<prompt> A 55-year-old female who is taking propanolol for the management of a cardiovascular disease experiences an acute asthmatic attack. Which of the following drugs would you prescribe to attenuate this asthmatic attack?Cromolyn sodiumSalbutamolBeclomethasoneIpratropium bromide  <response>: Ref: KDT 6e p222 Inhaled b2 agonists are the agens of choice for termination of acute attack of bronchial asthma. However, as the patient is receiving b-blockers, treatment with b2 agonists will be ineffective receptors are already blocked. Therefore, other bronchodilators like anticholinergic agents ipratropium or methylxanthines theophylline will be useful in such a case. 