Epidural volume extension: a review.
Epidural volume extension is a technical modification of the combined spinal epidural block. It involves the epidural injection of normal saline or a small volume of local anaesthetic after an intrathecal injection, aiming to augment the post-spinal sensory level. Although the consequent sensory block augmentation has been adequately documented, the probable factors influencing epidural volume extension and its implications for clinical practice are not well defined. This article reviews published literature relating to the probable factors affecting epidural volume extension, its clinical implications, case reports of its successful clinical application and summarises its unexplored effects.
Department of Anaesthesiology and Critical Care, University College of Medical Sciences and Guru Teg Bahadur Hospital, Shahadra, Delhi, India. drashatyagi@gmail.com
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A
Tyagi
C S
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Sharma
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Kumar
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DK
Sharma
A K
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Jain
A K
AK
Sethi
D000767:Anesthesia, Epidural / Q000379:methods*; D000775:Anesthesia, Spinal / Q000379:methods*; D006801:Humans