Hi Thanks for your query. I think your wife are using short acting bronchodialator like salbutamol or levosalbutamol too frequently that is causing increased heart rate. That indirectly indicates that her asthma symptoms are not controlled. For which you need to revisit your pulmonologist for proper assessment of asthma symptoms, going for spirometric measurement of severity of airflow limitation and subsequently proper adjustment of doses of long acting bronchodialators and inhaled corticosteroids so that frequency of using salbutamol or levosalbutamol is decreased. Therefore you must consult a pulmonologist soon. Thank you. Regards, Dr Arnab Maji