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. 2018 Feb 27;10(8):784–787. doi: 10.1136/neurintsurg-2018-013769

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Boxplots of median door-to-puncture times for patients with radial arterial line (RAL) placement and use of the pressure-sensing sheath (PSS) (left) versus use of the PSS alone (right). Median time is indicated by the bold line, and first and third quartiles are indicated by the box. Whiskers indicate minima and maxima, with a single outlier in the RAL group indicated by an open circle. The median door-to-puncture time for patients with RAL was 58.5 and without RAL was 48.5.