Monitoring
Monitoring 2
NIBP
Under read high BP
Over read low BP
cuff size
IABP
Continuous monitoring
Blood Sampling
More accurate
Sources of IABP Error
Complications of IABP
Usefulness of BP Values
CVP measurement
Not routinely measured anymore
Surrogate of RA pressure (pre load)
Change in CVP measured with 5 min after fluid bolus
0-3 preload low
3-5 preload normal
5-7 preload high
Complications of CVC
Pulse Pressure Variation
Irregular cardiac rhythm influences stroke volume and pulse pressure
Passive leg raise
Increase pulse pressure >10% likely fluid responsive
250-500mL from the legs
Caveat: patient must have 2 legs