[Hospital admission for asthma. Descriptive analysis and prognostic factors after discharge]

Few authors have looked at admissions in Spain of patients with acute asthma attacks. The aim of this study was to determine the clinical profile of such patients and analyze factors influencing disease course after release.

Asthmatics admitted to our hospital were enrolled prospectively over 12 consecutive months. The patients were telephoned one and four months after release. Demographic and clinical data were collected in addition to data on exacerbations, readmissions, treatment and medical follow-up.

Sixty-five patients (44 women and 21 men, mean age 45, SD 19). Most (54%) were admitted in autumn and the most common cause of exacerbation was respiratory tract infection (68%). Before admission, 54% had severe asthma, 32% had moderate asthma and 14% had mild asthma. At least one exacerbation occurred for 54% of patients, while 38% required emergency assistance and 19% were readmitted. Two patients (3%) died of asthma. Multiple factor logistic regression analysis showed a relation between the appearance of exacerbation after release and greater severity of asthma and the absence of long-lasting (beta-adrenergic drugs. Readmission was related to shorter duration of treatment with oral glucocorticoids after release and a higher number of prior hospital admissions.

1) Admission due to asthma occurs mainly in autumn and is probably related to respiratory infections, rather than exclusively to severe asthma. 2) After release, short-term morbidity and mortality due to the disease are high. 3) Disease severity itself and inadequate treatment are both related to poor clinical course after release.