The average duration of complete withdrawal for mild exacerbation was 1 ± 0.9 hours, moderate exacerbation was 5.3 ± 0.3 hours, severe exacerbation was 13.9 ± 2.5 hours.
Thời gian trung bình cắt cơn hoàn toàn đối với cơn hen nhẹ là 1 ± 0,9 giờ, cơn hen trung bình 5,3 ± 0,3 giờ, cơn hen nặng 13,9 ± 2,5 giờ.