Amaç: Çalışmada hekimlerin asistanlık yıllarına göre tükenmişlik düzeylerini belirlemek ve tükenmişliğin, sosyo-demografik özel-likler, eğitim, uyku alışkanlıkları, sigara ve alkol tüketimi gibi değişkenlerle ilişkilerinin değerlendirilmesi amaçlanmıştır.Yöntemler: Etik Kurul onayı ile araştırmanın evrenini hastanemizde görev yapan 1.,2.,3.,4 ve 5. yıl (n=127) asistanları oluştur-maktadır. Değerlendirme anketinde asistanların sosyo-demografik durumu, mesleki bilgileri içeren bilgi formu ile "Maslach Tüken-mişlik Envanteri" kullanılmıştır.Bulgular: Çalışma %44,1'i (n=56) erkek, %55,9'u (n=71) kadın 127 asistan ile yapılmıştır (Coranbach Alfa(α)=0,873). Birinci yıl asistanların %57'si sigara, %54'ü alkol kullanmaktadır. %2'si nöbet izni kullanırken, %61'i uyku düzensizliğinden şikayetçidir. %60'ı mesleği isteyerek seçtiklerini bildirmişlerdir. Stresle baş etmede %61'inin arkadaşlarla konuşmayı, %32'sinin alışverişe çıkmayı seçtiği gözlenmiştir. Asistanlık yıllarına göre Maslach Tükenmişlik ölçeği "Duygusal Tükenme" ve "Duyarsızlaşma" alt boyutunda istatistiksel olarak anlamlı farklılık saptanmıştır. İkinci yıl asistanların duygusal tükenme alt boyutundan aldıkları puanlar, 4. yıl asistanlara göre anlamlı düzeyde yüksek saptanmıştır. İkinci yıl asistanların duyarsızlaşma alt boyutundan aldıkları puanlar, 3. yıl ve 4. yıl asistanlara göre anlamlı düzeyde yüksek saptanmıştır "Kişisel Başarı" alt boyutunda ise istatistiksel olarak anlamlı farklılık saptanmamıştır.Sonuç: Tükenmişlik sendromu, anestezi asistanlığı sırasında sık rastlanan bir sorundur. Doğru tanımlama ve farkındalık, bu sendromu önlemede ilk önemli adımlar olabilir. Farklı yönetimsel yaklaşımların bu sendroma etkileri değelendirilmelidir. Anahtar kelimeler: Tükenmişlik sendromu, asistan, Maslach tü-kenmişlik envanteriObjective: The aim of this study is identified the degree of Burnout Syndrome (BOS) and find out its correlation with years of recidency and sociodemograpfic chareacteristics, training, sleeping habits, such as smoking and alcohol consumption. Methods:After approval from the Hospital Ethics Committee and obtaining informed consent, First, second, third, fourth and fifth year of recidency staff (n=127) working in our hospital were involved in this study. The standardized Maslach Burnout Inventory (MBI) was used in this study.Results: Fifty six male (44.1%) and seventy one female (55.9%) residents were enroled in this study (Coranbach Alfa(α)=0.873). 57% of the first year residents smokes cigaret and 54% of them use alcohol. 2% of them gets one day off after hospital night shift, 61% of them suffers from disturbed sleep. 60% of them had been stated that they willingly selected their profession. 61% of them prefers talking to friends and 32% of them prefers shopping to overcome stress. There were statistical difference acording to years of recidency in MBI, Emotional Burnout (EB) and desensitisation scale (DS) points. EB scale points of the second year of residency group was statisticaly higher than fourth year of residency group. DS points of ...

Purpose The incidence, patient features, risk factors and outcomes of surgery-associated postoperative acute kidney injury (PO-AKI) across different countries and health care systems is unclear. Methods We conducted an international prospective, observational, multi-center study in 30 countries in patients undergoing major surgery (> 2-h duration and postoperative intensive care unit (ICU) or high dependency unit admission). The primary endpoint was the occurrence of PO-AKI within 72 h of surgery defined by the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Secondary endpoints included PO-AKI severity and duration, use of renal replacement therapy (RRT), mortality, and ICU and hospital length of stay. Results We studied 10,568 patients and 1945 (18.4%) developed PO-AKI (1236 (63.5%) KDIGO stage 1500 (25.7%) KDIGO stage 2209 (10.7%) KDIGO stage 3). In 33.8% PO-AKI was persistent, and 170/1945 (8.7%) of patients with PO-AKI received RRT in the ICU. Patients with PO-AKI had greater ICU (6.3% vs. 0.7%) and hospital (8.6% vs. 1.4%) mortality, and longer ICU (median 2 (Q1-Q3, 1–3) days vs. 3 (Q1-Q3, 1–6) days) and hospital length of stay (median 14 (Q1-Q3, 9–24) days vs. 10 (Q1-Q3, 7–17) days). Risk factors for PO-AKI included older age, comorbidities (hypertension, diabetes, chronic kidney disease), type, duration and urgency of surgery as well as intraoperative vasopressors, and aminoglycosides administration. Conclusion In a comprehensive multinational study, approximately one in five patients develop PO-AKI after major surgery. Increasing severity of PO-AKI is associated with a progressive increase in adverse outcomes. Our findings indicate that PO-AKI represents a significant burden for health care worldwide. Supplementary Information The online version contains supplementary material available at 10.1007/s00134-023-07169-7.

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Power transformer transients, which are originated from non-linear operating characteristics, may cause failure of a power system. In this study, a special resonance phenomenon where overvoltages observed due to switching capacitances of the line is investigated. This situation is detected while high voltage side of the transformer is open circuit (no-load) and the low voltage side is connected to a transmission line through nonlinear switch (or breaker). This special resonance is caused by the interaction of leakage inductance of the transformer windings and the switching capacitance. A test setup containing 220V/34.5kV transformer is employed for realization of simulation results obtained by SPICE analysis. In order to simulate switching capacitance, a capacitance of 5.54μF is connected to low voltage side. The recorded and simulated test results show good correspondence. Observed overvoltages are analysed by continuous wavelet transform (CWT) and fast Fourier transform (FFT) techniques. Also the energy distribution, which is generated by overvoltages, is investigated by instantaneous energy levels.