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  • lesions
  • Third, a compliant arc of normal arterial wall borders part of the lumen in the majority of coronary lesions. (ahajournals.org)
  • Methods and Results- A novel 0.014-inch dual-sensor (pressure and Doppler velocity) guidewire was used in 15 coronary lesions to obtain per-beat averages of pressure drop and velocity after an intracoronary bolus of adenosine. (ahajournals.org)
  • AbstractPurpose of ReviewThe purpose of this article is to review the basic principles of near-infrared spectroscopy (NIRS) and its contemporary role in intracoronary imaging.Recent FindingsNIRS has been demonstrated to effectively detect culprit lesions in acute coronary syndromes (ACS) and to potentially identify vulnerable plaque. (medworm.com)
  • CTA lesions were analyzed quantitatively and area stenoses ≥ 50 % and ≥ 75 % were compared to the MPI findings. (ahajournals.org)
  • severity
  • Percentage of stenosis properly classified by iFR® in terms of hemodynamic severity compare to FFR in MVD patients. (clinicaltrials.gov)
  • Baseline characteristics, maximum inflation pressures, types of balloon catheters used, and routinely registered angiographic stenosis properties (severity, length, eccentricity, and calcification) were similar in both groups. (ahajournals.org)
  • Fractional
  • Fractional flow reserve (FFR), coronary flow reserve (CFVR), and velocity-based indices of stenosis resistance (h-SRv) and microvascular resistance (h-MRv) at maximal hyperemia were compared. (ahajournals.org)
  • Measurement
  • After 15-220 minutes of observation, the dogs were killed and the hearts removed for the measurement of the activity of 201Tl and the radioactive microspheres in the normal (left anterior descending coronary artery [LAD]) and flow-restricted (left circumflex coronary artery [LCX]) regions. (ahajournals.org)
  • However, it evolved with no Japanese standards for the measurement of images, the index of percutaneous coronary intervention (PCI) procedures, and the reporting of results. (medworm.com)
  • Measurement of coronary flow reserve can be used to identify functionally important luminal narrowing of the LAD artery. (ahajournals.org)
  • arterial
  • 12 Recently, we showed that phase-contrast MRI (PC-MRI) provides accurate and reliable measurements of coronary arterial flow reserve. (ahajournals.org)
  • Intervention
  • ΔP-v relations from resting to maximal hyperemic velocity were constructed before and after stepwise executed percutaneous coronary intervention (PCI). (ahajournals.org)
  • The Current Status of Intervention for Intermediate Coronary Stenosis in the Korean Percutaneous Coronary Intervention (K-PCI) Registry. (medworm.com)
  • AbstractPurpose of ReviewTo summarize the current state-of-the-art of intracoronary imaging with a focus on clinical outcomes, novel approaches, and anticipated future developments.Recent FindingsMultiple randomized trials have demonstrated that intravascular ultrasound (IVUS) guidance of percutaneous coronary intervention (PCI) significantly reduces major cardiac adverse events (MACE), and in particular, rates of target lesion failure or clinical restenosis. (medworm.com)
  • aneurysm
  • A self-expandable coronary stent system to treat complex coronary stenosis complicated by poststenotic aneurysm: an optical coherence tomographic evidence-based case report. (biomedsearch.com)
  • We have successfully treated a coronary stenosis complicated by a poststenotic aneurysm in a 60-year-old patient with atypical angina using a novel self-expandable coronary stent system implanted with optical coherence tomography (OCT) guidance. (biomedsearch.com)
  • ischemia
  • We tested the hypothesis that chronic myocardial ischemia (repetitive bouts of coronary stenosis, CS) may induce IPC mediated by different mechanisms. (ahajournals.org)
  • To test this hypothesis, we compared the effects of repetitive ischemia, induced by 6 episodes of 90-minute coronary stenosis and 12-hour reperfusion, with a more traditional protocol of IPC, ie, delayed or second-window IPC (SWIPC). (ahajournals.org)
  • Critical coronary stenosis would be defined as the degree of stenosis at which significant changes in ischemia-related oxidative stress (antioxidant reserve and/or MDA) will first be apparent. (usask.ca)
  • These results suggest that biochemical parameters related to ischemia were evident at 20-29% of coronary artery stenosis. (usask.ca)
  • angiographic
  • Therefore, although the predictive value of these findings is low, detailed evaluation of angiographic morphology of coronary stenoses may improve patient selection and reduce complication rates of PTCA. (ahajournals.org)