Right Heart Catheterization Cheat Sheet: Interpretation ...
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Right Heart Catheterization Cheat Sheet: Interpretation of Pressures and Waveforms 

Direct measurements

 ● Central venous pressure (CVP)

 ● Right-sided intracardiac pressures (RA, RV)

 ● Pulmonary arterial pressure (PAp)

 ● Pulmonary capillary wedge pressure (PCWP)

 ● Cardiac output (CO)

 ● Mixed venous oxyhemoglobin saturation (SvO2)

Indirect measurements

 ● Systemic vascular resistance (770-1500 d/s/cm5) (SVR = 80 x [mean artery pressure – CVP]/CO)

 ● Pulmonary vascular resistance (20-120 d/s/cm5) (PVR = 80 x [mean PAp – PCWP]/CO)

 ● Cardiac index (2.5-4 L/min/m2) (CI = CO/body surface area)

 ● Stroke volume index (33-47 ml/beats/m2) (SVI = CI/heart rate)

 ● Left ventricular stroke work index (LVSWI = [MAP – PCWP] x SVI x 0.136)

 ● Right ventricular stroke work index (RVSWI = [mean PAp – CVP] x SVI x 0.136)

 ● Oxygen delivery (DO2 = CI x 13.4 x Hb x SaO2)

 ● Oxygen uptake (VO2 = CI x 13.4 x Hb conc x [SaO2 – SvO2])

RA pressures and waveforms

 ● a wave:contraction in atrial systole 

 ● x descent: fall in RA pressure (atrial diastole)

 ● c wave: closure of the tricuspid valve.

 ● v wave: ventricular systole + passive atrial filling in atrial diastole.

 ● y descent: fall in RA pressure following opening of the TV + passive filling of RV



Usama Nasir MD @usamanasirmd - Visualmed



#RHC #Interpretation #Diagnosis #RightHeartCatheterization #CheatSheet #Waveforms #Cardiology
Contributed by

Dr. Gerald Diaz
@GeraldMD
Board Certified Internal Medicine Hospitalist, GrepMed Editor in Chief 🇵🇭 🇺🇸 - Sign up for an account to like, bookmark and upload images to contribute to our community platform. Follow us on IG:  https://www.instagram.com/grepmed/ | Twitter: https://twitter.com/grepmeded/
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