeks, chronic lung disease of prematurity, congenital heart disease that is hemodynamically significant
all patients with suspected scleroderma should be screened for what at diagnosis -
CORRECT ANSWER: PFT - pulmonary htn and interstitial lung disease
define cataplexy - CORRECT ANSWER: sudden onset of muscle weakness, often
triggered by intense emotional episodes (anger, laughing, surprise), common symptom of narcolepsy - pathognomonic for narcolepsy
define cluster headaches - CORRECT ANSWER: -men
-episodic -orbital, supraorbital, temporal -lacrimation -injection -rhinorrhea -nasal congestion
define Rh alloimmuization - CORRECT ANSWER: occurs after Rh negative mom is
exposed to Rh positive fetal blood
define subclinical thyrotoxicosis - CORRECT ANSWER: low TSH 1 / 4
normal thyroid hormone concentrations -tx with anti-thyroid meds or radioactive iodine if TSH is <0.1 or who are increase risk due to age >65
define tachyphylaxis - CORRECT ANSWER: acute, decrease in drug effectiveness after its administration
define the Well Criteria - CORRECT ANSWER: 3+
-clinical signs of DVT -alt diagnosis less likely than PE
+1.5 -previous PE or DVT -HR >100 -recent surgery or immobilization
+1 -hemoptysis -cancer
score > 4 = PE likely
Describe Bell's palsy - CORRECT ANSWER: -maybe a hx of URI
-facial asymmetry -its a lower motor nuclear involvement of the facial nerve
describe bronchiectasis - CORRECT ANSWER: copious amounts of sputum
recurrent infections
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describe chlamydial conjunctivitis - CORRECT ANSWER: direct contact
5-14 days after delivery thicken, injected conjunctivae (chemosis) eyelid swelling
describe Dengue - CORRECT ANSWER: due to increased capillary permeability
leading to hemoconcentration
marked thrombocytopenia prolonged fever respiratory/circulatory failure
describe Hyperosmolar hyperglycemic state (HHS) - CORRECT ANSWER: -likely in DM
T2 -negative serum ketones (which confirms its not DKA) -bicarb is almost normal -dehydrated because osmotic diuresis caused by hyperglycemia -maybe showing mild acute renal failure -increased serum osmolality = neurologic symptoms -hyperkalemic due to relative insulin insufficiency and hyperosmolality - in spite of an overall body potassium deficit caused by increase urinnary excretion
describe left atrial myxomas - CORRECT ANSWER: most common cardiac tumor
present with sx of MV obstruction - diastolic murmur, and tumor plop, heart failure , a fib
they frequently symbolize --> acute material occlusion in otherwise healthy people
Describe Meniere's disease - CORRECT ANSWER: triad - periodic vertigo, unilateral hearing loss, tinnitus
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*HEARING LOSS is the major thing here
describe myasthenia gravis - CORRECT ANSWER: -autoantibodies that attack the ACh receptors in the NMJ -ocular and bulbar muscle are most commonly involved -classic presentation consists of progressive muscular weakness throughout the day that improves with rest
describe prune belly syndrome - CORRECT ANSWER: renal, urethral, ureteral
abnormalities in the neonate
abdominal musculature is underdeveloped - leads to constipation and weak cough
describe sx of mono - CORRECT ANSWER: -fever
-tonsillitis/pharyngitis -fatigue -posterior or diffuse cervical lymphadenopathy -hepatospenomegaly -rash after amoxicillin
describe tension headaches - CORRECT ANSWER: -bilateral
-band like -non throbbing
describe Turners syndrome and hormone replacement and pregnancy - CORRECT
ANSWER: HRT - intimated to prevent osteoporosis and aid with vaginal dryness
they need donor oocytes to get preggo
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