Hemodynamic Principles Flashcards
True or False?
The dicrotic notch indicates the location of the arterial mean pressure.
True
What valvular event is most closely associated with the dicrotic notch on the PA pressure tracing?
closure of the pulmonic valve
Where is mean pressure is measured.
PCW
AO
PA
femoral artery
What is the equation for MAP?
1 systolic + 2 diastolic
________________
3
How would you calculate pulse pressure?
PP = systolic - diastolic
Left ventricular end diastolic pressure (LV-EDP) readings are normally the same as what other pressure?
Pulmonary capillary Wedge pressure
What does the C wave represent and where can it be found?
In a pulmonary capillary wedge
closure of the pulmonic valve
When is the PC wedge pressure measured during respiration?
end inspiration
Under normal conditions PCW pressures should approximate what three other pressures?
- LA mean
- LV edp
- PA diastolic
True or False?
PA pressures vary with the respiratory cycle.
True
True or False?
Normally the RA mean is less than the RVedp
False
True or False?
In atrial fibrillation there are no a-waves in the RA tracing.
True
True or False?
An RV to RA pullback across a normal tricuspid valve should show no diastolic gradiant.
false
What pressures are needed to assess tricuspid stenosis?
RA and RV
What is the proper scale for an RA waveform?
40
True or False?
Normally the PA mean equals the RVedp.
True
Absence of an a-wave in the RA waveform is consistent with which rhythm?
atrial fibrillation
True or False?
The lowest pressue of all right heart waveforms is the x descent of the RA. It should be zero.
False
The diffence between PA systolic and PA diastolic is equal to what?
Pulse Pressure
Which pressure is normally the lowest?
RV early diastole
What hemodynamic measurement is identified with right heart preload?
RV edp
What is the normal pressure for the right ventricle?
25/5
What normal positive atrial pressure wave immediately follows QRS complex and closure of the AV valves?
c wave
