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哮喘持续状态(Status Asthmaticus)是麦示哮喘严重发作的常用术语,其定义为哮喘严重发作、并对通常治疗(如肾上腺素或茶碱)无反应.此外,这类病人哮喘多持续12～24小时,或在几天内反复发作;用力肺活量(FVC)<1.0升,FEV_1<50%,最大呼气峰速(PEFR)<60～100升/分;有 PaO_2下降及 PaCO_2上升.哮喘持续状态是一种威胁生命的危重情况,一经确立诊断,应即刻住院并积极进行治疗.一、氧疗缺氧将损害心肌功能、引起肺动脉高压及缺氧性脑病.严重缺氧常常是支气管哮喘病人急性和非预料死亡的原因.哮喘持续状态都应给氧治疗.输氧时应作湿化.多数病例给予30～50%浓度的氧即可纠正低氧血症.但也有少数病例,给予充分的氧疗后,PaO_2仍低于6.67～8.00KPa
Status Asthmaticus is a commonly used term for Mehndi’s severe episode of asthma and is defined as a severe episode of asthma and does not respond to usual therapies such as epinephrine or theophylline.In addition, Hour, or repeated episodes within a few days; FVC <1.0L, FEV_1 <50%, peak expiratory flow (PEFR) <60-100 l / min; decreased PaO 2 and increased PaCO 2. Is a dangerous life-threatening situation, once diagnosed, should be immediately hospitalized and actively treated .Oxygen hypoxia will damage myocardial function, causing pulmonary hypertension and hypoxic encephalopathy.A serious hypoxia is often acute in patients with bronchial asthma And unexplained causes of death.All asthma should be given oxygen therapy.Oxygen should be humidified.Most cases with 30 ~ 50% concentration of oxygen to correct hypoxemia.However, there are a few cases, given adequate oxygen After treatment, PaO_2 is still lower than 6.67 ~ 8.00KPa