Tap Block Anatomy

For the lateral tap block a linear transducer is placed in. The tap is a potential anatomical space between transversus abdominis and internal oblique or rectus abdominis and the field block by tap infiltration is referred to as a tap block.

Tap Block

The transversus abdominis plane tap block is a relatively new regional anesthesia technique that provides analgesia to the parietal peritoneum as well as the skin and muscles of the anterior abdominal wall.

Tap block anatomy. Block technique the aim of a tap block is to deposit local anaesthetic in the plane between the internal oblique and transversus abdominis muscles targeting the spinal nerves in this plane. The point of entry is the lumbar triangle of petit. It has a high margin of safety and is technically simple to perform especially under ultrasound guidance.

A needle is inserted perpendicular to all planes looking for a tactile endpoint of two pops. The transversus abdominis plane tap block was first described as a landmark guided technique involving needle insertion at the triangle of petit. 12 this is an area bounded by the latissimus dorsi muscle posteriorly the external oblique muscle anteriorly and the iliac crest inferiorly the base of the triangle.

A linear transducer is placed medial to the anterior superior iliac spine. There are several different approaches for ultrasound guided tap block such as lateral posterior and subcostal approaches. The anterior rami of spinal nerves t7 l1 innervate.

Traditionally the posterior tap block is performed at the triangle of petit. The goal of the tap block is to inject local anesthetic in. Transversus abdominis plane tap block is a technique of peripheral nerve block for abdominal anterior wall and in past years several authors demonstrated its efficacy and role in multimodal analgesia for various surgeries.

The tap block involves blocking the abdominal walls sensory innervation which arises from the anterior division of the thoracolumbar spinal nerves. Anatomy innervation of the abdominal wall. Scanning and block techniques subcostal tap block.

The innervation to abdominal skin muscles and parietal peritoneum will be interrupted. These sensory nerves are in the plane between the internal oblique and transverse abdominis muscles. It was first described in 2001 by rafi as a traditional blind landmark technique using the lumbar triangle of petit see the image below.

The transverse abdominis plane tap block is a peripheral nerve block designed to anesthetize the nerves supplying the anterior abdominal wall t6 to l1. A linear transducer is placed alongside the lower margin.

Tap Block In Clinical Practice