The aim of this study is the evaluation of effects of Tacrolimus on improving clinical symptoms, FEV1 and PEFR in patients with acute asthma attack.
This double blind randomized clinical trial will be carried out on 70 patients with severe asthma, who are referred to emergency department due to an asthma attack. The intervention group will be received 0.5 mg ipratropium nubulized (repeated up to 3 doses in every 20 minutes), 5 mg Albuterol inhalation and Prednisolon at the beginning (zero time point). Also, 2 mg nebulized Tacrolimus (2 mg Tacrolimus, diluted in 2 cc of normal saline). The control group will be received 0.5 mg nubulized ipratropium (repeated up to 3 doses in every 20 minutes), 5 mg Albuterol inhalation and Prednisolon at the beginning (zero time point), similar to experimental group, as well as taking 2 cc nubulized normal saline as placebo in the beginning. Pulmonary function (FEV1 and PEFR), hemodynamic variables (blood pressure, pulse and respiration rate, pressure of oxygen in arterial blood) will be compared at the time points of 0, 30, 60, 90 and 120 after the intervention for all the studied patients.