Browsing by Author "Ozdemir, Pinar G."

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Alterations in P Wave Duration and Dispersion in Depressive Patients Following Electroconvulsive Therapy
(Elsevier Science inc, 2012) Aydin, Adem; Gumrukcuoglu, Hasan Ali; Selvi, Yavuz; Besiroglu, Lutfullah; Ozdemir, Pinar G.; Ozdemir, Osman; Cegin, Bilal
Objective: Electroconvulsive therapy (ECT) consists of controlled convulsive seizure by electric stimulation of the brain. Although various electrocardiographic (ECG) changes have been reported during ECT, atrial conduction has not been studied extensively. The aim of the present study was to assess the effects of ECT on systemic arterial blood pressure and ECG parameters (P wave duration, P wave dispersion and heart rate). Methods: Thirty depressive patients undergoing ECT were included. Echocardiographic examination was performed on all patients before ECT sessions to exclude systolic heart failure and diastolic dysfunction which may affect P wave duration and dispersion. Twelve-lead ECG records were obtained before the first ECT and after the third session of ECT. Blood pressure was measured before and after convulsive therapy session. Results: Compared to baseline values, maximum P wave duration (99.3 +/- 14.6 to 111.3 +/- 8.2 ms, P=.001), P wave dispersion (50 +/- 14.8 to 63.3 +/- 10.3 ms, P=.001), and systolic (110.7 +/- 12 to 116 +/- 12.2 mmHg, P=.043) and diastolic blood pressures (70.7 +/- 9.4 to 75.3 +/- 8.2 mmHg, P=.028) were significantly increased after convulsive therapy session. Conclusions: We proposed that ECT alone or in combination with atypical antipsychotics or antidepressants may influence atrial conduction as evidenced by the significantly prolonged maximum P wave duration and P wave dispersion. Longer-term follow-up of patients undergoing ECT may be appropriate to evaluate the possible long-term outcomes of our short-term results. (C) 2012 Elsevier Inc. All rights reserved.
Relations Between Mood Characteristics, Circadian Preferences, and Functionality in Multiple Sclerosis
(Taylor & Francis Ltd, 2015) Ozdemir, Pinar G.; Milanlioglu, Aysel; Boysan, Murat; Cilingir, Vedat; Aydin, Nuri; Atli, Abdullah
Objective. Multiple sclerosis (MS) is a progressive disorder that results in demyelinization of the nerve fibers of the central nervous system. We aimed to determine chronobiological and mood features in patients with MS. Methods. The sample comprised 75 patients with MS (54 women and 21 men) and 50 healthy individuals (38 women and 12 men). Sixty-three patients were relapsing - remitting MS and twelve patients had secondary progressive-type MS. Mood characteristics were assessed using subscales of the Profile of Mood States (POMS). Chronotypical characteristics were determined by the Morningness-Eveningness Questionnaire (MEQ). Univariate and structural equation modeling was applied to untangle the possible connections between variables. Results. Both relapsing - remitting and secondary progressive patients scored higher on the depression - dejection and fatigue - inertia scales of the POMS than healthy individuals. Circadian preferences did not differ significantly between these groups. Patients using glatiramer acetate and other types of drugs had greater severity of functional impairment measured relative to interferon-beta treatment group. Glatiramer acetate had more negative effects on mood than interferon-beta therapy. This finding may be the result of significantly higher duration of disease and higher symptom severity scores in glatiramer acetate group. Conclusions. In the structural equation model, gender was found to be predictive for characteristics of mood.