Control Group |
spinal anesthesia with Adductor canal block only |
3ml 0.5% hyperbaric bupivacaine at the L3/4 interspaces without any additives.in spinal anesthesia
15 ml of 0.25%bupivacaine for adductor canal block |
All patients will be given spinal anesthesia with 3ml 0.5% hyperbaric bupivacaine at the L3/4 interspaces without any additives. Patient will then lie supine and monitoring adequate level of anesthesia together with hemodynamics stability will be checked all through the operation.
Single injections for adductor canal block 10-20 minutes just before the skin incision |
patient will be prepared for spinal anesthesia , in sitting position under complete aseptic technique.
- Skin local infiltration using 3ml lidocaine 2% will be done first, then spinal needle 25G will be used. All patients will be given spinal anesthesia with 3ml 0.5% hyperbaric bupivacaine at the L3/4 interspaces without any additives. Patient will then lie supine and monitoring adequate level of anesthesia together with hemodynamics stability will be checked.
Ultrasound-guided Adductor canal block will be performed to patients in the supine position under complete aseptic conditions. A high frequency (6-15MHz) linear probe of ultrasound machine (Sonosite Edge II) will be positioned at the point midway between the anterior superior iliac spine and the upper pole of the patella. The adductor canal will be located as a hyperechoic structure beneath the sartorius muscle and after skin infiltration with 2ml of lidocaine 1%, a spinal needle 22G x 3.5 inches will be advanced with the guidance of ultrasound in an in-plane technique and bupivacaine 0.25% 15ml will be injected (not exceeding toxic dose of bupivacaine 2.5mg/kg).
|
30 |
Active-Treatment of Control Group |
Experimental Group |
Patients will recieve adductor canal block followed by IPACK block before total knee arthroplasty |
bupivacaine 0.25% 15ml will be injected incrementally . (Not exceeding toxic dose of bupivacaine 2.5mg/kg). |
single injection 10-20 minutes just before the skin incision |
- After skin infiltration with 2ml of 1% lidocaine, a spinal needle 22G x 3.5 inches will be advanced , with the guidance of ultrasound in an in-plane technique ,from the lateral aspect and directed across the space between the popliteal artery and femur and once the needle reaches the medial edge of the femur, nearly at the level of the popliteal artery, negative aspiration will be confirmed and bupivacaine 0.25% 15ml will be injected incrementally as the needle is withdrawn. (Not exceeding toxic dose of bupivacaine 2.5mg/kg).
- Intraoperative, heart rate, blood pressure, SpO2, and respiratory rate will be measured and recorded every 5 minutes.
|
30 |
|