Phrenic nerve block, the rescue management for pneumothorax after retrolaminar block

Retrolaminar block (RLB) has developed as a safer and easier alternative to paravertebral block (PVB). We hereby present a case of inadvertent complication of pneumothorax after administration of blind retrolaminar block. The detection of pneumothorax was made post-operatively by Point of Care Ultrasound (POCUS). Immediate rescue management was done by giving ipsilateral phrenic nerve block. The uplifting of diaphragm due to paralysis causes a reduction in chest volume, promoting the symphysis of two pleura and sealing of air leaks from lung. This appears to be an effective way to manage mild to moderate pneumothorax without intercostal chest tube drain (ICD) insertion.