Current developments and future applications of intracoronary hemodynamics

Edward Coverstone, Robert Shapiro, Jasvindar Singh

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Intracoronary hemodynamic assessment of the physiologic significance of coronary lesions improves clinical outcomes in patients with coronary artery disease. Coronary flow velocity reserve, fractional flow reserve, instantaneous wave-free ratio, and index of microcirculatory resistance utilize sensor-mounted guidewires to approximate coronary flow. Coronary flow velocity reserve and fractional flow reserve rely on pharmacologic administration of adenosine to achieve hyperemia and diagnose epicardial lesion severity. As an adenosine-free index, the instantaneous wave-free ratio utilizes a wave-free period in the mid-late diastole during which resistance is constant and low to assess lesion significance. The index of microcirculatory resistance combines hyperemic pressure measurements with thermodilution to quantify microvascular resistance. We review the physiology, clinical trials, and clinical applications of these invasive hemodynamic assessments.

Original languageEnglish
Pages (from-to)448-458
Number of pages11
JournalCoronary Artery Disease
Volume26
Issue number5
DOIs
StatePublished - Jul 11 2015

Keywords

  • coronary artery disease
  • coronary flow reserve
  • fractional flow reserve
  • hemodynamics
  • index of microcirculatory resistance
  • instantaneous wave-free ratio

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