COVID-19 Linked to Increased Risk of Sleep Apnea Years After Infection

Recent research indicates a connection between SARS-CoV-2 infection and a heightened risk of developing obstructive sleep apnea (OSA), even up to 4.5 years post-infection. While pre-existing OSA has long been known to worsen COVID-19 outcomes, emerging evidence suggests the virus can also contribute to the development of new-onset OSA.

COVID-19 and OSA: A Two-Way Street

Prior studies have established that individuals with pre-existing obstructive sleep apnea experience more severe outcomes from COVID-19. Research demonstrates that OSA is associated with more severe acute coronavirus disease-2019 (COVID-19) outcomes. Now, a growing body of evidence suggests that COVID-19 infection itself may modestly increase the risk of developing OSA in both hospitalized and non-hospitalized individuals.

Study Findings: Elevated Risk Across the Board

A retrospective cohort study analyzing data from over 910,000 adults tested for SARS-CoV-2 found a significant association between COVID-19 and new-onset OSA. Hospitalized COVID-19 patients exhibited a 41% higher risk, while those infected without hospitalization had a 22% elevated risk, compared to uninfected individuals. These findings remained consistent even after accounting for demographic, clinical, socioeconomic, and vaccination factors.

Similar results emerged when comparing the cohort to a pre-pandemic control group, and vaccination status did not significantly alter the risk of developing OSA.

How Could COVID-19 Trigger OSA?

Researchers propose several potential mechanisms linking COVID-19 to OSA development. The virus can cause persistent systemic inflammation, autonomic dysregulation, and central nervous system involvement – all of which can disrupt sleep and breathing regulation. Severe COVID-19 cases often involve prolonged immobilization and corticosteroid use, both known risk factors for OSA. Long COVID symptoms may impair respiratory function and sleep architecture, potentially contributing to OSA even in less severe cases.

OSA develops from a combination of anatomical factors (like pharyngeal collapsibility and obesity-related airway narrowing) and non-anatomical contributors (impaired neuromuscular control, altered ventilatory control, and systemic inflammation). SARS-CoV-2 infection may unmask these vulnerabilities.

Increased Health Risks Following OSA Onset

The study also revealed that COVID-19 patients who subsequently developed OSA faced increased risks of other health complications. Hospitalized patients with new-onset OSA had higher rates of incident heart failure and pulmonary hypertension, while non-hospitalized patients experienced a greater risk of obesity.

Clinical Implications and Future Directions

These findings underscore the importance of increased clinical vigilance for OSA-related symptoms in individuals recovering from COVID-19, particularly those with pre-existing risk factors or a history of hospitalization. Early screening and intervention for OSA may be warranted, given the significant cardiovascular and cognitive risks associated with untreated sleep apnea. Further research is needed to fully understand the long-term effects of COVID-19 on sleep and respiratory health.