This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
The most predictive and dangerous side effect of propranolol that makes it to be avoided in known patient of COPD is induction of : 
Select and explain. 
A. Respiratory failure, B. Acute asthmatic attack, C. Glaucoma, D. Pleural effusion
B: Acute asthmatic attack
Answer: B: Acute asthmatic attack 
Explanation: Answer is B (Acute Asthmatic Attack) " Propanalol worsens chronic obstructive lung disease. It can precipitate life threatening attack of Bronchial Asthma as it increases Bronchial resistance by Blocking 2 receptors" - KDT Drugs most commonly associated with the induction of acute episodes of Asthma Aspirin g Beta adrenergic blockers Q Colouring agents such as tarazine Sultiting agents.