Effect of Ultrasound-guided Transversus Abdominis Plane Block After Laparoscopic Bariatric Surgery

Tianjin Medical University

Status: Unknown

Conditions: Postoperative Pain; Postoperative Nausea and Vomiting

Treatments: Drug: Ropivacaine at high concentration; Drug: Normal saline; Drug: Ropivacaine and dexamethasone

Study type: Interventional

Funder types: Other

Identifiers

NCT05286008

GWang022

Details and patient eligibility

About

To explore and compare Ultrasound-Guided Transversus Abdominis Plane Block on Postoperative nausea and vomiting and Early Outcome After Laparoscopic Bariatric Surgery To evaluate and examine TAPB can reduce the application of intraoperative and postoperative opioids and the duration of analgesia

Full description

Poor postoperative nausea and vomiting 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. Herein, investigators will evaluate the efficacy of ultrasound-guided transversus abdominis plane(USG- TAP) block with ropivacaine in Laparoscopic Bariatric Surgery.

Enrollment: 90 estimated patients

Sex: All

Ages: 20 to 60 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Subject is scheduled to undergo Laparoscopic Bariatric Surgery
2. Subject's American Society of Anesthesiologists physical status is I-III.
3. BMI>35kg/m2
4. The subject's parent/legally authorized guardian has given written informed consent to participate

Exclusion criteria

1. Subject has a diagnosis of renal or liver failure.
2. Subject has a diagnosis of mental illness
3. Subject is allergy and contraindication to Ropivacaine.
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
6. Subject is pregnant or breast-feeding.

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

---

90 participants in 3 patient groups, including a placebo group

Normal Saline

Placebo Comparator group

Description:

Before the induction of anesthesia, normal saline is used for bilateral transversus abdominis plane block in a volume of 20 mL of each side.

Treatment:

Drug: Normal saline

Ropivacaine at high concentration

Experimental group

Description:

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

Treatment:

Drug: Ropivacaine at high concentration

Ropivacaine and dexamethasone

Experimental group

Description:

Before the induction of anesthesia, 0.375% Ropivacaine and 5.0mg dexamethasone are used for bilateral transversus abdominis plane block in a volume of 20 mL of each side

Treatment:

Drug: Ropivacaine and dexamethasone