Which statement accurately describes diagnostic coronary angiography versus diagnostic left heart catheterization?

Which statement accurately describes diagnostic coronary angiography versus diagnostic left heart catheterization?

• A. They are mutually exclusive.
• B. Left heart catheterization visualizes coronary arteries; angiography measures LV pressures.
• C. Coronary angiography visualizes coronary arteries; left heart catheterization assesses LV pressures, LV function, and aortic root; both may be performed together.
• D. The two terms refer to the same procedure.

Answer: (C)

The key idea is distinguishing what each invasive test targets and how they relate in practice. Coronary angiography specifically visualizes the coronary arteries by injecting contrast and imaging their luminal anatomy to look for blockages or anomalies. Left heart catheterization, on the other hand, involves advancing a catheter into the left-sided heart and aorta to measure pressures (such as left ventricular and aortic pressures), assess left ventricular function (often with ventriculography), and evaluate the aortic root. In many cases these components are performed together in one diagnostic session, since the same arterial access can yield both coronary images and hemodynamic data. So the best description is that coronary angiography visualizes the arteries, left heart catheterization assesses LV pressures, LV function, and the aortic root, and both studies may be performed together. The other statements are incorrect because they misstate which part visualizes the coronaries, what is measured, or suggest the procedures are mutually exclusive or the same.

The key idea is distinguishing what each invasive test targets and how they relate in practice. Coronary angiography specifically visualizes the coronary arteries by injecting contrast and imaging their luminal anatomy to look for blockages or anomalies. Left heart catheterization, on the other hand, involves advancing a catheter into the left-sided heart and aorta to measure pressures (such as left ventricular and aortic pressures), assess left ventricular function (often with ventriculography), and evaluate the aortic root. In many cases these components are performed together in one diagnostic session, since the same arterial access can yield both coronary images and hemodynamic data.

So the best description is that coronary angiography visualizes the arteries, left heart catheterization assesses LV pressures, LV function, and the aortic root, and both studies may be performed together. The other statements are incorrect because they misstate which part visualizes the coronaries, what is measured, or suggest the procedures are mutually exclusive or the same.