Preoperative Versus Postoperative Ultrasound Guided Quadratous Lunborum Block for Postoperative Analgesia Following Open Nephrectomy, Acomparative Study

In the immediate postoperative period, nerve blocks are considered a type of multimodal analgesia and have recently been proposed as analgesic options for patients undergoing open nephrectomy .

Pain is defined as an unpleasant sensory and emotional experience associated with actual or potential tissue damage. The main barrier to early postoperative ambulation is postoperative pain, which also lengthens hospital stays and raises the risk of respiratory problems and venous thromboembolism. Therefore, strict perioperative pain management can have both immediate and long-term advantages .

QLB provides early and rapid pain relief and allows early ambulation in certain patient populations. Multiple case studies also confirmed the QLB to be a rescue block after different surgical procedures. Complications associated with the performance of abdominal wall blocks are fortunately very rare. However, studies on the effect of anterior QLB on postoperative opioid consumption are scarce .

Regional anesthesia is quickly moving toward using ultrasound guidance as the gold standard. The use of ultrasound has significant advantages over traditional treatments such as nerve stimulation and loss of resistance. The improved safety and efficacy that ultrasound brings to regional anaesthesia will help promote its use and realise the benefits that regional anaesthesia has over general anaesthesia, such as decreased morbidity and mortality, superior postoperative analgesia, cost-effectiveness, decreased postoperative complications and an improved postoperative course .

The aim of the present study is to compare the effectiveness of ultrasound-guided preoperative to postoperative QLB on the postoperative pain scores after Radical nephrectomy.