Decision Making in Intermediate Coronary Lesion via DFR Guided Percutaneous Intervention

Abstract

Background: Physiologic assessment is widely utilized in clinical practice, particularly in the context of coronary artery disease (CAD). Various intravascular pressure measurement techniques exist, each with its own limitations. However, the diastolic hyperemia-free ratio (DFR) has shown significant clinical usefulness. DFR calculates the diastolic portion of the cardiac cycle at rest, utilizing a cutoff value of 0.89. The DFR window employs two criteria: Pulmonary Artery (PA) < Mean PA and a downsloping PA. The selection of the wave-free period is unnecessary for obtaining accurate results.

Case Presentation: This case report presents the application of DFR in the assessment of a 67-year-old male patient with an intermediate severity lesion in the left anterior descending artery.

Management and Result: The patient underwent physiologic assessment using DFR to evaluate the lesion in the left anterior descending artery. The DFR measurement indicated an intermediate severity of the lesion. Subsequent management decisions were made based on the DFR findings.

Conclusion: The utilization of DFR in the physiologic assessment of coronary artery disease has demonstrated clinical usefulness. This case report highlights its application in assessing an intermediate severity lesion in the left anterior descending artery. DFR provides valuable information for guiding management decisions in such cases. Further research and clinical experience are necessary to fully establish the utility of DFR in the assessment and management of coronary artery disease.