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It has been studied mostly in post surgical patients there is an intuitive assumption that increasing movement and sweating during second stage of labor can contribute to catheter dislodgement in obstetric population; our study was not designed to look at this question, however our data did not suggest an increased overall incidence of migration in this population group; magnitude of problem was comparable to surgical patients.
Several authors have indicated that the machines involved in venous needle dislodgements were tested after the incidents, only to find that the alarms were functioning and responded correctly within the default alarm limits (Sandroni, 2005; Sandroni, et al.
We also protocolised our sedation policy during this period as we felt this would help prevent dislodgements due to restlessness and agitation.
Encounters with drift algae were the most frequent, and slugs were observed crawling around or overtop of algae, which appeared to promote dislodgement.
If the branch is very large and possible dislodgement is a concern, a lead with a curled or sigmoid shape may be chosen.