A 48 year old man with a body mass index of 47 kg per m2 presents with morning headaches, daytime somnolence, and progressive dyspnea. Arterial blood gas shows chronic hypercapnia. Pulmonary function testing demonstrates reduced total lung capacity without airflow obstruction, and chest imaging shows no interstitial infiltrates. Which of the following is the most likely diagnosis?
- A)Acute respiratory distress syndrome
- B)Pulmonary embolism
- C)Idiopathic pulmonary fibrosis
- D)Obesity hypoventilation syndromeGABARITO
- E)Hypersensitivity pneumonitis
Explicação
Obesity hypoventilation syndrome is correct. This patient has an extraparenchymal restrictive pattern with severe obesity, chronic hypercapnia, and sleep disordered breathing but no interstitial infiltrates on imaging. Restriction here results from impaired ch... Ver explicação completa e trilha adaptativa →