Education  |   February 2018
Infraclavicular Neurovascular Anatomic Anomaly Seen via Ultrasound
Author Notes
  • From the Department of Anesthesiology, University of California San Diego, San Diego, California.
  • Charles D. Collard, M.D., served as Handling Editor for this article.
    Charles D. Collard, M.D., served as Handling Editor for this article.×
  • Address correspondence to Dr. Chandrabose: rkchandrabose@ucsd.edu
Article Information
Education / Images in Anesthesiology / Radiological and Other Imaging
Education   |   February 2018
Infraclavicular Neurovascular Anatomic Anomaly Seen via Ultrasound
Anesthesiology 2 2018, Vol.128, 389. doi:10.1097/ALN.0000000000001896
Anesthesiology 2 2018, Vol.128, 389. doi:10.1097/ALN.0000000000001896
ULTRASOUND-GUIDED infraclavicular nerve blocks provide anesthesia and analgesia for procedures of the elbow, forearm, and hand.1  The included image (left) is of an unusual anatomic variant discovered during scouting scan for an infraclavicular nerve block. (Normal anatomy is shown on the right.2 )
This image and the associated drawing show the benefits of a full scouting scan, because significant anatomic variants can otherwise be missed. In our patient, the axillary vein spirals 360°, moving posteriorly and cephalad to the artery and then turning and moving anteriorly and caudad, bringing it back to a normal anatomic path. In addition, both the axillary artery and vein split into two branches in their lateral courses.
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