Called when the occurrence of acute bronchospasm asthma so severe that patients have trouble breathing at rest conditions and levels of certain stress on the heart of acute asthma is characterized among other premises rapid breathing (> 30 times / minute), and increased pulse. Patients with acute severe asthma, aka rising pulse> 110 beats / min. Patients with PER (peak expiratory flow rate < 100 L / min will have difficulty talking principle of treatment of acute asthma is to reduce inflammation, increase the bronchodilating and avoiding asthma triggers facto. The goal of treatment is to restore respiratory function (normal), and prevent acute asthma attacks severe.