Optimal Postoperative Pain Management After Lung Surgery (OPtriAL)

After correct placement of the epidural catheter, a local anaesthetic (ropivacaine, levobupivacaine or bupivacaine) will be started and, according to in house protocols, an opioid will be added to the epidural solution. A provisional stop of the administration of the epidural infusion is planned after 48 hours (on the second postoperative day).

The PVB catheter is placed under general anaesthesia at the beginning of the VATS procedure under direct thoracoscopic vision. The level of the PVB catheter placement is chosen at the intercostal space of the largest incision (mostly thoracic level 4 or 5). Under direct thoracoscopic vision, the surgeon inserts a Touhy needle. The tip of the needle is observed beneath the pleural surface thoracoscopically. Injection of about 2 mL ropivacaine 7.5mg/mL will create subpleural hydrodissection to reach the adequate paravertebral plane for placement of the catheter. The PVB catheter is subsequently placed under direct thoracoscopic vision and left next to the sympathetic chain in the paravertebral space. Next, a bolus of ropivacaine (total amount 20 mL including the given amount for hydrodissection) is given through the catheter. Postoperatively, a ropivacaine 2 mg/mL pump for continuous infusion is given with an infusion rate of 8-14 ml/hour.

At the end of the surgery a single shot ICNB will be placed at 9 levels (thoracic level 2 to 10) with 2-3mL local anaesthetics per intercostal space under direct thoracoscopic vision. The injection site will be chosen just lateral from the sympathetic trunk. This group will have no analgesic catheters for continuous analgesia. No mobility restrictions are instructed in this group.