Anaes Vivas · Ultrasound-guided peripheral nerve blocks
Data viva — interpreting the ultrasound image during a nerve block
A data viva on interpreting the US image — identifying the nerve (honeycomb), the vessels (anechoic, compressible, pulsatile), the needle (echogenic line), and the spread (hypoechoic, U-shaped around the nerve).
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ANZCAFRCAABAEDAIC
Prompt
An ultrasound short-axis view of the popliteal fossa showing the sciatic nerve dividing into the tibial and common peroneal nerves, adjacent to the popliteal artery and vein.
Stimulus
An ultrasound short-axis image of the popliteal fossa. The sciatic nerve is seen dividing into the tibial (the larger, medial) and the common peroneal (the smaller, lateral) branches, lying superficial and lateral to the popliteal artery (pulsatile) and vein (compressible). Describe the interpretation and the injection technique.
References2ShowHide
- [2]Wang ZX, et al. Efficacy of ultrasound and nerve stimulation guidance in peripheral nerve block: A systematic review and meta-analysis. IUBMB Life, 2017.PMID 28714206
- [28714207]Bersten AD, Soni N (eds) Oh's Intensive Care Manual. 8th edition, Elsevier, 2018.