Ultrasound-guided “short” midline catheters for difficult ve
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Abstract

Background :
Acutely ill patients admitted to the emergency department (ED) constantly require at least one fast and reliable peripheral intravenous (PIV) access. In many conditions (morbid obesity, underweight state, chronic diseases, intravenous drug abuse, adverse local conditions, etc.), PIV placement may be challenging.

Ultrasound guidance is a useful tool for obtaining a peripheral intravenous access in the emergency department, particularly when superficial veins are difficult to identify by palpation and direct visualization, though standard peripheral intravenous cannulas are not ideal for this technique of insertion and may have limited duration.

Long polyurethane catheters inserted with ultrasound guidance and direct Seldinger technique appear to have several advantages over short cannulas in terms of success of insertion and of duration.......

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4742453/
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