Aykut | The predictive impact of perioperative hypofibrinogenemia on re-exploration in cardiac surgery: Insights from a single-center analysis

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Research Articles | Challenge Journal of Perioperative Medicine

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Prediction of postoperative acute kidney injury after cardiopulmonary bypass cardiac surgery: The role of preoperative inflammatory indices and intraoperative perfusion stress

Mehmet Akif Yilmaz, Mehmet Zubeyir Guney, Nuray Uzun, Hasan Emre Kivanc, Ebubekir Sonmez, Muhammed Enes Aydin

Challenge Journal of Perioperative Medicine (2026) 4(1) 21-31

Background: Postoperative acute kidney injury is a frequent complication after cardiac surgery performed with cardiopulmonary bypass and is closely associated with increased mortality. This study aimed to evaluate the predictive value of preoperative renal fun...
Walking the tightrope: Anaesthesia for fragile hearts and overactive glands in elderly hip surgery

Ranganath Laxman Channappagoudar, Shilpa Shivananda

Challenge Journal of Perioperative Medicine (2026) 4(1) 38-41

Anesthetic management of elderly patients with ischemic heart disease, dilated cardiomyopathy with severe left ventricular dysfunction, and hyperthyroidism undergoing bipolar hemiarthroplasty presents unique challenges. Hyperthyroidism can exacerbate cardiac c...
Retrospective evaluation of analgesia approaches in patients undergoing thoracic surgery over the last one year: A single-center study

Mehmet Akif Yilmaz, Nuray Uzun, Elif Oral Ahiskalioglu, Ali Bilal Ulas

Challenge Journal of Perioperative Medicine (2025) 3(1) 1-7

Objective: Providing adequate analgesia after thoracic surgery plays an important role in preventing pulmonary complications while accelerating postoperative recovery. This study aimed to retrospectively evaluate the effectiveness of analgesia approaches appli...
Perioperative complications in patients undergoing urological surgery with spinal anesthesia: A prospective, observational study

Dilan Akyurt, Hija Yazıcıoğlu, Candan Haytural, Berna Demir, Ayşegül Özgök

Challenge Journal of Perioperative Medicine (2024) 2(2) 30-35

Background: Spinal anesthesia is widely used as the primary anesthesia method in urological surgeries, and this prospective observational study aimed to evaluate the associated complications.Materials and Method: Demographic data, procedures, and spinal anesth...
Behavior of multi-cell steel columns under impact loading

Kamel Kandil, Mostafa El-Shami, Ghada Mousa Hekal, Osama Magdy ElGouhary

Challenge Journal of Concrete Research Letters (2025) 16(2) 95-114

This study investigates the behavior of multi-cell steel columns (MCCs) under impact loading through both experimental and numerical analysis. Twelve specimens, including single-cell columns (SCC) and four-cell MCC configurations, were tested in empty and conc...