Correlation of polysomnography data and inflammatory markers after sleep surgery

The occurrence of hypoxia during apneas and hypopneas is associated with the triggering of an inflammatory response.

This study investigates the alterations in polysomnography (PSG) data, inflammatory markers, and the correlation between these alterations in patients undergoing sleep surgery.

The data of 66 patients who underwent drug-induced sleep endoscopy followed by appropriate sleep surgery, with follow-up PSG performed at 3 to 6 months postoperatively, were retrospectively analyzed. Additionally, correlations with inflammatory markers, including the neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), lymphocyte-to-monocyte ratio (LMR), eosinophil-to-lymphocyte ratio (ELR) and systemic immune-inflammation index (SII), were investigated.

Comparison of preoperative and postoperative inflammatory markers revealed statistically significant reductions in NLR, PLR, and SII (p < 0.001, p = 0.023, p = 0.026, respectively). Significant positive correlations were identified between AHI and NLR (p = 0.001, r = 0.400), PLR (p = 0.001, r = 0.415) and SII (p = 0.010, r = 0.392). Similarly, a significant positive correlation was observed between supine AHI and NLR (p = 0.035, r = 0.379), PLR (p = 0.008, r = 0.325), and SII (p = 0.030, r = 0.367). The time spent with SaO₂ below 90% was found to be significantly and positively correlated with NLR (p = 0.023, r = 0.279), PLR (p = 0.027, r = 0.272), and SII (p = 0.033, r = 0.256).

A correlation was observed between the postoperative decrease in SII, NLR, and PLR values and PSG data in patients.