Brazilian Journal of Pulmonology

ISSN (on-line): 1806-3756 | ISSN (printed): 1806-3713

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Early prognosis of acute asthma in the emergency room

Avaliação prognóstica precoce da asma aguda na sala de emergência

Deise Marcela Piovesan, Diego Milan Menegotto, Suzie Kang, Eduardo Franciscatto, Thaís Millan, Cristine Hoffmann, Lílian Rech Pasin, Josiane Fischer, Sérgio Saldanha Menna Barreto, Paulo de Tarso Roth Dalcin

J Bras Pneumol.2006;32(1):1-9

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Objective: To evaluate clinical and pulmonary function measurements taken in the first fifteen minutes of the assessment of acute asthma in the emergency room and used for prognostic purposes. Methods: A prospective cohort study involving consecutive patients with acute asthma. Only patients who were between the ages of 12 and 55 and presented peak expiratory flow rates < or = 50% of predicted were included. Evaluations were performed upon admission, then again at 15 minutes and 4 hours after the initiation of treatment. Treatment included albuterol and ipratropium delivered by metered-dose inhaler with a spacer, together with 100 mg of intravenous hydrocortisone. Favorable outcomes were defined as peak expiratory flow > or = 50% of predicted after 4 hours of treatment, and unfavorable outcomes were defined as peak expiratory flow < 50% after 4 hours of treatment. Results: Favorable outcomes were seen in 27 patients, and unfavorable outcomes were seen in 24 patients. In the multivariate analysis, peak expiratory flow as percentage of predicted was identified as the variable with the highest predictive value. A peak expiratory flow > or = 40% after 15 minutes of treatment showed significant power in predicting a favorable outcome (sensitivity = 0.74, specificity = 1.00, and positive predictive value = 1.00). A peak expiratory flow < 30% after 15 minutes of treatment was predictive of a poor outcome (sensitivity = 0.54, specificity = 0.93, and positive predictive value = 0.87). Conclusion: Our results suggest that measuring peak expiratory flow after 15 minutes of management in the emergency room is a useful tool for predicting outcomes in cases of acute asthma.

 


Keywords: Asthma; Acute disease; Respiratory mechanics; Prognosis; Emergency Service, Hospital; Cohort studies

 


Effect of a clinical protocol on the management of acute asthma in the emergency room of a university hospital

Efeito da implantação de um protocolo assistencial de asma aguda no serviço de emergência de um hospital universitário

Pérsio Mariano da Rocha, Andréia Kist Fernandes, Fernando Nogueira, Deise Marcela Piovesan, Suzie Kang, Eduardo Franciscatto, Thaís Millan, Cristina Hoffmann, Carísi Anne Polanczyk, Sérgio Saldanha Menna Barreto, Paulo de Tarso Roth Dalcin

J Bras Pneumol.2004;30(2):94-101

Abstract PDF PT

Background: There is a wide variability in clinical practice for treating acute asthma (AA) in the emergency room (ER) interfering in the quality of management. Objective: To evaluate the impact of a clinical protocol for care of acute asthma in the ER of the Hospital de Clínicas de Porto Alegre. Method: In this hospital a cross-sectional study was conducted before and after implementation of the protocol, of consecutive patients presenting with acute asthma in the adult ER (age ³ 12 years). The intention was to measure the effect of recommendations on the objective assessment of severity, utilization of diagnostic tools, proposed therapy, not recommended therapy and on the outcomes. Results: The pre-protocol group comprised 108 patients and the protocol group comprised 96 patients. There was a significant increase in the use of pulse oximetry (8% to 77%, p<0.001) and PEFR (5% to 21%, p<0.001). There was an increase in the utilization of radiology (33% to 66%, p<0.001) and in that of blood tests (11% to 25%, p=0.016). There was also an increase in the number of patients receiving the three recommended nebulizations in the first hour (22% to 36%, p=0.04). Although the overall use of corticosteroids did not change, there was a significant increase in the use of oral steroids (8% to 28%, p<0.001). There was no significant difference in the not recommended therapy, time of stay and outcomes. Conclusion: The acute asthma clinical protocol used in the ER was associated to a positive effect on the objective assessment of severity of asthma and on the use of the recommended therapy. No other significant influence on the treatment or on the outcome was perceived.

 


Keywords: Clinical protocols. Asthma. Emergency medicine.

 


 

 


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