Objective:

To describe persistent symptoms and spirometric values in mild and moderate post COVID-19 subjects.

Materials and methods:

An observational and retrospective study was conducted. Spirometry tests were performed in non-hospitalized subjects during follow-up, and clinical data, including the assessment of symptoms and dyspnea using the modified Medical Research Council (mMRC) scale, were collected.

Results:

The persistence of at least one post COVID-19 symptom was identified in 84 (93%) subjects, with headache being the most prevalent, followed by cough and muscle fatigue. Spirometry tests showed that 38 (42.2%) subjects had a restrictive pattern; 37 (41.1%), a normal pattern; and 15 (16.7%), an obstructive pattern. The median perception of dyspnea, according to the mMRC scale, was 2 (IQR 1-3) points. Significant differences were only observed in the mMRC scale when comparing the normal pattern with the restrictive one (p=0.002).

Conclusion:

This study revealed a prevalence of restrictive and normal patterns in spirometry tests. Although no significant differences in symptoms were observed between the groups, the high prevalence of persistent symptoms (93%), such as headache, cough, and muscle fatigue, is notable.

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