How do you use a continuous ultrasound-guided popliteal block?
How do you use a continuous ultrasound-guided popliteal block?
CONTINUOUS ULTRASOUND-GUIDED POPLITEAL SCIATIC BLOCK. The catheter is inserted 4-5 cm beyond needle tip and its correct placement is documented by observing injection of LA within the sciatic nerve sheath. The catheter is secured either by taping it to the skin or tunneling.
What is a continuous popliteal sciatic nerve block?
The goal of the continuous popliteal sciatic nerve block is to place the catheter within the sciatic nerve sheath in the popliteal fossa (Figure 13). The catheter is inserted 4-5 cm beyond needle tip and its correct placement is documented by observing injection of LA within the sciatic nerve sheath.
How is the Vloka’s sheath identified in an ultrasound scan?
• Ultrasound imaging should specifically focus on identifying the sciatic nerve sheath (Vloka’s sheath) containing both components of the sciatic nerve (tibial and common peroneal nerves). Successful injection will deposit local anesthetic within the Vloka’s sheath
How do you optimize an ultrasound image for nerve blocks?
Certain basic tenets of optimizing an ultrasound image are applicable to all nerve blocks. For instance, sonography requires an understanding of mechanics and ergonomics. Novices are subject to errors such as probe fatigue, reversing probe orientation, and inadequate equipment preparation.
https://www.youtube.com/watch?v=gH1BS54EYjU
What equipment is used to treat a popliteal sciatic nerve block?
The equipment recommended for a popliteal sciatic nerve block includes the following: Ultrasound machine with a linear transducer (8–12 MHz), sterile sleeve, and gel A 20-mL syringe containing local anesthetic 50- to 100-mm, 21- to 22-gauge, short-bevel, insulated stimulating needle
What is the anatomy of the sciatic nerve in the popliteal fossa?
The anatomy of the sciatic nerve in the popliteal fossa is variable, and the division into the tibial nerve (TN) and common peroneal nerve (CPN) occurs at an inconstant distance from the popliteal crease ( Figure 1 ).
