Clinical trials

This study will examine whether warming patients before colon resection surgery improves blood flow in the fingers during early recovery from general anesthesia. It will also compare two warming durations. A total of 108 adults scheduled for elective colon resection surgery at Kayseri City Hospital will be assigned by chance to one of three groups: 10 minutes of warming before anesthesia, 30 minutes of warming before anesthesia, or no active warming before anesthesia. All three groups will receive warming during surgery as part of routine care. Warming will be provided using a forced-air warming system. After surgery, a sensor placed on a finger will measure the perfusion index, a noninvasive indicator of blood flow, on arrival in the recovery unit and 5 and 10 minutes later. The main comparison will use the average of these three measurements. The researchers will also assess other circulation measurements, routine blood gas and lactate results, shivering, pain, the time until oral feeding begins, and wound infection during the 14 days after surgery.

This observational study will compare how accurately anesthesiology residents and an artificial intelligence system (hChestXR) identify abnormalities on chest X-rays. Approximately 35 volunteer anesthesiology residents at Kayseri City Hospital will review the same set of 150 anonymized posteroanterior chest radiographs selected from the hospital imaging archive. The set will include normal images and images showing findings such as infiltration, atelectasis, and pleural effusion. Two radiologists will independently assess the images and resolve disagreements by consensus to establish the reference standard. Residents will not see the radiologists' assessments or the artificial intelligence results while interpreting the images. The study will measure diagnostic accuracy and other measures of diagnostic performance. No additional imaging, treatment, or change in patient care is planned.