The persistence of asthma occurs, is very dangerous, and therefore treatment should be actively rescue, basic principles are:
1, supply of adequate oxygen, generally available nasal catheter suction, and pay attention to humidification;
2, the lifting of persistent bronchospasm, available atomization of the β2-adrenergic stimulants such as salbutamol inhalation, every four hours.
3, intravenous to aminophylline.
4, intravenous injection of corticosteroids.
5, full intravenous fluids, mucus-thinning.
6, to correct acidosis: Due to lack of oxygen into the liquid can be less complicated by metabolic acidosis, can be used 5% sodium bicarbonate intravenously.
7, severe respiratory failure were available for endotracheal intubation and mechanical ventilation to breathe life-saving.
In the prevention of attacks, it can take the following measures:
2, cromolyn sodium: a stable mast cell membrane, preventing their degranulation and release of media; lower respiratory tract peripheral receptors of excitatory role of good effect of exogenous asthma, reduce the number of incidence.
3, ketotifen: also inhibit mast cell, basophil, reducing the release of histamine and slow-reactive substances to reduce airway hyperresponsiveness role. This drug for prevention of asthma attacks also have good results.
4, at present, most experts recommend frequent recurrence of asthma patients in the long-term inhaled corticosteroids in the prevention of attacks are even better the effect, use the method can be aerosol or dry powder inhalation, a daily dose of 400 ~ 800mg, side effects are not Great.