Researcher:
Gürkan, Yavuz

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Yavuz

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Gürkan

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Gürkan, Yavuz

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2019 - 201952020 - 202332

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Now showing 1 - 10 of 38
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    Erector spinae plane block RIP block or not?
    (BMJ Publishing Group, 2021) Coşarcan, Sami Kaan; Aksu, Can; Gürkan, Yavuz; Manici, Mete; Faculty Member; Faculty Member; School of Medicine; School of Medicine; 154129; 113502
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    Response to comments on our letter
    (Bmj Publishing Group, 2020) Cosarcan, Sami Kaan; Dogan, Alper Tunga; Ercelen, Omur; N/A; Gürkan, Yavuz; Faculty Member; School of Medicine; 154129
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    The role of ultrasonography to estimate gastric content in a case with aspiration risk
    (Anestezi Dergisi, 2021) Gürkan, Yavuz; Karakaya, Muhammet Ahmet; Özkalaycı, Özlem; Çetin, Seçil; Alper, Emrah; Darçın, Kamil; Faculty Member; Doctor; Doctor; Doctor; Faculty Member; Teaching Faculty; School of Medicine; N/A; N/A; N/A; School of Medicine; School of Medicine; Koç University Hospital; 154129; N/A; N/A; N/A; 220444; 203217
    In this case report we present our experience in measuring the gastric volume of a mentally-motor retarded patient for percutaneous endoscopic gastrostomy replacement. The antrum of the stomach was visualized in the subcostal region of the sagittal plane with an ultrasound probe. Anteroposterior, and right-left lateral diameters were measured. Using these measurements, the antrum cross-sectional area and then the gastric volume were calculated. Ultrasonography should be kept in mind as a good alternative approach to evaluate the gastric volume in cases with aspiration risk. © Copyright Anesthesiology and Reanimation Specialists’ Society. This journal published by Logos Medical Publishing. Licenced by Creative Commons Attribution 4.0 International (CC)
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    Anterior approach to suprascapular nerve block provides effective analgesia for shoulder pain following thoracic surgery
    (Aves, 2023) N/A; N/A; Manici, Mete; Salgın, Belitsu; Gürkan, Yavuz; Faculty Member; Researcher; Faculty Member; School of Medicine; School of Medicine; School of Medicine; Koç University Hospital; Koç University Hospital; Koç University Hospital; 113502; 327625; 154129
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    Time for reappraisal: in the light of scientific data
    (Bmj Publishing Group, 2021) Cosarcan, Sami Kaan; Dogan, Alper Tunga; Ercelen, Omur; N/A; Gürkan, Yavuz; Faculty Member; School of Medicine; 154129
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    Could interscalene block possibly be protective against cerebral ischemia during shoulder surgery in a beach chair position?
    (Cureus INC, 2021) Cosarcan, Sami Kaan; Dogan, Alper Tunga; Koyuncu, Özgür; Ercelen, Omur; N/A; Gürkan, Yavuz; Faculty Member; School of Medicine; 154129
    Introduction Arthroscopic shoulder surgeries are usually performed in a sitting position. The sitting position is known to cause physiological changes related to cardiovascular adaptation. Interscalene nerve blocks (ISB) are the most commonly used techniques and are considered gold standard regional anesthesia methods for shoulder surgeries. Cerebral vessels located around sympathetic ganglia provide sympathetic system integrity. This local anesthetic spreading during ISB could be a side effect or provide a protective effect on cerebral ischemia. Our study aimed to investigate the cerebral protective effect of the ISB in arthroscopic shoulder surgeries in a sitting position. Material and methods After the approval of Koc University Clinical Research Ethics Committee (2020.020.IRB1.011), records of patients between January and December 2019 with shoulder arthroscopy at the Vehbi Koc Foundation (VKV) American hospital were retrospectively reviewed. Records of the hemodynamic response, INVOSTM (Medtronic, Minneapolis, USA) (rSO2) parameters, pain scores, and additional analgesic needs of all cases were examined in the intraoperative and postoperative period. Results Data of 40 patients who met the criteria to be included in the study was analyzed. Our study showed that the sitting position leading to hypotension coincided with a decrease in INVOS values. Nevertheless, we did not record any significant hypotension after ISB, and this may be due to the use of a minimal dose of local anesthetic. There was a certain increase in near-infrared spectroscopy (NIRS) values after ISB. We saw that the value of regional oxygen saturation (rSO2) increased on both the ISB side and the non-ISB side. This shows that the ISB can have a global impact on the brain. Specificially, the increase in rSO2 values in the ISB side compared to the other side suggests that ISB has possible positive effects on cerebral blood flow. Conclusion Our study has shown that ISB may transiently increase the rSO2 levels in the sitting position during shoulder surgery.
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    Rhomboid intercostal block for scapulothoracic arthrodesis
    (Elsevier Science Inc, 2021) N/A; N/A; N/A; N/A; Gürkan, Yavuz; Gedik, Cemil Cihad; Manici, Mete; Darçın, Kamil; Faculty Member; Researcher; Faculty Member; Teaching Faculty; School of Medicine; School of Medicine; School of Medicine; School of Medicine; 154129; 327612; 113502; 203217
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    Lumbar erector spinae plane block: a miracle or self-persuasion?
    (BMJ Publishing Group, 2021) Tulgar, Serkan; Ahiskalioglu, Ali; Aydin, Muhammed Enes; Jadon, Ashok; Forero, Mauricio; Gürkan, Yavuz; Faculty Member; School of Medicine; 154129
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    Artificial-coloring in ultrasound-guided regional anesthesia
    (Kare Yayıncılık, 2023) Araz, Coskun; Kus, Alparslan; N/A; Gürkan, Yavuz; Faculty Member; School of Medicine; 154129
    Objectives: Ultrasonography (US) is an important visualization technique in regional anesthesia. Increasing in quality of im-ages may lead to better conclusions. Our aim in this study was to evaluate the effect of artificial-coloring on image quality and practitioner's preferences.Methods: Ultrasound images of five block regions, interscalene, supraclavicular, infraclavicular, femoral, and popliteal were taken on a volunteer using gray scale. Then, the images were colored in seven different color scales using artificial-coloring technique. All participants were asked to fill in the structured questionnaire.Results: All created images were assessed by three specialist and 14 resident anesthesiologists. The highest scores about nerve recognition, distinguishing nerve from surrounding tissues, and visual clarity of fascicles were obtained with blue scale images; however, these findings were not significant compared to gray scale (p>0.05). Blue scale was chosen as a favorite scale by 53% of participants.Conclusion: Increasing the image quality and resolution while performing regional anesthesia under ultrasound guidance increases success and reduces complications. Artificial-coloring is one of the adjustments that can improve image quality. In our study, the results of coloring with blue were remarkable. However, more importantly than the color chosen, we believe that routine adjustments such as gain, depth, and focusing will bring important advantages. / Amaç: Ultrasonografi bölgesel anestezi sırasında kullanılan önemli bir görüntüleme tekniğidir. Görüntü kalitesinin artması sonuçları iyileştirir. Bu çalışmanın amacı, yapay renklendirmenin görüntü kalitesine ve uygulayıcı seçimlerine etkisini değerlendirmektir. Gereç ve Yöntem: İnterskalen, supraklaviküler, infraklaviküler, femoral ve popliteal bölge olmak üzere beş blok bölgesine ait ultrasonografi görüntüleri gri skalada alındı. Takiben görüntüler yapay renklendirme kullanılarak yedi farklı renge çevrilerek katılımcılar tarafından yapılandırılmış anket kullanılarak değerlendirildi. Bulgular: Görüntüler üç uzman ve 14 araştırma görevlisi tarafından değerlendirildi. Sinirin tanınması, çevre dokudan ayırt edilebilmesi ve fasiküllerin görülmesinin netliği hakkında en yüksek skor mavi skalayla oldu. Ancak bulgular gri skaladan istatistiksel olarak farklı değildi (p>0,05). Mavi skala katılımcıların %53’ü tarafından favori renk olarak tercih edildi. Sonuç: Ultrason eşliğinde bölgesel anestezi yapılırken görüntü kalitesi ve çözünürlüğün artması başarıyı artırır, komplikasyonları azaltır. Yapay renklendirme görüntü kalitesini artırabilecek ayarlamalardan biridir. Çalışmamızda mavi renk ile renklendirmenin sonuçları dikkat çekiciydi. Ancak, seçilen renkten daha önemlisi bu ayarın kazanç, derinlik ve odaklama gibi rutin yapılmasının önemli avantajları da beraberinde getireceği kanaatindeyiz.
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    Regional anaesthesia in the post-COVID Era
    (AVES, 2022) Gürkan, Yavuz; Manici, Mete; Adanur, Umut Deniz; Açıkalın, Eren Yavuz; Faculty Member; Faculty Member; N/A; N/A; School of Medicine; School of Medicine; School of Medicine; School of Medicine; 154129; 113502; 327611; 368621
    COVID-19 pandemic has changed clinical practice significantly. Trying to avoid airway manipulation to reduce viral transmission favoured regional anaesthesia techniques over general anaesthesia when feasible. In this case report, we share the anaesthetic care of a 45-year-old male with a history of intensive care unit admission due to COVID, positive pressure ventilation, and ECMO support. The patient was diagnosed with cubital tunnel syndrome, and his treatment was successfully applied as surgical release under infraclavicular block. This case is discussed in relation to recent trends in anaesthesiology, regarding patients with COVID-19 history.