Age between 18 to 85 years Ability to communicate and answer questions Consent to participate in the study and sign the informed consent form The patient is alert The patient should not be intubated The percentage of oxygen saturation of the patient's blood is below 93%

Age between 18 to 85 years Ability to communicate and answer questions Consent to participate in the study and sign the informed consent form The patient is alert The patient should not be intubated The percentage of oxygen saturation of the patient's blood is below 93%