Spontaneous Coronary Artery Dissection Pathophysiological Insights From Optical Coherence Tomography

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F19%3A00072476" target="_blank" >RIV/00159816:_____/19:00072476 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14110/19:00113020

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S1936878X19301457?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S1936878X19301457?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcmg.2019.01.015" target="_blank" >10.1016/j.jcmg.2019.01.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spontaneous Coronary Artery Dissection Pathophysiological Insights From Optical Coherence Tomography

Popis výsledku v původním jazyce

OBJECTIVES This study used optical coherence tomography to investigate the mechanism of false lumen (FL) formation in spontaneous coronary artery dissection (SCAD) by studying: 1) differences between fenestrated and nonfenestrated SCAD; 2) vasa vasorum density; and 3) light attenuation characteristics of the FL. BACKGROUND SCAD is an increasingly recognized cause of acute coronary syndromes, characterized by FL formation and compression of the true lumen (TL). The mechanisms underlying FL formation remain poorly understood. METHODS A total of 65 SCAD patients (68 vessels) who underwent acute OCT imaging as part of routine clinical care were included. Images were classified by the absence or presence of a connection (fenestration) between the TL and FL. Indexed measurements of TL stenosis, external elastic lamina (EEL) area, FL area, and light attenuation of the FL were assessed. Vasa vasorum densities of SCAD cases were compared with those in control non-SCAD myocardial infarction cases. RESULTS In nonfenestrated cases, there was significantly larger expansion of the EEL area (9.1% vs. -1.9%; p&lt;0.05) and a larger FL area (73.6% vs. 53.2%, respectively; p&lt;0.05) in dissected segments. No significant differences were found between vasa vasorum density in SCAD and those in control subjects. The FL contents were heterogeneous but attenuated less light than whole blood or thrombus (4.28 +/- 0.55 mm(-1) vs. 5.08 +/- 0.56 mm(-1); p &lt; 0.05; vs. 4.96 +/- 0.56 mm(-1); p &lt; 0.05). CONCLUSIONS These observational data suggest that the absence of a fenestration leads to increased FL pressure and compression of the TL. Although vasa vasorum may still be implicated in pathogenesis, increased vasa vasorum density could be an epiphenomenon of vascular healing. (C) 2019 the American College of Cardiology Foundation. Published by Elsevier. All rights reserved.

Název v anglickém jazyce

Spontaneous Coronary Artery Dissection Pathophysiological Insights From Optical Coherence Tomography

Popis výsledku anglicky

OBJECTIVES This study used optical coherence tomography to investigate the mechanism of false lumen (FL) formation in spontaneous coronary artery dissection (SCAD) by studying: 1) differences between fenestrated and nonfenestrated SCAD; 2) vasa vasorum density; and 3) light attenuation characteristics of the FL. BACKGROUND SCAD is an increasingly recognized cause of acute coronary syndromes, characterized by FL formation and compression of the true lumen (TL). The mechanisms underlying FL formation remain poorly understood. METHODS A total of 65 SCAD patients (68 vessels) who underwent acute OCT imaging as part of routine clinical care were included. Images were classified by the absence or presence of a connection (fenestration) between the TL and FL. Indexed measurements of TL stenosis, external elastic lamina (EEL) area, FL area, and light attenuation of the FL were assessed. Vasa vasorum densities of SCAD cases were compared with those in control non-SCAD myocardial infarction cases. RESULTS In nonfenestrated cases, there was significantly larger expansion of the EEL area (9.1% vs. -1.9%; p&lt;0.05) and a larger FL area (73.6% vs. 53.2%, respectively; p&lt;0.05) in dissected segments. No significant differences were found between vasa vasorum density in SCAD and those in control subjects. The FL contents were heterogeneous but attenuated less light than whole blood or thrombus (4.28 +/- 0.55 mm(-1) vs. 5.08 +/- 0.56 mm(-1); p &lt; 0.05; vs. 4.96 +/- 0.56 mm(-1); p &lt; 0.05). CONCLUSIONS These observational data suggest that the absence of a fenestration leads to increased FL pressure and compression of the TL. Although vasa vasorum may still be implicated in pathogenesis, increased vasa vasorum density could be an epiphenomenon of vascular healing. (C) 2019 the American College of Cardiology Foundation. Published by Elsevier. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30201 - Cardiac and Cardiovascular systems

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JACC-Cardiovascular Imaging

ISSN

1936-878X

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

2475-2488

Kód UT WoS článku

000500693700015

EID výsledku v databázi Scopus

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