A 15-year-old male presents to the clinic with fatigue, sore throat, and swollen lymph nodes for the past 10 days. On examination, he has pharyngeal erythema, posterior cervical lymphadenopathy, and mild splenomegaly. A Monospot test confirms a diagnosis of infectious mononucleosis (IM) caused by Epstein-Barr virus (EBV). The provider advises the patient to avoid contact sports for several weeks. What is the primary reason for this restriction?

A 67-year-old woman presents to the clinic with fatigue, nausea, and mild confusion over the past two weeks. She also reports increased thirst and frequent urination. She has a history of smoking and unexplained weight loss over the past few months. On examination, she appears dehydrated, with mild muscle weakness but no focal neurological deficits. Laboratory results show: Serum calcium: 12.8 mg/dL (normal: 8.5–10.5 mg/dL). What is the most likely explanation for this patient’s elevated serum calcium?

A 4-year-old child is brought to the emergency department with rapid-onset fever, difficulty breathing, and a muffled voice. The parents report that the child refuses to lie down and is drooling excessively. On examination, the child appears anxious, sitting in a tripod position, and has inspiratory stridor. Acute epiglottitis is suspected. Which of the following are common signs and symptoms of acute epiglottitis in children? (Select all that apply)

A 6-year-old boy is brought to the pediatric clinic by his mother due to recurrent episodes of coughing, wheezing, and shortness of breath, especially at night and after playing outside. The provider explains to the mother that her child likely has asthma. Which of the following best describes childhood asthma?

A 58-year-old man presents to the emergency department after spending several hours gardening and mowing the lawn in hot weather. He reports experiencing muscle cramps, dizziness, and excessive sweating before arrival. He has no significant past medical history and is generally in good health. On examination, his skin is warm and flushed, his heart rate is elevated, and he appears mildly confused. Laboratory tests reveal: serum osmolality: Elevated and serum sodium: Borderline high. What is the likely explanation for this finding?

In which of the following cases should an antibiotic be prescribed for Acute Rhinosinusitis?

A 2-year-old child presents to the clinic with chronic cough, recurrent respiratory infections, and failure to thrive despite an adequate diet. A sweat chloride test is performed and confirms a diagnosis of cystic fibrosis (CF). Which of the following statements is accurate regarding the pathophysiology of Cystic Fibrosis?

Identify the indicated structures: A[A] (that specific part)

Anemia develops when the body does not have enough healthy red blood cells to carry oxygen to body tissues.

An X-ray containing 6,336 photons strikes through 6 HVL’s of a material. How many photons are left?