To examine the effects of oxygen therapy methods applied as indicated in COPD acute exacerbations on blood gas results and spirometric measurements.
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Arterial blood gas and spirometry values will be examined before and after treatment administration to patients.
Timeframe: Patients will receive 2-hour treatment (EzPAP and NIMV) and then measurements will be taken 30 minutes after the completion of treatment in both groups.
Evaluation of the patient's mortalite after treatment.
Timeframe: The 30-day mortality of the patients will be evaluated.