Figure 4
Ultrasound image of a failed block. Note that the needle tip is above the prevertebral fascia (pink dotted line). A small amount of anechoic anesthetic can be noted deposited above this important sonographic landmark.
Figure 4
Ultrasound image of a failed block. Note that the needle tip is above the prevertebral fascia (pink dotted line). A small amount of anechoic anesthetic can be noted deposited above this important sonographic landmark.
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