Eyes in the needle: novel epidural needle with embedded high-frequency ultrasound transducer--epidural access in porcine model.


BACKGROUND Epidural needle insertion is usually a blind technique where the rate of adverse events depends on the experience of the operator. A novel ultrasound method to guide epidural catheter insertion is described. METHODS An ultrasound transducer (40 MHz, a -6 dB fractional bandwidth of 50%) was placed into the hollow chamber of an 18-gauge Tuohy… (More)
DOI: 10.1097/ALN.0b013e31821b5746


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