DR BARRY SLAVEN / SCIENCE PHOTO LIBRARY DR BARRY SLAVEN / SCIENCE PHOTO LIBRARY
Arterial catheterisation. Surgeon in an intensive care unit preparing to insert a catheter into a patient's radial artery using an Arrow catheter insertion set. An arterial catheter, or arterial line (art-line, a-line), is a thin catheter inserted into an artery so that blood pressure can be monitored directly. It can also be used to obtain samples for arterial blood gas analysis.
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