Why the study?
Does air versus liquid as the medium for loss of resistance reduce complications during epidural block?
Does air versus liquid as the medium for loss of resistance reduce complications during epidural block?
Current evidence is insufficient to determine the optimal medium (air vs liquid) for loss of resistance during epidural block due to study heterogeneity and infrequent complications.
Neither medium can be endorsed for epidural loss of resistance; leaves open need for standardized trials.
Larger studies that overcome limitations of heterogeneity across studies and a relatively infrequent occurrence of complications are required to determine the optimal medium for loss of resistance during epidural block.
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Schier et al. (2009) studied this question.
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