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  • Küçük Resim
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    Evaluation of Mean Platelet Volume values in lean women with polycystic ovary syndrome
    (Professional Medical Publications, 2014) Silfeler, Dilek Benk; Kurt, Raziye Keskin; Yengil, Erhan; Un, Burak; Arica, Secil; Baloglu, Ali
    Objective: Mean Platelet Volume (MPV) is an important indicator of platelet activation. It is known that MPV increases in patients with coronory artery disease, diabetes mellitus, atherosclerosis and Polycystic ovary syndrome (PCOS). Our aim was to measure the MPV in lean patients with polycystic ovary syndrome. Methods: The present study was designed to examine the platelet function by measuring MPV in non-obese women with PCOS. A total of 50 outpatients with PCOS were included. The control group consisted of 50 healthy subjects. Serum platelet, MPV, and white blood cell (WBC) levels were compared and evaluated retrospectively in all participants. These values were compared by statistical analysis. Results: There were no statistically significant difference in between groups regarding MPV (p=0.357), WBC (p=0.414) and platelet (p=0.666). Conclusion: There are studies implying MPV increase in PCOS patients, in our patients MPV levels did not correlate with PCOS except for patients with obesity. We think that PCOS itself has no effect on MPV levels and obesity changes MPV levels.
  • Küçük Resim
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    Vascular effect of levonorgestrel intrauterine system on heavy menstrual bleeding: is it associated with hemodynamic changes in uterine, radial, and spiral arteries?
    (Taylor & Francis Inc, 2021) Sahin, Hanifi; Gungoren, Arif; Sezgin, Burak; Un, Burak; Sahin, Eda Adeviye; Dolapcioglu, Kenan; Bayik, Rahime Nida
    The aim of this study was to evaluate the clinical and blood flow changes associated with the use of a levonorgestrel-releasing intrauterine device (LNG-IUD) in patients with idiopathic heavy menstrual bleeding (HMB). LNG-IUD was inserted into a total of 91 patients (39.5 +/- 5.4 years) who were diagnosed with HMB. Uterine volume, ovarian volume, uterine, radial and spiral artery blood flow, Pictorial Blood Loss Assessment Chart (PBAC) scores, and other clinical and laboratory parameters were evaluated before and 12 months after insertion of LNG-IUD. Compared to pre-insertion values, LNG-IUD dramatically improved haemoglobin, PBAC scores, and endometrial thickness. Mean resistance indices of radial and spiral arteries significantly increased 12 months after insertion. Our study results suggest that a significant increase in the resistance indices of the intra-myometrial arteries in LNG-IUD users one year after insertion may be due to its local progestational effects, indicating a possible mechanism of LNG-IUD in reducing menstrual blood flow.Impact Statements What is already known on this subject?The mechanisms of action of LNG-IUD on heavy menstrual bleeding include atrophy, decidualization and vascular changes of in the endometrium, resulting endometrial suppression. However, the exact mechanism to stop bleeding is not clear. What do the results of this study add?The present study suggests that one of the effects of the LNG-IUD on heavy menstrual bleeding is its ability to increase the resistance indexes of the intra-myometrial arteries. What are the implications of these findings for clinical practice and/or further research?These results will foster further studies on the effects of LNG-IUD on intra-myometrial arteries and will further assure clinicians on the vascular effect of LNG-IUD during management of heavy menstrual bleeding which includes hysterectomy as a final step.