• Cardiac blood pressures (measured via Swan-Ganz catheterization)
  • Right atrium: < 5 mm Hg
  • Right ventricle (pulmonary artery pressure): 25/5 mm Hg
    • During systole, pressures in the right ventricle are much lower than in the left ventricle (only ~25 mm Hg compared to ~120 mm Hg). As a result, coronary perfusion pressure is able to overcome right ventricular wall pressure throughout the cardiac cycle, leading to relatively constant blood flow to the right ventricular myocardium.
  • Left atrium (pulmonary capillary wedge pressure): < 12 mm Hg (higher than left ventricular pressure in mitral stenosis)
  • Left ventricle: 130/10 mm Hg
  • Coronary perfusion pressure
    • The driving pressure that forces blood into the coronary arteries during diastole
    • Calculated as the difference in pressure between the aorta and left ventricle during diastole