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An observational study of factors leading to difficulty in resident anaesthesiologists identifying the epidural space in obstetric patients

Abstract Background Multiple attempts at needle placement for neuraxial block may cause patient discomfort, a higher incidence of spinal haematomas, postdural puncture headache and nerve trauma. The aim of this study was to evaluate the factors predicting difficult epidural analgesia for inexperienc...

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Published in:International journal of obstetric anesthesia 2011-04, Vol.20 (2), p.124-127
Main Authors: Faitot, V, Ourchane, R, Dahmani, S, Magheru, M, Nebout, S, Gomas, F, Katz, A, Salomon, L, Keïta-Meyer, H
Format: Article
Language:English
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Summary:Abstract Background Multiple attempts at needle placement for neuraxial block may cause patient discomfort, a higher incidence of spinal haematomas, postdural puncture headache and nerve trauma. The aim of this study was to evaluate the factors predicting difficult epidural analgesia for inexperienced residents. Methods In this prospective observational study, conducted in a teaching hospital, four anaesthesiology residents without prior experience in obstetric anaesthesia performed all epidural procedures. A difficult epidural was defined as a need for more than one attempt at catheter placement. The following patient data were recorded: body mass index, abdominal circumference (classified as 30 kg/m2 , an abdominal circumference >105 cm, inability to palpate spinous processes and spinal abnormality. With the exception of abdominal circumference, all factors were independently predictive of difficult placement in the multivariate analysis with spinal abnormality being the most significant factor. Conclusions For residents with no prior experience in obstetric anaesthesia, the most reliable factor in predicting difficult epidural cannulation was spinal abnormality.
ISSN:0959-289X
1532-3374
DOI:10.1016/j.ijoa.2010.11.008