Effect of Transversus Abdominis Plane Block With Compound Lidocaine on Pain After Gynecological Surgery

Postoperative Pain Clinical Trial

Official title:

Effect of Ultrasound-guided Transversus Abdominis Plane Block With Compound Lidocaine on Postoperative Pain in Patients Undergoing Gynecological Laparotomy：a Randomized Double-blind Controlled Trial

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04938882
• Other study ID #: GWang013
• Status: Completed
• Phase: N/A
• Start date: August 15, 2021
• Est. completion date: February 14, 2022

Study information

• Verified date: February 2022
• Source: Tianjin Medical University General Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Purpose:

To explore effects of ultrasound-guided transversus abdominis plane block with compound lidocaine on postoperative pain after gynecological laparotomy.

Description:

Poor post-surgical pain control is a leading factor that hinders the physical rehabilitation, and causes acute cognitive impairment and chronic pain syndrome. Recently, the multimodal analgesia strategies to minimise opioid-related side effects are highly desirable in open surgical procedures. The transversus abdominis plane block is a novel technique involving injection of local anaesthetic between the internal oblique and the transversus abdominis muscles of the abdominal wall. Although ropivacaine is most commonly used for this technique, the analgesic duration remains not dissatisfied. Compared with ropivacaine, compound lidocaine injection has a better and longer analgesic activity since it contains menthol and ethanol with appropriate concentrations. However, whether compound lidocaine injection is efficiency in the transversus abdominis plane block for abdominal open sugery lacks investigations. Herein, we will evaluate the efficacy of ultrasound-guided transversus abdominis plane (USG-TAP) block with compound lidocaine injection for postoperative analgesia in patients undergoing gynecological laparotomy.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 164
• Est. completion date: February 14, 2022
• Est. primary completion date: February 10, 2022
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 20 Years to 60 Years

Eligibility

Inclusion Criteria:

1. Subject is scheduled to undergo gynecological laparotomy under general anesthesia

2. Subject's American Society of Anesthesiologists physical status is I-II.

3. The subject's parent/legally authorized guardian has given written informed consent to participate.

Exclusion Criteria:

1. Subject has a diagnosis of bronchial asthma, coronary heart disease, severe hypertension, renal failure or liver failure.

2. Subject has a diagnosis of Insulin dependent diabetes.

3. Subject is allergy and contraindication to local anesthetics or any components of local anesthetics.

4. Subject has a history of chronic pain, a history of alcohol or opioid abuse, pre- existing therapy with opioids, intake of any analgesic drug within 48 hours before surgery.

5. Subject has any contraindication for the use of patient-controlled analgesia (PCA).

6. Subject is pregnant or breast-feeding.

7. Subject is obese (body mass index >30kg/m^2).

8. Subject is incapacity to comprehend pain assessment and cognitive assessment.

Related Conditions & MeSH terms

• Pain, Postoperative
• Postoperative Pain

Intervention

Drug:
• Normal saline
Before the induction of anesthesia, normal saline is used for bilateral transversus abdominis plane block in a volume of 20 mL of each side
• Ropivacaine
Before the induction of anesthesia, 0.375% ropivacaine is used for bilateral transversus abdominis plane block in a volume of 20 mL of each side
• Compound lidocaine at low concentration
Before the induction of anesthesia, 0.4% compound lidocaine is used for bilateral transversus abdominis plane block in a volume of 20 mL of each side
• Compound lidocaine at high concentration
Before the induction of anesthesia, 0.6% compound lidocaine is used for bilateral transversus abdominis plane block in a volume of 20 mL of each side

Locations

Country	Name	City	State
China	Tianjin Medical University General Hospital	Tianjin

Sponsors (1)

Lead Sponsor	Collaborator
Tianjin Medical University General Hospital

Country where clinical trial is conducted

China, 

References & Publications (2)

Ma N, Duncan JK, Scarfe AJ, Schuhmann S, Cameron AL. Clinical safety and effectiveness of transversus abdominis plane (TAP) block in post-operative analgesia: a systematic review and meta-analysis. J Anesth. 2017 Jun;31(3):432-452. doi: 10.1007/s00540-017-2323-5. Epub 2017 Mar 7. Review. — View Citation

Tran DQ, Bravo D, Leurcharusmee P, Neal JM. Transversus Abdominis Plane Block: A Narrative Review. Anesthesiology. 2019 Nov;131(5):1166-1190. doi: 10.1097/ALN.0000000000002842. Review. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Pain Score (NRS)	The pain score at rest or after movement was evaluated by pain 11-point numerical rating scale (NRS): 0 = no pain, 10 = greatest imaginable pain.	72 hours after surgery
Secondary	Time of First Postoperative Analgesic Requirement	First postoperative pain (NRS=5) is initially controlled by titration of sufentanyl.	1 hour after surgery
Secondary	Total Dose of First Postoperative Analgesic Requirement	First postoperative pain (NRS=5) is initially controlled by titration of sufentanyl.	1 hour after surgery
Secondary	Cumulative Sufentanyl Consumption	Each patient was administered analgesics using a PCA (Patient-controlled analgesia) pump containing sufentanil (200µg) in normal saline at a total volume of 200 ml after leaving PACU (Postanesthesia care unit). This device was set to deliver a basal infusion of 2 ml/h and bolus doses of 0.5 ml with a 15-min lockout period. Sufentanyl cumulative consumption is recorded 72 hours postoperatively	72 hours after surgery
Secondary	Occurrence of Side Effects	Occurrence of side effects: nausea, vomiting, dizziness, headache, shivering, pruritus	72 hours after surgery
Secondary	Normalized Area of Hyperalgesia Around the Incision	The skin around the incision is stimulated in steps of 5 mm at intervals of 1 s starting outside of the hyperalgesic area in the direction of the incision. The distance from the incision to the first point where a 'painful', 'sore' or 'sharper' feeling occurred is measured and noted. This measurement is repeated at predefined radial lines around the incision. To eliminate the variable length of incision, this length is subtracted from the longer diameter leaving four radial distances from the end and from the middle of the incision. The normalized area of hyperalgesia is calculated by summing up the areas of the remaining four triangles measured by and Von Frey filament.	72 hours after surgery
Secondary	The onset time of sensory block	Sensory block was assessed using a cold test (2 = normal sensation, 1 = decreased cold sensation compared, 0 = loss of cold sensation) on the bilateral anterior abdomen between the median line and linea semiluminaris from T7-T12. The sensation was compared with the sensation to cold at ipsilateral lateral thoracic region of T4-T5.	30 minutes after transversus abdominis plane block
Secondary	Diffusion area of local anesthetics after transversus abdominis plane block	Diffusion area of local anesthetics after transversus abdominis plane block was calculated under ultrasound assistance .	30 minutes after transversus abdominis plane block
Secondary	Apfel score	The Apfel score was recorded for evaluating risk for developing postoperative nausea and vomiting (PONV).	The day before the surgery
Secondary	Mean time until passage of flatus	Gastrointestinal motility was evaluated by recording mean time until passage of flatus	72 hours after surgery