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MINERVA ANESTESIOLOGICA

A Journal on Anesthesiology, Resuscitation, Analgesia and Intensive Care


Official Journal of the Italian Society of Anesthesiology, Analgesia, Resuscitation and Intensive Care
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ORIGINAL ARTICLES  CRITICAL AND INTENSIVE CARE


Minerva Anestesiologica 2003 November;69(11):835-40

language: English, Italian

Non-invasive mechanical ventilation in patients with acute cardiogenic pulmonary edema

Minuto A., Giacomini M., Giamundo B., Tartufari A., Denkewitz T., Marzorati S., Palandi A., Stabile L., Iapichino G.

Division of Anesthesiology and Resuscitation University of Milan, “San Paolo” Hospital, Milan, Italy


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Aim. To evaluate the use of noninvasive mechanical ventilation (NIMV) in patients with acute cardiogenic pulmonary edema.
Methods. Design: prospective study. Setting: Emergency Department at a University hospital. Patients: 84 patients with acute respiratory distress due to pulmonary edema. Interven-tions: NIMV, using a pressure support mode and positive end-expiratory pressure (PEEP). A “weaning test” to evaluate clinical stability. Measurements: heart rate, arterial blood pressure, respiratory rate, arterial blood gases, electrocardiogram and incidence of myocardial infarction before and after NIMV. Mortality and duration of hospital stay were also considered.
Results. A total of 84 patients received NIMV with 14±3.6 cm H2O pressure support over PEEP of 8.3±2.1 cm H2O and FiO2 1. At the end of the study period, 16 patients (19%) were considered “non responders” and required invasive ventilation; 62 patients (74%) were considered “responders” and subsequently transferred to the medical ward. The hospital mortality was 14% and 25% in the “responder” and “non responder” groups, respectively; the length of stay was 15.7±10.1 days in the “responder” group vs 16±10.6 days in the “non responder” group. We never found new episodes of myocardial infarction related to NIMV. The only significant difference between “responder” and “non responder” patients was arterial blood pressure.
Conclusion. We hypothesize that “non responder” patients, characterized by blood pressure values lower than “responders”, are less “cardiocompetent” and thus unable to cope with the increased work of breathing. NIMV avoided Intensive Care Unit admission for 74% of the observed patients.

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