New research indicates that while COVID-19 does not alter core sleep apnea physiology, it may affect how patients breathe after brief nighttime awakenings.
RT’s Three Key Takeaways:
- Core Physiology Stability: A study found no meaningful differences in upper-airway collapsibility, ventilatory control stability, or muscle compensation between individuals with and without a history of COVID-19.
- Heightened Arousal Response: Researchers identified that people who had experienced COVID-19 showed a significantly stronger breathing response following brief arousals from sleep.
- Treatment Considerations: This increased ventilatory response could potentially influence how sleep apnea presents or how patients respond to specific healthcare treatments.
A history of COVID-19 is not associated with significant changes to the primary physiological mechanisms of obstructive sleep apnea (OSA), according to a study published in the Journal of Clinical Medicine. However, the research revealed one notable difference: individuals who recovered from the virus exhibit a more intense breathing response after waking briefly during the night.
The study used a matched case-control design involving 120 participants to investigate whether COVID-19 alters the mechanisms underlying OSA. The team compared 60 people with a history of COVID-19 to 60 controls who had undergone laboratory-based polysomnography before the pandemic. Participants were matched for age, sex, body mass index (BMI), and the presence of sleep apnea.
The analysis found no meaningful differences between the groups regarding how easily the upper airway collapses, ventilatory control stability, or upper-airway muscle compensation. The results do not support broad changes in the major physiological traits underlying OSA among people with a history of COVID-19, the researchers said.
The only significant difference identified was a greater ventilatory response following arousal from sleep in the COVID-19 group. This heightened response could affect how the condition presents in patients or how they respond to specific healthcare interventions, though the clinical significance remains uncertain.
The study authors noted that the results provide a more nuanced picture of the relationship between the virus and OSA. Because the control group sleep studies were conducted before the pandemic, the findings should be confirmed through longitudinal research that evaluates the same individuals before and after infection, they said.
Future studies may also examine whether the severity of the initial infection, long-COVID symptoms, vaccination status, or the time elapsed since infection influences sleep-related breathing mechanisms.
