Table 1.

Criteria for Classifying COVID-19 Severity at the Emergency Department

Mild

Covid-19 symptoms without pneumonia

Mild pneumonia confirmed by x-ray or CT scan CURB-65 <1

Oxygen saturation >90%

Intermediate

Respiratory rate <30

MEWS score <3

With chronic diseases, eg, COPD, CKD, obesity, diabetes, age >65 years

Severe

Pneumonia confirmed by x-ray or CT scan CURB-65 >2

Oxygen saturation <90%

Respiratory rate >30 per minute

MEWS score 3–4

CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; CT, computed tomography; disease severity scoring CURB-65, the combination of Confusion, Urea, Respiratory rate, Blood pressure, and Age ≥65; MEWS, Modified Early Warning Score consists of 5 physiological parameters, which include systolic blood pressure, pulse rate, respiratory rate, temperature, and level of consciousness.