Surgical pain is a common complication after surgery, affecting patient recovery and treatment quality. \>20% of patients suffer from chronic postoperative pain. China has \>70 million surgeries yearly. Nerve block manages postoperative pain, with developing nerve block needles now used in clinics. Developed needles may have better pain management effects than non-developed ones, but their effect on reducing chronic pain remains unclear. This study aims to explore the effect of developed nerve block needles on postoperative pain and compare them to non-developed needles, providing new ideas and methods for pain management.
The age is above 18 years old and below 70 years old.
patients whose surgical sites were in the chest, abdomen, upper limbs or lower limbs, including lobectomy, cholecystectomy, gastrointestinal resection, hysterectomy and other elective operations.
This operation was the first operation during the hospitalization.
Consent to participate in this study and sign an informed consent form.
Patients with a history of alcohol or drug addiction.
Patients with disturbance of consciousness before operation.
Other conditions considered by the attending physician or researcher to be inappropriate for the study;
History of chronic pain.
Parallel
Echogenic nerve block needle
Procedure/SurgeryA 22G 8-cm echogenic nerve block needle (LEAPMED, CHINA) is selected for the procedure, administered under ultrasound guidance. Subsequently, a volume of 20 ml 0.375% ropivacaine is injected at the needle's tip for analgesic effect. The spread of the medication will be assessed through short- and long-axis imaging perspectives. Following this, evaluations are conducted to assess acute postoperative pain as well as chronic postoperative pain. Parameters such as the duration of nerve blockade, the incidence of punctures, and any associated complications are all meticulously appraised.
Non-echogenic nerve block needle
Procedure/SurgeryA 22G 8-cm thin wall low bottom nerve block needle (KDL, CHINA) is selected for the procedure, administered under ultrasound guidance. Subsequently, a volume of 20 ml 0.375% ropivacaine is injected at the needle's tip for analgesic effect. The distribution of the medication will be assessed using short- and long-axis imaging perspectives. Following this, evaluations are conducted to assess acute postoperative pain as well as chronic postoperative pain. Parameters such as the duration of nerve blockade, the number of punctures, and any associated complications are all meticulously appraised.
Chronic postoperative pain
Incidence of Chronic pain assessment from 3 months after surgery
Moderate to severe pain
Pain intensity (assessed by number rating scale, 0 represents no pain, 10 represents intolerable pain) more than 4
Acute postoperative pain
Pain intensity (assessed by number rating scale, 0 represents no pain, 10 represents intolerable pain) more than 4
Acute postoperative pain
Pain intensity (assessed by number rating scale, 0 represents no pain, 10 represents intolerable pain) more than 4
Acute postoperative pain
Pain intensity (assessed by number rating scale, 0 represents no pain, 10 represents intolerable pain) more than 4
Puncture operation time
Time from needle insertion to needle extraction
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