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Changes of dorsalis pedis artery flow pattern after caudal block in children: observational study using a duplex sonography
Author(s) -
Hong JeongYeon,
Ahn Seohui,
Kil Hae K.
Publication year - 2011
Publication title -
pediatric anesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.704
H-Index - 82
eISSN - 1460-9592
pISSN - 1155-5645
DOI - 10.1111/j.1460-9592.2010.03483.x
Subject(s) - medicine , dorsalis pedis artery , hemodynamics , duplex ultrasonography , ropivacaine , anesthesia , vasodilation , blood flow , sevoflurane , peripheral , duplex scanning , anatomy , artery , ultrasonography , cardiology , surgery , stenosis
Summary Objective: To evaluate the changes of the flow velocity, the volume flow, and the diameter of dorsalis pedis artery using a duplex ultrasonography after caudal block with sevoflurane anesthesia in children. Aim: To know the acute change in peripheral arterial flow patterns of sympathetically blocked lower limbs in anesthetized children. Background: Caudal analgesia in combination with general anesthesia may affect the circulatory hemodynamics due to sympatholytic vasodilating effects. Methods: After approval by the Ethics Committee, we evaluated the changes of peripheral hemodynamics using a duplex ultrasonography before and after a caudal block in sevoflurane‐anesthetized children. Results: A caudal block using 0.15% ropivacaine 1.5 ml·kg −1 significantly altered the arterial flow patterns; increased peak velocity (24%) and volume flow (76%), and the diameter of the dorsalis pedis artery (20%) in children. However, blood pressures and heart rates were not affected significantly by caudal block. Conclusions: Duplex sonographic measurements indicate that a caudal block changes the flow patterns of the dorsalis pedis artery significantly in the anesthetized children.