Framework of coronary and renal angina Framework of coronary and renal angina. £Cardiac output monitoring is currently the most precise form of intravascular volume status assessment; therefore, volume status is not listed separately. Framework of coronary and renal angina. £Cardiac output monitoring is currently the most precise form of intravascular volume status assessment; therefore, volume status is not listed separately. Stuart L. Goldstein, and Lakhmir S. Chawla CJASN 2010;5:943-949 ©2010 by American Society of Nephrology