Value of right-sided cardiac catheterization in patients undergoing left-sided cardiac catheterization for evaluation of coronary artery disease.

The value of right-sided cardiac catheterization was assessed prospectively in 200 patients undergoing left-sided catheterization for evaluation of known or suspected coronary artery disease. Before catheterization, data from right-sided catheterization was not felt to be necessary for clinical management. There were 6 +/- 2 extra minutes of procedure time and 86 +/- 63 extra seconds of fluoroscopy time used. Abnormalities were detected in 69 (35%) patients. These findings were unexpected in 37 of these patients and in 3 patients, further evaluation was prompted. However, management was altered in only 3 (1.5%) patients as a result of data obtained by right-sided catheterization. In conclusion this additional procedure rarely adds clinically useful information about patients undergoing left-sided catheterization and angiography for coronary artery disease without a clinical indication for right-sided catheterization.