PubMed · 7624077
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J O'Donnell. 1995. Avoiding vasopressor extravasation.. https://pubmed.ncbi.nlm.nih.gov/7624077/
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A procedure is proposed for the complete removal of an overextended root canal filling when associated with a root canal treatment failure. First, the gutta-percha is softened with xylene and removed to a distance of 2 to 3 mm short of the apex. Second, the remaining gutta-percha, which is preserved as solid as possible, is removed by a Hedstrom file. The file is extended 0.5 to 1.0 mm beyond the apex, firmly engages the gutta-percha and is slowly removed. In 17 of the 18 cases, this procedure successfully removed the overextended gutta-percha.
A term baby with neonatal convulsions secondary to birth asphyxia was given i.v. phenytoin via a cannula in the dorsum of the hand at 17 h of age. She developed a blue discolouration in the tissues surrounding the i.v. site. The infusion was aborted but the discolouration gradually spread to the rest of the hand. Twenty hours later, improvement could be detected although a blister appeared near the i.v. site. A further attempt two days later to administer phenytoin via an i.v. cannula sited in the left foot was aborted after the appearance of a similar reaction.
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