A 30-year-old patient presents a history of recurring pulmonary infections, a chronic cough, fatigue and an abnormal hidrotic chloride concentration. Which of the following respiratory disorders is the patient presenting?

• A. Chronic Bronchitis 
• B. Cystic Fibrosis 
• C. Muscular Dystrophy  
• D. Sweat Chloride Test 

Answer: (B)

Verified step by step guidance

1. Step 1: Identify the key clinical features presented by the patient: recurring pulmonary infections, chronic cough, fatigue, and an abnormal sweat chloride concentration.
2. Step 2: Understand that an abnormal sweat chloride concentration is a hallmark diagnostic indicator for Cystic Fibrosis, a genetic disorder affecting the respiratory and digestive systems.
3. Step 3: Recognize that Chronic Bronchitis primarily involves inflammation of the bronchial tubes and does not typically present with abnormal sweat chloride levels.
4. Step 4: Note that Muscular Dystrophy is a group of genetic disorders characterized by muscle weakness and degeneration, not primarily respiratory symptoms or abnormal sweat chloride.
5. Step 5: Conclude that the combination of symptoms and the abnormal sweat chloride test points toward Cystic Fibrosis as the respiratory disorder the patient is presenting.