What do they mean?
Cardiac Output (CO)
HR x SV
Central Venous Pressure
Pressure in the superior vena cava or right atrium
CO
4-6 L/min
CVP
2-6 mmHg
Arterial Line
Sterile line placed for BP monitoring and ABGs
-Allen test performed before
-Correlate NIBP with arterial BP every shift, changing positions, equipment verification
Stroke Volume (SV)
Volume (mL) ejected with each beat from LV
Pulmonary Arterial Wedge Pressure
Estimates the pressure in the LA
SV
60-100 mL/beat
PAWP
6-12 mmHg
V-V ECMO
Oxygenation only
-longer therapy out of the two
Stroke Volume Variation (SVV)
Shows beat to beat change in SV
Preload
Stretch or Pour
Volume of blood in ventricles at end of diastole
SVV
10-15%
HR
60-100 bpm
V-A ECMO
Device that bypasses the heart and the lungs
-must not be pulsatile
Systemic Vascular Resistance (SVR)
The resistance the LV must overcome to eject blood
Afterload
Squeeze or Pressure
Resistance left ventricle must overcome to circulate blood
Ejection Fraction
60-70%
BP
120/80
Intra Aortic Balloon Pump
Balloon inserted into the aorta that inflates during diastole and deflates during systole
Blood Pressure
CO x SVR
Contractility
The squeeze ability of the heart
SVR
800-1200 dynes-sec/cm
MAP
65
PA Catheter (Swan Ganz)
Pressure measured by wedging a balloon of the Swan Ganz catheter directly into the PA branch
-Providers only perform