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A 6 year old female is rushed to the emergency department. The child is cyanotic, is breathing with gasping respirations, and has a heart rate of 40 beats per minute. Which of the following is the most appropriate intervention that should be performed first in this child?

The parent of an overweight, adolescent female has reported decline in her usual excellent school performance. Laboratory screening indicates a thyroid stimulating hormone (TSH) level of 7.4 mU/mL. The most likely diagnosis is:

Signs of tension pneumothorax include: Select all that apply.

A 13 y/o male reluctantly shares with you that his “chest hurts.” On physical examination you note unilateral breast enlargement which is tender to palpation. You suspect physiological gynecomastia. Which Tanner stage would support that diagnosis?

A connection between the pulmonary artery and the aorta which causes a murmur in premature infants is typically noted as 

A 4 y/o with a history of hypoxic-ischemic event at birth is admitted for status epilepticus. She is noted to be postictal, but on exam her pupils are unequal and minimally responsive. Appropriate initial management includes

A 15-month-old girl has a history of poor oral fluid intake, occasional vomiting, rapid breathing, and decreased urine output. Physical examination reveals a pulse rate of 150 beats per minute, blood pressure of 120/80 mmHg, and a respiratory rate of 60/minute. There are bibasilar rales, and the liver is palpable 4 cm below the right costal margin. Which of the following is the most appropriate next step in caring for this child?  

An adolescent with slurred speech and altered mental status arrives to the ED.  An AVM is suspected. What study would be best to diagnose this defect?

A lethargic, dehydrated 1-week-old infant presents with the following laboratory values: Na 123 mEq/L K 6.4 mEq/L BUN 42 mg/dl Cr 0.8 mg/dl glucose 50 mg/dl HCO3 15 mEq/L The most likely differential diagnoses include:

A 16 y/o is brought emergently to the ED after a whole day of football practice. He apparently was not feeling well due to a viral gastroenteritis illness the last 2 days, but went to practice anyway. In addition to oliguria, which set of signs and symptoms are most consistent with 10% dehydration?