Interventional Cardiology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
coronary steal phenomenon
A pathological condition where blood flow is redirected away from stenotic coronary vessels to areas with less resistance, potentially worsening ischemia.
instantaneous wave-free ratio
A pressure-derived index for assessing coronary stenosis significance without need for adenosine-induced hyperemia, abbr...
intravascular lithotripsy
A novel technique using sonic pressure waves to fracture calcium deposits within coronary arteries during percutaneous i...
intravascular ultrasound
A catheter-based imaging technique providing cross-sectional views of coronary arteries from within the vessel.
ischemic time
The duration from symptom onset to restoration of coronary blood flow, a critical metric in acute coronary syndrome mana...
IVUS
Acronym for intravascular ultrasound, an imaging technique providing real-time cross-sectional views of coronary arterie...
jailing technique
A bifurcation stenting approach where a side branch guide wire is trapped behind stent struts.
Killip class
A clinical classification system for heart failure severity in acute myocardial infarction patients.
kissing balloon technique
Simultaneous balloon inflation in two adjacent coronary vessels, typically used for bifurcation lesion treatment to opti...
LAD wrap-around
An anatomical variant where the left anterior descending artery extends beyond the cardiac apex.
lesion preparation
Pre-treatment techniques used to modify coronary lesions before stent deployment, including balloon dilatation, atherect...
LIMA
Left internal mammary artery, the preferred conduit for surgical coronary bypass grafting to the left anterior descendin...
LMCA
Left main coronary artery, the short vessel that bifurcates into the LAD and circumflex arteries.
MACE
Major adverse cardiac events, a composite endpoint used in cardiovascular research including death, myocardial infarctio...
microcatheter
An ultra-thin catheter designed for accessing small coronary vessels and complex anatomy.
microvascular dysfunction
Impaired function of small coronary arteries that cannot be visualized on standard angiography, often causing chest pain...
minimum stent area
Smallest cross-sectional area within a deployed stent, critical parameter for optimizing expansion and preventing compli...
no-reflow phenomenon
The absence of coronary blood flow despite successful reopening of an occluded vessel during PCI.
NSTEMI
Non-ST-elevation myocardial infarction, a type of heart attack that requires urgent intervention but may not show charac...
OCT
High-resolution intravascular imaging modality using near-infrared light to assess coronary vessel wall morphology and s...
optical coherence tomography
A high-resolution intravascular imaging technique using light waves to visualize coronary artery microstructure.
ostial lesion
A stenotic lesion located at the origin or mouth of a coronary vessel, presenting unique technical challenges for interv...
overlapping stents
Placement of multiple stents with intentional overlap to treat long lesions or vessel segments requiring complete scaffo...
percutaneous coronary intervention
A minimally invasive cardiac procedure to open blocked coronary arteries using catheter-based techniques.
plaque burden
The percentage of vessel wall occupied by atherosclerotic plaque, typically measured by intravascular imaging techniques...