blood pressure monitoring Flashcards
MAP formula
(SBP + DBP + DBP) / 3 OR DBP+((SPB-DPB)/3)
noninvasive method uses
return to flow
automatic machines use ___ variation
oscillometric
should be able to get _ finger beneath the BP cuff
1
contraindications for A-line
compromised arterial supply, reynard’s, thromboangitis obliterans
complications of a-line
limb ischemia, infection, hematoma, broken arterial catheter, thrombosis, air emboli
area under the curve for A-line tracing is
MAP
what part of the arterial waveform represents diastole
after the dicrotic notch
the further you get from the aorta, the ___ the systolic peak
taller
the further you get from the aorta, the ___ the pulse pressure
wider
the further you get from the aorta, the __ end diastolic pressure
lower
distal systolic pulse amplification
the systolic peak is steeper the further down the arterial tree you travel because of reflected waves
BP cuff should be long enough to wrap around __ % of the extremity
80
the ideal bladder width is __% the circumference of the patient’s arm
40
in an underdampened system, SPB is ___ and DBP is ___
overestimated, underestimated
in an overdampened system, SBP is __ and DBP is ___
underestimated, overestimated
causes of overdamnpened
air bubble or clot in pressure tubing or low flush pressure bag
distance from subclavian to vc ra juntion
10
distance from r IJ to vc and ra junction
15
distance from left IJ to junctio
20
distance from fem to junction
40
ra catheter tip
0-10
rv catheter tip
10-15
pa catheter tip
15-30
