End Tidal Carbon Dioxide

This single-center, prospective, observational study compares target-controlled infusion (TCI) versus manually administered total intravenous anesthesia (TIVA) for sedation in patients undergoing kyphoplasty in the prone position. The primary endpoints are the incidence of hypoxic episodes (SpO₂ \< 90%) and apneic attacks. Secondary endpoints include anesthesia quality scores, integrated pulmonary index (IPI) values, total propofol consumption, time to eye opening, time to full orientation, Modified Aldrete Scores and Richmond Agitation-Sedation Scale (RASS) scores in the recovery unit, and patient and surgeon satisfaction.

This prospective observational study aims to compare the ventilation performance and safety of the i-gel and SaCoVLM supraglottic airway devices in adult patients undergoing elective laparoscopic cholecystectomy. Ventilation-related parameters, airway sealing performance, insertion characteristics, and perioperative complications will be evaluated.

Physiological evaluation is part of the preoperative risk estimation in patients with lung cancer, and it aids in the choice of treatment. Ventilatory efficiency during exercise has emerged as a strong predictor of major postoperative complications, so far determined during a maximal cardiopulmonary exercise test. However, this test is limited by its availability and high cost, due to the requirement of high-technological equipment and advanced expertise. The current project aims to evaluate a simplified and accessible method for risk evaluation before decision on treatment in lung cancer. It builds on recent advances in technology and knowledge and combines a simple, low-intensity cycling test with measurement of ventilatory efficiency (end-tidal carbon dioxide pressure) with a handheld monitor. In a prospective, multi-center design the investigators will include patients evaluated for suspected lung cancer. The main objective is to establish threshold values for end-tidal carbon dioxide associated with low respectively high risk of major complications in patients undergoing surgery. In addition, the study aims to determine if end-tidal carbon dioxide can predict severe side-effects during neoadjuvant or curatively aiming systemic therapy. The project is closely linked to clinical practice, and the results can be easily implemented due to the simple and cost-efficient methodology. the suggested simplified approach would also allow access to physiological evaluation where more advanced methods are unavailable.