Efficacy of Ultrasound Guided ESP Vs Video-assisted PVB Catheter Placement in Minimally Invasive Thoracic Surgery

Erector Spinae block: A bolus of 20 ml 0.375% Levobupivacaine will be administered into the erector spinae plane prior to surgical incision. A further bolus of 10 ml 0.25% Levobupivacaine will be given at skin closure if it has been greater than 1 hour after the first bolus of local anaesthetic medication. A continuous infusion of 0.125% Levobupivacaine will be commenced via the sited nerve catheter for postoperative analgesia. This will be started at 10 ml/hr and titrated to effect to a maximum rate of 15 ml/hr.

Paravertebral block: A bolus of 20 ml 0.375% Levobupivacaine will be administered into the paravertebral space after the thoracoscopic ports have been sited. A further bolus of 10 ml 0.25% Levobupivacaine will be given at skin closure if it has been greater than 1 hour after the first bolus of local anaesthetic medication. A continuous infusion of 0.125% Levobupivacaine will be commenced via the sited nerve catheter for postoperative analgesia. This will be started at 10 ml/hr and titrated to effect to a maximum rate of 15 ml/hr.