A 9-month-old unvaccinated infant presents with fever, rhino…

A 9-month-old unvaccinated infant presents with fever, rhinorrhea, and cough for 2 days. The child now has tachypnea, nasal flaring, and retractions with shallow, rapid respirations. On auscultation, diffuse wheezes with a prolonged expiratory phase are heard, along with crackles and rhonchi. The infant appears lethargic and has circumoral cyanosis. A chest radiograph shows hyperinflation with mild interstitial infiltrates. Which of the following is the most likely diagnosis?

Tu, a 55 year old with a 35 pack year history of smoking, pr…

Tu, a 55 year old with a 35 pack year history of smoking, presents to the clinic with chronic dyspnea and a cough that has been worsening over the past 5 months. Your top differential diagnoses are COPD, Heart Failure and Lung Cancer. Which of the following history and exam findings would lead you to think that Heart Failure should be ruled in as your most likely diagnosis?