COPD AND ASSESSMENT OF RADIOLABELED AEROSOL DURING NONINVASIVE VENTILATION

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• Presence of dyspnea; cardiopulmonary diseases (chronic obstructive pulmonary disease, pneumonia, cardiac failure, myocardial infarction, pneumothorax); hyperthermia; hemodynamic instability (heart rate \> 150 bpm and systolic blood pressure \< 90 mmHg); arrhythmia absence; pregnancy; and contraindications for use of NIV (29).