MRCP2-2757
A 67-year-old man presents to the respiratory clinic with a three-month history of a productive cough and steady weight loss of 10 kg. He has noticed streaks of blood in his sputum over the past week and complains of night sweats. He has a history of bronchial asthma and has required hospital admission on several occasions. His current therapy includes salbutamol and beclomethasone inhalers and prednisolone 5 mg once daily. His chest x-ray shows right apical consolidation and a sputum sample is positive for acid-alcohol fast bacilli, leading to a presumptive diagnosis of pulmonary tuberculosis. He is started on antituberculous therapy but presents to the Emergency department five days later with breathlessness and wheeze. On examination, he has widespread expiratory wheezes and a PEFR of 110 L/min. His chest x-ray does not show any significant change. What is the most appropriate step in his management?