Clinical Research Directory

Cervical Lordosis: Imaging Position and Measurement

This retrospective cross-sectional study aims to compare cervical lordosis measurements obtained from standing lateral radiographs and supine magnetic resonance imaging (MRI) in individuals without structural cervical pathology. The study also evaluates the independent contribution of T1 slope to cervical alignment and investigates whether imaging modality significantly alters measured lordosis values.

Comparison of the Effect of Body Position (Supine and Semi-Fowler's) on Pain Level During Invasive Procedures in Children Aged 1-6 Years

The purpose of this clinical trial is to find out whether different body positions (lying on the back or semi-sitting) can reduce pain in children aged 1-6 years during procedures such as blood sampling and intravenous line insertion. This study will be conducted specifically with children aged 1-6 years and aims to determine which position is less painful for them. The main questions this study aims to answer are: Which position causes less pain: lying on the back (supine) or semi-sitting (Semi-Fowler's)? Does the level of pain experienced by children during the procedure change depending on the position? The researchers will compare children in these two different positions to evaluate which one results in less pain. What is expected from participants: Children will undergo routine hospital procedures such as blood sampling or intravenous line insertion. During the procedure, children will be randomly placed in either the supine or semi-sitting position. Researchers will observe and record the child's pain level using a special assessment scale. This study aims to identify the most suitable position that may help children feel less pain during these procedures.

Hemodynamic Effects of Surgical Position in Prone vs. Supine Percutaneous Nephrolithotomy

This prospective, randomized controlled study evaluates the hemodynamic effects of prone and supine positions during percutaneous nephrolithotomy (PNL) for large kidney stones. Surgical position may influence intraoperative and postoperative hemodynamic stability. Prone positioning can increase intrathoracic pressure and reduce venous return, whereas supine positioning may provide greater hemodynamic stability. A total of 84 patients will be randomized to undergo PNL in prone or supine positions. Primary outcomes include changes in hemodynamic parameters during surgery. Results may guide surgical position selection, especially in patients with potential hemodynamic risk.