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J Neurointerv Surg. 2012 May;4(3):e8. doi: 10.1136/neurintsurg-2011-010060. Epub 2011 Jun 27.

Undulating microcatheter tip motion with respiratory cycle during intracranial aneurysm embolization: description of a case and strategy for its mitigation.

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Division of Interventional Neuroradiology, Russell H Morgan Department of Radiology, Johns Hopkins Hospital, Baltimore, Maryland 21287, USA.


The present report describes a technique for mitigating respiration-related microcatheter motion during endovascular aneurysm treatment by modulating ventilator settings. A rare phenomenon of microcatheter tip movement related to respiration is demonstrated. An adjustment of tidal volume and respiratory rate reduced the degree of inspiratory vessel elongation and stabilized the microcatheter position, allowing for safer, more precise coil deployment. This maneuver can easily be applied to other endovascular procedures for which aberrant microcatheter motion must be minimized.

[Indexed for MEDLINE]

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