USMLE Step 3 pt. 2 Latest Update - 270

USMLE Step 3 pt. 2 Latest Update - 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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