As I review sepsis cases in patients with non-invasive pressure monitoring; I 
am finding that quite often the MAP does not correlate with the standard 
formula (S=2D/3); and I understand that non-invasive monitoring relies on pulse 
amplitude to calculate mean. Should we really be utilizing MAP with 
non-invasive pressure devices? To say we should re-check it manually can hardly 
be practical when many areas of the hospital use non-invasive devices for BP 
monitoring.

Tish Poserina, RN,MSN, CCRN, CNRN
Sepsis Coordinator
St Mary Medical Center

[email protected]<mailto:[email protected]>
W 215.710.4347
C 215.710.7644

1201 Langhorne-Newtown Road
Langhorne, Pa 19047

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