The aim of this clinical trial is to investigate the effects of local anesthetic diffusion range and sensory block range during retro-SCTLB(retro superior costotransverse ligament space block) and TPVB(thoracic paravertebral block) in patients undergoing CT-guided lung nodule localization. The main issue of the study is to determine the differences in the diffusion range and sensory block range of local anesthetics between the retro-SCTLB and TPVB nerve block methods.
aged 18-80 years
BMI 18-30 kg/m²
ASA classification I-III
Allergy to the study drug or local anesthetic;
History of opioid abuse;
Pre-existing skin infection at the puncture site of ITPN or TPVB;
Peripheral infectious neuropathy;
Parallel
Ultrasound-guided retro-SCTLB
Procedure/SurgeryPatients undergoing CT-guided lung nodule localization were selected for the study. Before the surgery, the retro-SCTLB was performed under ultrasound guidance.
Ultrasound-guided TPVB
Procedure/SurgeryPatients undergoing CT-guided lung nodule localization were selected for the study. Before the surgery, the TPVB was performed under ultrasound guidance.
Spread of local anesthetic into the paravertebral space
Observation of incidence and thoracic level of local anesthetic spread into the paravertebral space with CT by a researcher who was blinded to group allocation
The range of the local anesthetic spreads to the intercostal space
Observation of incidence and thoracic level of local anesthetic spread into the intercostal space with CT by a researcher who was blinded to group allocation
Observation of local anesthetic spread cephalocaudally in the erector spinae plane
Observation of incidence and thoracic level of local anesthetic spread into the erector spinae plane cephalocaudally with CT by a researcher who was blinded to group allocation.
The range of the local anesthetic spread to the epidural space
Observation of incidence and thoracic level of local anesthetic spread into the epidural space with CT by a researcher who was blinded to group allocation
The range of the local anesthetic spread to the anterolateral vertebrae (sympathetic ganglion).
Observation of incidence and thoracic level of local anesthetic spread into the anterolateral vertebrae (sympathetic ganglion) with CT by a researcher who was blinded to group allocation
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