This study aims to compare lidocaine and dexmedetomidine infusion and their combination on perioperative pain in patients undergoing video-assisted thoracoscopic surgery.
Video-assisted thoracoscopic surgery (VATS) is a minimally invasive procedure allowing the reduction of surgical stress. However, postoperative pain management is crucial for patients undergoing VATS, as inadequate pain control can lead to complications (such as lung atelectasis), prolonged recovery, and decreased patient satisfaction. Dexmedetomidine has shown positive effects on postoperative pain intensity, opioid consumption and other recovery parameters, such as postoperative nausea and vomiting (PONV), and speed of recovery. Lidocaine has exhibited an excellent safety profile when administered as a low-dose infusion for cancer or non-cancer chronic pain.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
75
Patients will receive lidocaine 0.3 mg/kg over 10 min loading, 0.3 mg/kg/h infusion after induction of anesthesia as maintenance dose till 10 min before the end of the operation plus saline 0.9% with same rate of dexmedetomidine.
Patients will receive dexmedetomidine 0.5 μg/kg infusion over 10 min as a loading dose then 0.5 μg/kg/h after induction of anesthesia as maintenance dose till 10 min before the end of the operation plus saline 0.9% with same rate of lidocaine.
Patients will receive lidocaine (0.3 mg/kg in 10 min loading, 0.3 mg/kg/h infusion) and dexmedetomidine infusions (0.5 μg/kg infusion over 10 min as a loading dose then 0.5 μg/kg/h) till 10 min before the end of the operation.
Ain Shams University
Cairo, Egypt
RECRUITINGTotal morphine consumption
Rescue analgesia of morphine will be given as 3 mg bolus if the Visual Analogue Scale (VAS)\> 3 to be repeated after 30 min if pain persists until the VAS \< 4.
Time frame: 24 hours postoperatively
Time of extubation
Time from the end of surgery till extubation
Time frame: 24 hours postoperatively
Time to the first request for the rescue analgesia
Time to the first request for the rescue analgesia (time from end of surgery to first dose of morphine administrated).
Time frame: 24 hours postoperatively
Degree of pain
Each patient will be instructed about postoperative pain assessment with the Visual Analogue Scale (VAS). VAS (0 represents "no pain" while 10 represents "the worst pain imaginable"). VAS will be assessed at 0, 4, 8, 12, 18 and 24h postoperatively.
Time frame: 24 hours postoperatively
Degree of patient satisfaction
The degree of patient satisfaction will be assessed on a 5-point Likert scale patient satisfaction (1, extremely dissatisfied; 2, unsatisfied; 3, neutral; 4, satisfied; 5, extremely satisfied).
Time frame: 24 hours postoperatively
Incidence of adverse events
Incidence of adverse events such as bradycardia, hypotension, nausea, vomiting, pruritis, respiratory depression, lidocaine toxicity (such as lightheadedness, somnolence, perioral numbness, dry mouth, metallic taste, dysarthria or fits) or any other complication will be recorded.
Time frame: 24 hours postoperatively
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