Appendix 17–3. Recommendations for Intracoronary Physiologic Measurements (Doppler Ultrasound, FFR)
Class I
None
Class II a
Level of Evidence
1. Assessment of the physiologic effects of intermediate coronary stenosis (30 to 70 percent luminal narrowing) in patients with anginal symptoms. Coronary pressure or Doppler velocimetry may also be useful as an alternative to performing noninvasive functional testing (e.g., when the functional study is absent or ambiguous) to determine whether an intervention is warranted.
B
Class II b
1. Evaluation of the success of percutaneous coronary revascularization in restoring flow reserve and to predict the risk of restenosis
C
2. Evaluation of patients with anginal symptoms without an apparent angiographic culprit lesion
C
SOURCE: From Smith SC, Jr, Dove JT, Jacobs AK, et al. ACC/AHA guidelines for percutaneous coronary intervention: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Revise the 1993 Guidelines for Percutaneous Transluminal Coronary Angioplasty). J Am Coll Cardiol 2001;37:2239i–lxvi. With permission.
