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- 저자 : Mut (검색결과 3 건)
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Evren Süer,Ömer Gülpinar,Cihat Özcan,Çağatay Göğüş,Seymur Kerimov,Mut Şafak 대한비뇨의학회 2015 Investigative and Clinical Urology Vol.56 No.2
Purpose: To evaluate the outcomes of rigid ureterorenoscopy (URS) for renal pelvic stones (RPS) sized 1 to 2 cm and to determinethe predictive factors for the requirement for flexible URS (F-URS) when rigid URS fails. Materials and Methods: A total of 88 patients were included into the study. In 48 patients, the RPS were totally fragmented withrigid URS and F-URS was not required (group 1). In 40 patients, rigid URS was not able to access the renal pelvis or fragmentationof the stones was not completed owing to stone position or displacement and F-URS was utilized for retrograde intrarenal surgery(RIRS) (group 2). The predictive factors for F-URS requirement during RIRS for RPS were evaluated. Both groups were compared regardingage, height, sex, body mass index, stone size, stone opacity, hydronephrosis, and previous treatments. Results: The mean patient age was 48.6±16.5 years and the mean follow-period was 39±11.5 weeks. The overall stone-free rate inthe study population was 85% (75 patients). In groups 1 and 2, the overall stone-free rates were 83% (40 patients) and 87% (35 patients),respectively (p>0.05). The independent predictors of requirement for F-URS during RIRS were male gender, patient height,and higher degree of hydronephrosis. Conclusions: Rigid URS can be utilized in selected patients for the fragmentation of RPS sized 1 to 2 cm with outcomes similar tothat of F-URS. In case of failure of rigid URS, F-URS can be performed successfully in this group of patients.
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Uremic pruritus and associated factors in hemodialysis patients: A multi-center study
( Nurten Ozen ),( Fatma Ilknur Cinar ),( Dilek Askin ),( Dilek Mut ) 대한신장학회 2018 Kidney Research and Clinical Practice Vol.37 No.2
Background: Uremic pruritus is a common and disturbing problem in hemodialysis patients. Although its pathogenesis is not completely understood, it is thought to be multifactorial. The aim of this study was to identify risk factors of uremic pruritus in hemodialysis patients. Methods: A total of 249 patients from four dialysis centers were included in this study. Data were collected using a questionnaire, the visual analogue scale, and the Hospital Anxiety and Depression Scale. We investigated whether socio-demographic and biochemical parameters were correlated to uremic pruritus. Results: Pruritus was present in 53.4% of the hemodialysis patients. The mean visual analogue scale severity was 6.47 ± 1.56. Patients with white blood cell (WBC) counts > 6.7 × 103/μL had 1.73 times (95% confidence interval [CI], 1.360-2.888; P = 0.036) more pruritus than did those with WBC counts < 6.7 × 103/μL. Patients with dry skin were 0.2 times (95% CI, 0.070-0.182; P = 0.028) more likely to suffer from very severe pruritus than were those with normal skin. Conclusion: Uremic pruritus remains a serious problem in dialysis patients. The WBC level and presence of dry skin are thought to be among its causes. Therefore, data regarding the possible risk factors of uremic pruritus must be followed closely in patients at risk.
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P+d Plus Sliding Mode Control for Bilateral Teleoperation of a Mobile Robot
Lucio R. Salinas,Diego Santiago,Emanuel Slawiñski,Vicente A. Mut,Danilo Chavez,Paulo Leica,Oscar Camacho 제어·로봇·시스템학회 2018 International Journal of Control, Automation, and Vol.16 No.4
This paper proposes a control scheme based on combining a PD-like structure and a sliding mode control (SMC) applied to mobile robot bilateral teleoperation systems, in the face of asymmetric and time-varying delays. The proposal includes on the remote site both a P+d control and an SMC strategy in such a way that the advantages of both methods are exploited. The system stability is analyzed using Lyapunov-Krasovskii functionals and a delaydependent stability criteria is obtained using linear-matrix-inequalities (LMI). Finally, the teleoperation system is evaluated through human-in-the-loop experiments to confirm the theoretical results and test the robustness and stability of the proposed control scheme.
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