Association between Obstructive Sleep Apnea and Community-Acquired Pneumonia

Area of Science:

• Pulmonology
• Sleep Medicine
• Infectious Diseases

Background:

• Obstructive sleep apnea (OSA) is hypothesized to increase the risk of lower airway infections, including community-acquired pneumonia (CAP), via microaspiration.
• This study aimed to evaluate the association between OSA and CAP.

Purpose of the Study:

• To investigate the relationship between obstructive sleep apnea (OSA) and community-acquired pneumonia (CAP).
• To determine if OSA severity correlates with CAP severity.

Main Methods:

• A case-control study involving 82 CAP patients and 41 controls matched for age, sex, and BMI.
• Respiratory polygraphy (RP) was conducted on admission; pneumonia severity was assessed using the Pneumonia Severity Index (PSI).
• Logistic and linear regression models analyzed associations between OSA, OSA severity, Epworth Sleepiness Scale (ESS), and CAP, including its severity.

Main Results:

• Patients with OSA (Apnea-Hypopnea Index [AHI] ≥10) had a significantly increased risk of CAP (OR = 2.86).
• Severe OSA (AHI ≥30) and increasing OSA severity (AHI quartiles) were also significantly associated with higher CAP risk.
• Both OSA and its severity were significantly associated with increased CAP severity (p=0.0002 and p=0.0006, respectively).

Conclusions:

• Obstructive sleep apnea (OSA) and its severity are linked to community-acquired pneumonia (CAP) and its severity.
• These findings support a potential role for OSA in CAP pathogenesis, suggesting clinical implications.
• Further research is recommended to explore the interplay of OSA, gastroesophageal reflux, silent aspiration, and laryngeal sensory dysfunction in CAP.