Regional anesthesia and pain medicine
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Ultrasonography of the lumbar spine provides information to facilitate the placement of neuraxial anesthesia. Likewise, thoracic spine ultrasound (US) might conceivably improve the quality and safety of thoracic epidural anesthesia. The objective of this study was to advance our understanding in this area by providing a detailed description of the sonoanatomy of the thoracic spine. ⋯ Ultrasound imaging of the thoracic spine in the PSO plane provides better views of the Lf-Dm compared with the TM plane. A upper incidence of inconclusive sonograms should be expected in the upper thoracic segments, which can be attributed to the narrower acoustic windows at these levels.
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Reg Anesth Pain Med · May 2012
The creation of an objective assessment tool for ultrasound-guided regional anesthesia using the Delphi method.
The assessment of technical skills in ultrasound-guided regional anesthesia is currently subjective and relies largely on observations of the trainer. The objective of this study was to develop a checklist to assess training progress and to detect training gaps in ultrasound-guided regional anesthesia using the Delphi method. ⋯ Using the Delphi method, a checklist and GRS were developed. These tools can serve as an objective means of assessing progress in ultrasound technical skills acquisition.
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Reg Anesth Pain Med · May 2012
Incidence and effects of unintentional intraneural injection during ultrasound-guided subgluteal sciatic nerve block.
The present study was conducted to determine the incidence of unintentional intraneural injection during ultrasound-guided subgluteal sciatic nerve block using a low-frequency transducer. We also observed the effects of intraneural injection using ropivacaine and mepivacaine. ⋯ Unintentional intraneural injection occurred at an incidence rate of 16.3% for the ultrasound-guided subgluteal approach to the sciatic nerve. Intraneural injection of mepivacaine or ropivacaine hastened the onset of blockade but did not affect block duration, and it did not result in clinical neural injury in our small sample of patients.
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Reg Anesth Pain Med · May 2012
Ultrasound-guided regional anesthesia: how much practice do novices require before achieving competency in ultrasound needle visualization using a cadaver model.
Ultrasound needle visualization is a fundamental skill required for competency in ultrasound-guided regional anesthesia. The primary objective of this study using a cadaver model was to quantify the number of procedures that novices need to perform before competency, using a predefined dynamic scoring system was achieved in ultrasound needle visualization skills. ⋯ Trainees became competent in ultrasound needle visualization at a variable rate. This study estimates that novices would require approximately 28 supervised trials with feedback before competency in ultrasound needle visualization is achieved.