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peak technique By Stephen Michael Mullins, BSN, RN, GNC; Doreen Westburg, ASN, RN; and Charlotte Davis, BSN, RN, CCRN Mean arterial pressure (MAP) is a mea- traumatic brain injury or stroke to ensure surement of perfusion pressure in the that adequate cerebral perfusion pressure arteries during a single cardiac cycle is maintained. If the MAP is too low—less (see Calculating MAP). This pressure— than 65 mm Hg—the patient is at risk for generated by the heart during contrac- negative outcomes such as tissue and or- tion—forces blood through arteries to gan ischemia. When tissues and organs organs and vital tissues to support meta- don’t receive an adequate supply of bolic activity. Although a MAP numerical oxygen-rich blood, ischemia can occur fol- measurement is displayed on most health- lowed by rapid cell death and subsequent care facility’s noninvasive BP monitors, it’s potential organ failure. A recent research considered inaccurate because external study that evaluated over 33,000 patients factors such as movement can alter the re- indicated that a decreased MAP of less sults. Invasive arterial pressure monitoring than 55 mm Hg, even for short durations, is considered the most accurate way to increases the incidence of acute kidney in- measure
Nursing Made Incredibly Easy! – Wolters Kluwer Health
Published: Jul 1, 2014
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