Fig. 2: The hypoxic ventilatory response (HVR) based on minute ventilation, tidal volume (VT) and breathing frequency (fB).
From: Carotid body dysregulation contributes to Long COVID symptoms
A more negative response indicates a greater HVR. Closed circles are control and open circles are long-COVID participants. The red dots denote control participants that did not have COVID-19 (n = 6). Panels a–c show the hypoxic ventilatory response based on minute ventilation, tidal volume and breathing frequency, respectively. There was a higher HVR based on minute ventilation and tidal volume in the participants with long COVID (n = 14) versus control (n = 14). Panels d–f show the heart rate, systolic and diastolic blood pressure hypoxic responses. Data are the slope of the linear regression where SpO2% was plotted against the heart rate, and BP during each hypoxic exposure. There was no difference in the HR or BP response to hypoxia between groups. Data are mean +/-SD.
