Hemodynamic monitors and equipment 2 Flashcards
What is the approximate distance from the vena cava/right atrial junction to the right atrium?
0-10 cm
What is the approximate distance from the vena cava/right atrial junction to the right venticle?
10-15 cm
What is the approximate distance from the vena cava/right atrial junction to the pulmonary artery?
15-30 cm
What is the approximate distance from the vena cava/right atrial junction to the PAOP position?
25-35 cm
The CVP waveform reflects
the pressure inside the right atrium
The CVP waveform has ____________ peaks and ______ troughs
three peaks (A, c, v) and two troughs (x, y)
The A wave is equivalent to the
RA contraction
The C wave is equivalent to the
tricuspid valve elevation into the RA
The X decent is equivalent to the
downward movement of the contracting RV
The V wave is equivalent to the
passive filling of the RA
The CVP waveform is a reflection of the
pressure inside the right atrium
What is the electrical event associated with the A wave of the CVP waveform?
just after P wave (atrial depolarization)
What is the electrical event associated with the C wave of the CVP waveform?
Just after QRS complex (ventricular depolarization)
What is the electrical event associated with the X descent of the CVP waveform?
ST segment
What is the electrical event associated with the V wave of the CVP waveform?
Just after T wave begins (ventricular depolarization)
What is the electrical event associated with the Y descent of the CVP waveform?
after T wave ends
Central venous pressure is:
a. falsely increased by placing the transducer above the zero point
b. increased by PEEP
c. decreased by pericardial tamponade
d. unchanged by a ventricular septal defect
b. increased by PEEP
The CVP should be zeroed at the
fourth ICS at the mid anteroposterior level (phlebostatic axis)