• Eur J Emerg Med · Jun 2008

    Clinical Trial

    Noninvasive mechanical ventilation in patients with chronic obstructive pulmonary disease and severe hypercapnic neurological deterioration in the emergency room.

    • Killen Harold Briones Claudett, Mónica H Briones Claudett, Miguel A Chung Sang Wong, Michelle Grunauer Andrade, Christian X Cruz Pico, Cristhian X Cruz, Antonio Esquinas, and Gumersindo Gonzalez Diaz.
    • Pneumology Department of Military Hospital, Guayaquil, Ecuador. kyllenb@interactive.net.ec
    • Eur J Emerg Med. 2008 Jun 1;15(3):127-33.

    ObjectivesThe objective of this study was to assess the effectiveness of noninvasive motion ventilation (NIMV) in patients with chronic obstructive pulmonary disease (COPD), having infectious exacerbation and severe hypercapnic neurological dysfunction in the emergency room.DesignThis is a prospective interventional study.SettingThe study setting was the emergency room at the Military Hospital in Guayaquil, Ecuador.PatientsA total of 24 patients were studied. Twelve patients had acute exacerbation of their chronic obstructive pulmonary disease: they presented at the emergency room with severe neurological dysfunction, with a Glasgow Coma Scale (GCS) score of less than 8 and a pH of less than 7.25. These patients were compared with 12 controls who were being treated with invasive mechanical ventilation (IMV), who were then matched according to their GCS scores, pH status, Acute Physiology and Chronic Health Evaluation II (APACHE II) scores, and age.InterventionsWe evaluated the effectiveness and safety of applying a ventilatory strategy based on a biphasic positive airway pressure protocol in the emergency room.Measurements And ResultsThe pH, PCO2, and GCS scores, measured during the first 3 h, were predictors of success for the application of NIMV treatment (P<0.05). Mortality was 33.3 and 16.7% for the IMV and the NIMV groups, respectively (P=0.01). Days of IMV were 5.60+/-1.2 versus 3.6+/-1.1 for NIMV (P=0.006). Days of hospitalization were 11.1+/-4.7 for the IMV group and 6.5+/-1.9 for the NIMV group (P=0.001). The cumulative survival rates at 6 months were 71.4 and 80% for the IMV and NIMV groups, respectively (P=0.80).ConclusionWe consider that severe neurological dysfunction and pH of less than 7.25 do not constitute absolute contraindications to the use of NIMV. This kind of management can be implemented in the emergency room with favorable results.

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