They studied the effects of either medical treatment or surgery for chronic sinusitis on the severity of asthma symptoms in 43 patients suffering from both conditions.
Twenty patients were assigned to medical treatment. They were given a 12-week course of erythromycin, alkaline nasal douche and intranasal corticosteroid preparations. The remaining 23 patients underwent endoscopic sinus surgery to remove nasal blockages and polyps.
Both treatment approaches were found significantly to improve asthma control and reduce asthma symptoms, as well as reducing symptoms of sinusitis.
After 12 months, the FEV1 of patients treated with surgery was found to have increased by 3.9 per cent of the predicted value, while that of patients given medical treatment went up by an average of 5.8 per cent.
The researchers concluded that treatment of chronic sinusitis produces improvements in concomitant asthma.