The relationship between the systemic immune-inflammation index and obstructive sleep apnea

Correlation of polysomnography data and inflammatory markers after sleep surgery

BACKGROUND

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

OBJECTIVES

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

METHODS

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.

RESULTS

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).

CONCLUSIONS AND SIGNIFICANCE

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

Is there a relationship between the severity of obstructive sleep apnea syndrome and the systemic immune inflammation index?

AIM

Vascular dysfunction, oxidative stress and systemic inflammation are considered responsible for the pathophysiology of Obstructive sleep apnea syndrome (OSAS). It is thought that desaturation due to apnea-hypopnea attacks in OSAS patients activates inflammatory pathways. In this study, we aimed to reveal the relationship between inflammation parameters Systemic immune inflammation index (SII), neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratios (PLR) severity of OSAS in patients who underwent polysomnography in our hospital's sleep laboratory.

METHODS

We grouped our 171 patients who were followed up in our sleep laboratory with the diagnosis of OSAS according to their AHI values. We evaluated the correlation of SII, NLR, and PLR values obtained from the complete blood tests of our patients with OSAS diagnosis and OSAS severity.

RESULTS

The mean NLR, PLR and SII values of patients with OSAS were statistically significantly higher than those without OSAS (p < 0.05). A positive correlation of 18% was found between the presence of OSAS and the SII value (p = 0.016). No statistically significant difference was found when comparing OSAS severity and NLR, PLR and SII values (p > 0.05).

CONCLUSION

We observed that SII, NLR and PLR parameters, which are rapidly assessable systemic inflammation markers of this process, were independently associated in patients diagnosed with OSAS and that there was no change in SII, NLR, and PLR parameters with OSAS severity.