Transversus Abdominis Plane (TAP) Block Laparoscopic Hysterectomy (TAP HYS)

The recruitment status of this study is unknown because the information has not been verified recently.
Verified February 2012 by Northwestern University.
Recruitment status was  Active, not recruiting
Information provided by (Responsible Party):
Gildasio De Oliveria, Northwestern University Identifier:
First received: February 22, 2010
Last updated: February 15, 2012
Last verified: February 2012

The use of pre-operative TAP block will reduce pain after laparoscopic vaginal hysterectomy and improve quality of recovery.

Condition Intervention
Postoperative Pain
Drug: placebo
Drug: Study Drug (0.5% ropivacaine ) injection
Procedure: TAP block
Drug: TAP block using 20 cc of 0.25% ropivacaine on each side

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Prevention
Official Title: The Effect of Pre-operative Transversus Abdominis Plane (TAP) Block in the Quality of Recovery of Patients Undergoing Laparoscopic Hysterectomy: a Prospective, Randomized, Blinded Study

Resource links provided by NLM:

Further study details as provided by Northwestern University:

Primary Outcome Measures:
  • QoR40 on the day after surgery [ Time Frame: 24 hours post operatively ] [ Designated as safety issue: No ]
    QoR40 on the day after surgery

Secondary Outcome Measures:
  • 24 total opioid consumption [ Time Frame: 24 hours ] [ Designated as safety issue: No ]
    Total 24 total opioid consumption post operativley

Enrollment: 75
Study Start Date: March 2010
Arms Assigned Interventions
Placebo Comparator: Placebo
Group B (control group) will receive sterile normal saline.
Drug: placebo
placebo injection
Procedure: TAP block
TAP block
Active Comparator: Study Drug
Group A (study group) will receive a bilateral TAP block using 20 cc of 0.5% ropivacaine on each side
Drug: Study Drug (0.5% ropivacaine ) injection
.5% ropivacaine 20 mls on each side of abdomen
Procedure: TAP block
TAP block
Active Comparator: TAP block using 20 cc of 0.25% ropivacaine on each side
Active Comparator 2. Subject Will receive a bilateral TAP block using 20 cc of 0.25% ropivacaine on each side
Drug: TAP block using 20 cc of 0.25% ropivacaine on each side
Will receive a bilateral TAP block using 20 cc of 0.25% ropivacaine on each side

Detailed Description:

The transversus abdominis plane (TAP) block involves the sensory nerve supply of the anterior -lateral abdominal wall where the T7-12 intercostal nerves, ilioinguinal, iliohypogastric and the lateral cutaneous branches of the dorsal rami of L1-3 are blocked with an injection of local anesthetic between the internal oblique abdominal muscle (IOAM) and the transverse abdominal muscle(TAM)(12).This technique allows sensory blockade of the anterolateral abdominal wall via local anesthetic deposition superficial to the transversus abdominis muscle. It was first described by McDonnell et al. as a landmark technique to provide analgesia for lower abdominal surgery (13).

Hebbart et al. subsequently described an ultrasound guided technique for the TAP block which they named posterior TAP block (14).The ultrasound allows identification of the external oblique abdominal muscles (EOAM) , IOAM and TAM. Previous studies about ultrasound -guided regional anesthetic techniques suggest improved block quality and safety, which is primarily due to direct visualization of the relevant anatomy, the tip of the needle, and the spread of the local anesthetics (15-19).

Clinical trials of the single shot posterior TAP block have shown a significant reduction in morphine consumption during the first 24-36 hours after surgery (20-23). More recently , El-dawlatly et al. demonstrated that ultrasound guided TAP block in patients undergoing laparoscopic cholecystectomy reduced perioperative opioid consumption by more than 50%(24).

This is the first study to evaluate the effect of TAP block in the quality of recovery in patients undergoing laparoscopic hysterectomy and may help the pathway to make this an outpatient procedure.


Ages Eligible for Study:   18 Years to 64 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Age: 18-64 years
  • Surgery: Laparoscopic Hysterectomy surgery
  • ASA status: I and II
  • Fluent in English

Exclusion Criteria:

  • History of allergy to local anesthetics
  • History of chronic opioid use
  • Pregnant patients
  • BMI greater than 30

Drop-out criteria:

  • Patient or surgeon request
  • Complications related to the procedure
  Contacts and Locations
Please refer to this study by its identifier: NCT01074229

United States, Illinois
Northwestern Memorial Hospital
Chicago, Illinois, United States, 60611
Sponsors and Collaborators
Northwestern University
Principal Investigator: Gildasio DeOliveira, MD Northwestern University
  More Information


Additional publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Gildasio De Oliveria, Gildasio De Oliveira, M.D. Principal Investigator, Northwestern University Identifier: NCT01074229     History of Changes
Other Study ID Numbers: STU00023440
Study First Received: February 22, 2010
Last Updated: February 15, 2012
Health Authority: United States: Institutional Review Board

Keywords provided by Northwestern University:
Post Operative

Additional relevant MeSH terms:
Pain, Postoperative
Postoperative Complications
Pathologic Processes
Signs and Symptoms
Anesthetics, Local
Central Nervous System Depressants
Physiological Effects of Drugs
Pharmacologic Actions
Sensory System Agents
Peripheral Nervous System Agents
Central Nervous System Agents
Therapeutic Uses processed this record on April 23, 2014