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    Effect of Continuous Positive Airway Pressure Treatment on Mean Platelet Volume and Platelet Distribution Width in Patients with Sleep Apnea Syndrome
    (Aves, 2016) Cortuk, Mustafa; Simsek, Gokce; Kiraz, Kemal; Haytoglu, Suheyl; Zitouni, Burcak; Muluk, Nuray Bayar; Arikan, Osman Kursat
    Objective: Obstructive sleep apnea (OSA) syndrome is a common disorder that can cause hypercoagulation. Mean platelet volume (MPV) and platelet distribution width (PDW) are associated with hypercoagulability. This study aimed to investigate whether MPV and PDW values change in patients with OSA who were treated with continuous positive airway pressure (CPAP) device. Methods: A total of 43 adult patients with OSA who were treated with CPAP were included in this retrospective study. Patients who underwent CPAP treatment for <5 days/week and <4 h/day were excluded. Blood parameters, including MPV and PDW, were recorded before CPAP treatment and at the third month of CPAP treatment. All patients underwent polysomnographic evaluation with full night polysomnography and in the second night CPAP titration was performed together with full night polysomnography and MPV and PDW values were statistically compared before and after CPAP treatment. Results: Apnea hypopnea index was significantly reduced, whereas oxygen saturation was significantly increased at CPAP titration night (p<0.001). The third month of CPAP treatment resulted in significantly low PDW (p=0.004) values, but MPV values did not change. Conclusion: PDW value at the third month of CPAP treatment revealed a significant improvement compared with the values before treatment; moreover, no change was observed in MPV values. It was concluded that in patients with OSA who were treated with CPAP, activation of platelets may result in recovery.
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    Mean Platelet Volume Decreases in Adult Patients With Obstructive Sleep Apnea After Uvulopalatal Flap Surgery
    (Lippincott Williams & Wilkins, 2015) Simsek, Gokce; Haytoglu, Suheyl; Muluk, Nuray Bayar; Arikan, Osman Kursat; Cortuk, Mustafa; Kiraz, Kemal
    Aim:The main purpose of the study was to investigate changes in mean platelet volume (MPV) values in patients with obstructive sleep apnea syndrome (OSAS) who had undergone uvulopalatal flap (UPF) surgery.Method:The study included a review of the medical records of 37 adult patients who had undergone UPF surgery after being diagnosed with OSAS. The baseline blood parameters of patients, including the MPV and platelet distribution width (PDW) values, were measured and repeated 3 months after treatment. Polysomnographic evaluations of the patients were also performed during admission and the 3rd month control. Comparisons of MPV values and their correlation with polysomnographic parameters were the main outcomes measured.Results:The blood parameters of all patients were similar except for MPV values, which were significantly lower after treatment (P<0.001). Patients' apnea hypopnea index (AHI) and apnea episodes were significantly reduced after the UPF surgery, whereas their oxygen saturation significantly increased (P<0.001). The MPV values were not correlated with polysomnographic parameters (P>0.05).Conclusion:The UPF surgery, which is a relatively simple surgical intervention to treat OSAS, alleviates nocturnal hypoxic episodes and lowers platelet volume. These may both be important predictors of adverse cardiovascular outcomes related to OSAS.