inclusion criteria: * age ≥18 years at time of signing informed consent form * hospitalized with covid-19 pneumonia confirmed per who criteria (including a positive pcr of any specimen, e.g., respiratory, blood, urine, stool, other bodily fluid) and per the investigator, the respiratory compromise is most likely due to covid-19 * patient complaint of dyspnea at the time of presentation to ed or hospital * patient on room air or oxygen supplementation of no greater than 4 liters at rest to maintaining pulse oximetry of 92% or greater. this can include oxygen supplementation by any modality (bipap, cpap, hfnc, nrb, nc), with the exception of mechanical ventilation or ecls. * signed informed consent form by any patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representative * ability to comply with the study protocol in the investigator's judgment.

inclusion criteria: * age ≥18 years at time of signing informed consent form * hospitalized with covid-19 pneumonia confirmed per who criteria (including a positive pcr of any specimen, e.g., respiratory, blood, urine, stool, other bodily fluid) and per the investigator, the respiratory compromise is most likely due to covid-19 * patient complaint of dyspnea at the time of presentation to ed or hospital * patient on room air or oxygen supplementation of no greater than 4 liters at rest to maintaining pulse oximetry of 92% or greater. this can include oxygen supplementation by any modality (bipap, cpap, hfnc, nrb, nc), with the exception of mechanical ventilation or ecls. * signed informed consent form by any patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representative * ability to comply with the study protocol in the investigator's judgment.

inclusion criteria: - age ≥18 years at time of signing informed consent form - hospitalized with covid-19 pneumonia confirmed per who criteria (including a positive pcr of any specimen, e.g., respiratory, blood, urine, stool, other bodily fluid) and per the investigator, the respiratory compromise is most likely due to covid-19 - patient complaint of dyspnea at the time of presentation to ed or hospital - patient on room air or oxygen supplementation of no greater than 4 liters at rest to maintaining pulse oximetry of 92% or greater. this can include oxygen supplementation by any modality (bipap, cpap, hfnc, nrb, nc), with the exception of mechanical ventilation or ecls. - signed informed consent form by any patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representative - ability to comply with the study protocol in the investigator's judgment.

inclusion criteria: - age ≥18 years at time of signing informed consent form - hospitalized with covid-19 pneumonia confirmed per who criteria (including a positive pcr of any specimen, e.g., respiratory, blood, urine, stool, other bodily fluid) and per the investigator, the respiratory compromise is most likely due to covid-19 - patient complaint of dyspnea at the time of presentation to ed or hospital - patient on room air or oxygen supplementation of no greater than 4 liters at rest to maintaining pulse oximetry of 92% or greater. this can include oxygen supplementation by any modality (bipap, cpap, hfnc, nrb, nc), with the exception of mechanical ventilation or ecls. - signed informed consent form by any patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representative - ability to comply with the study protocol in the investigator's judgment.