Clinical Research Directory

Anesthesia Maintenance With Target-controlled Infusion of Propofol and Remifentanil at Fixed Ratio

The impact of anesthesia depths on early postoperative neurocognitive complications after total intravenous anesthesia (TIVA) remains controversial. In some studies investigating TIVA, anesthesiologists mainly achieve the target depth of anesthesia by adjusting the dose of propofol, whereas the doses of opioids remains comparable between different anesthetic depth groups, possibly resulting inadequate analgesia. This study is aimed to investigate the impact of different anesthesia depths maintained by target-controlled infusion of propofol and remifentanil at a fixed ratio on the incidence of early postoperative neurocognitive complications in older patients undergoing noncardiac surgery.

Remimazolam TIVA-Flumazenil Antagonism in Short-duration ENT Surgeries

This study plans to categorize patients who underwent short-duration ENT surgeries with remimazolam TIVA combined with flumazenil antagonism based on whether their intraoperative BIS values were maintained below 60.

Anesthesia Type and Postoperative Sleep Quality in Septoplasty

This prospective observational study aims to evaluate the association between routinely applied anesthesia techniques and postoperative sleep quality in adult patients undergoing septoplasty. Patients will receive either total intravenous anesthesia or inhalational anesthesia according to standard clinical practice, without any intervention by the investigators. Postoperative sleep quality will be assessed using the Richards-Campbell Sleep Questionnaire on postoperative days 7 and 15. Secondary outcomes include postoperative pain intensity, opioid consumption, and postoperative nausea and vomiting.

Effect of Combined Intravenous-Inhalational Anesthesia (CIVIA) on Postoperative Recovery Patterns.

This study was planned as a single-center, prospective, randomized trial. Adult patients undergoing elective spinal surgery lasting longer than three hours, performed in a neurosurgery operating room, will be evaluated. Patients managed with three different anesthesia methods currently used will be examined for recovery patterns: 1. Total intravenous anesthesia (TIVA), 2. TIVA Combined anesthesia with sevoflurane and intravenous agents (sevoflurane-CIVIA), 3. TIVA Combined anesthesia with desflurane and intravenous agents (desflurane-CIVIA). Recovery patterns include; extubation time, eye opening time, emergence agitation, postoperative nausia and vomiting and postoperative recovery unit discharge time.

Processed EEG for Monitoring of Anesthetic Depth in Intracranial Tumor Surgery

An important feature of neurosurgical anesthesia is early postoperative recovery of consciousness with minimal residual sedation. This is a key factor to enable early neurological assessment and early discovery of postoperative complications. The goal of this single centre clinical trial is to compare propofol/remifentanil anesthesia delivered by manual total intravenous anesthesia (mTIVA) or target controlled infusion (TCI) for intracranial tumor resection via craniotomy. Anesthetic depth will be assessed by a simplified processed EEG (pEEG). The main question is time spent within recommended pEEG- levels from anesthesia induction until end of surgery. Secondary questions are: * mean pEEG-level, time from end of surgery to consiousness, * peroperative propofol/remifentanil consumption * postoperative degree of sleepiness * awareness assessment Participants are adults having have planned surgery for open resection of a brain tumor and will receive general anesthesia with propofol and remifentanil randomized to mTIVA or TCI. pEEG vill be blinded. * Participants will be asked to grade postoperative sleepiness using a specific scale * Follow up regarding awareness will be performed.

EVALUATION OF POSTOPERATIVE NEUROCOGNITIVE IMPAIRMENT

In this prospective study, the effects of different anesthesia methods (total intravenous anesthesia and inhaled anesthesia) on neurocognitive function will be examined in patients undergoing breast-conserving surgery without axillary lymph node dissection. Mini-Mental State Examination and Mini-Cog tests will be administered at specific intervals pre and postoperatively. Anesthesia management will follow standard protocols, and the researcher will not intervent in these processes. The relationship between the type of anesthesia and neurocognitive outcomes will be evaluated based on the collected data.

The Impact of a Dexmedetomidine Perfusion on Intraoperative Remifentanil Consumption

Opioids analgesic are the gold standard for intraoperative pain management. Their short- and long-term adverse effect motivate anesthesiologists to explore opioid sparing strategies. Dexmedetomidine is a highly selective α2 adrenergic receptor agonist that could help minimize opioid consumption both intraoperative and postoperative due to its sedative, analgesic and sympatholytic properties. This new randomized controlled trial (RCT) will answer the question whether an intraoperative dexmedetomidine infusion compared to placebo has a clinically significant impact on intraoperative remifentanil consumption during a laparoscopic abdominal elective surgery.

Intravenous Anesthesia by Targeted Controlled Infusion Versus Inhalational Anesthesia on the Surgical Stress Response

This study aims to compare the effect of total Intravenous anesthesia Target-controlled infusion (TIVA-TCI) with inhalational anesthesia on stress response.