Cutaneous Sensory Block Area of the Laparoscopic Assisted Transversus Abdominis Plane Block

The goal of this observational study is to assess the size and location of cutaneous sensory block area after dual laparoscopic assisted transverse abdominis plane block (L-TAP) with ropivacaine in patients undergoing laparoscopic cholecystectomy.

L-TAP is applied as a medial subcostal infiltration between midclavicular and central sternal lines and a lateral subcostal infiltration between midclavicular and anterior axillary line bilaterally.

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Key information

Conditions

Cholecystolithiasis Biliary Tract Diseases Cholelithiasis Digestive System Diseases Gallbladder Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Copenhagen University Hospital - North Zealand

Hillerød, 3400, Denmark

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

undergoing elective laparoscopic cholecystectomy in a day surgery setting
able to give oral and written consent

Exclusion criteria

prior surgery to the upper abdominal wall
known sensory deficits of the abdominal wall or thorax
allergy to local anesthetics
pregnancy

Treatment and study plan

Primary outcomes

Cutaneous Sensory Block Area (CSBA)

Time frame: 1.5 hours postoperatively

Assessment of the CSBA was done within the duration of the cutaneous sensory effect of the laparoscopic transverse abdominis plane block. A gauze dipped in alcohol was tapped on the skin of the abdominal wall from the midsagittal line using a star-shaped approach with its center at the umbilicus to indicate cutaneous sensory changes in cold perception. Changes were marked on the skin, confirmed twice, and a connecting line drawn to determine the CSBA. The was size of the CSBA was calculated, and the location (supraumbilical or infraumbilical and medially or laterally to a vertical line through the anterior superior iliac spine.

Sponsors and collaborators

Lead sponsor

Nordsjaellands Hospital

Other

Registry information

Official study title

Cutaneous Sensory Block Area of the Laparoscopic Assisted Transversus Abdominis Plane

Important dates

Study start: 2022
Primary completion: 2022
Study completion: 2022
First posted: Apr 25, 2023
Registry last updated: Aug 22, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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Completed