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Patient Monitoring 23 November 2008 Elvin Cruz, MD, MS Med ETT Anesthesiologist Roizen: Essence of Anesthesia Practice Stoelting, Miller: Basics of Anesthesia Morgan, Mikhail: Anesthesiology Faust: Anesthesiology Review
20G catheter for radial artery in adults, 22G in pediatrics
Secure with suture and/or clear tape or dressing
Transducer line with pressure tubing attached to IV fluids on a pressure bag set at 250 mmHg. Transducer setup infuses a few ml of saline into artery every hour to prevent clotting. Non-pressure tubing will dampen signal.
Transducer is zeroed and positioned at the level of the heart
Site of placement of arterial line catheter determines the shape of the arterial pressure wave. The farthest from the heart, the higher the systolic pressure and the lower the diastolic pressure. MAP remains about the same at all sites
Upon removal of arterial catheter hold pressure at insertion site for 3-5 minutes to prevent bleeding/hematoma