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Intracoronary imaging

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https://www.readbyqxmd.com/read/29275928/spontaneous-coronary-artery-dissection-scad-the-underdiagnosed-cardiac-condition-that-plagues-women
#1
REVIEW
Sandrine Lebrun, Rachel M Bond
Coronary heart disease (CHD) continues to be understudied, underdiagnosed, and undertreated in women. Gender and age bias complicate the evaluation of women with acute coronary syndrome (ACS). As a result, conditions like spontaneous coronary artery dissection (SCAD) are often missed. SCAD is an infrequent yet important cause of myocardial infarction (MI) with a predilection for young to middle aged women. The condition is thought to be under-reported, likely a result of both low index of suspicion as well as an unfamiliarity with SCAD's angiographic variants...
December 11, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29247976/coronary-calcification-as-a-mechanism-of-plaque-media-shrinkage-in-vessels-treated-with-bioresorbable-vascular-scaffold-a-multimodality-intracoronary-imaging-study
#2
Yaping Zeng, Rafael Cavalcante, Carlos Collet, Erhan Tenekecioglu, Yohei Sotomi, Yosuke Miyazaki, Yuki Katagiri, Taku Asano, Mohammad Abdelghani, Shaoping Nie, Christos V Bourantas, Nico Bruining, Yoshinobu Onuma, Patrick W Serruys
BACKGROUND AND AIMS: Whether coronary calcification is correlated with plaque/media shrinkage (PS) remains unclear. The aim of this study was to assess the relationship between the calcification process and PS, combining serial optical coherence tomography (OCT) and intravascular ultrasound (IVUS) in vessels treated with bioresorbable vascular scaffolds (BVS). METHODS: In 15 patients (16 vessels), OCT and IVUS images were matched using anatomic landmarks at post-procedure and five years...
December 2, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29238362/combined-thrombectomy-and-intracoronary-administration-of-glycoprotein-iib-iiia-inhibitors-improves-myocardial-reperfusion-in-patients-undergoing-primary-percutaneous-coronary-intervention-a-meta-analysis
#3
Xiao-Wei Niu, Jing-Jing Zhang, Ming Bai, Yu Peng, Zheng Zhang
Background: Suboptimal myocardial reperfusion is common in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PPCI). Furthermore, it results in increased infarct size and mortality rates. We performed a meta-analysis to evaluate the role of aspiration thrombectomy (AT) combined with intracoronary administration of glycoprotein IIb/IIIa inhibitors (GPI) in the improvement of myocardial reperfusion and clinical outcomes...
October 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/29222206/catastrophic-catheter-induced-coronary-artery-vasospasm-successfully-rescued-using-intravascular-ultrasound-imaging-guidance
#4
Masaki Kodaira, Ryota Tabei, Toshiki Kuno, Yohei Numasawa
A 46-year-old man underwent coronary angiography for stable angina. He developed inferior ST-segment myocardial infarction during the angiography. Intravascular ultrasound (IVUS) findings suggested coronary vasospasm. Intracoronary administration of isosorbide dinitrate restored the coronary flow. This case illustrates the essential role IVUS imaging played in establishing the diagnosis of catheter-induced coronary vasospasm.
December 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29212544/plaque-volume-and-plaque-risk-profile-in-diabetic-vs-non-diabetic-patients-undergoing-lipid-lowering-therapy-a-study-based-on-3d-intravascular-ultrasound-and-virtual-histology
#5
Tomas Kovarnik, Zhi Chen, Gary S Mintz, Andreas Wahle, Kristyna Bayerova, Ales Kral, Martin Chval, Karel Kopriva, John Lopez, Milan Sonka, Ales Linhart
BACKGROUND: Coronary atherosclerosis progresses faster in patients with diabetes mellitus (DM) and causes higher morbidity and mortality in such patients compared to non-diabetics ones (non-DM). We quantify changes in plaque volume and plaque phenotype during lipid-lowering therapy in DM versus non-DM patients using advanced intracoronary imaging. METHODS: We analyzed data from 61 patients with stable angina pectoris included to the PREDICT trial searching for prediction of plaque changes during intensive lipid-lowering therapy (40 mg rosuvastatin daily)...
December 7, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29207367/subadventitial-advancement-of-a-mother-and-child-catheter-to-allow-successful-recanalization-of-a-complex-in-stent-chronic-total-occlusion-testing-the-resistance-of-the-adventitia
#6
Luciano Candilio, Satoru Mitomo, Mauro Carlino, Antonio Colombo, Lorenzo Azzalini
In-stent chronic total occlusion (CTO) represents a challenging lesion subset for percutaneous coronary intervention (PCI), and although a true-to-true lumen crossing is the first-line strategy, a subadventitial approach may become necessary. Here we describe a case of successful in-stent right coronary artery CTO-PCI performed with subadventitial crossing, crushing of the occluded stents, and advancement of a mother-and-child catheter to the distal right coronary artery through the subadventitial space to allow stent delivery...
December 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29206694/diagnosis-and-management-of-a-patient-with-recurrent-variant-angina-and-history-of-percutaneous-coronary-intervention-vasospasm-and-percutaneous-coronary-intervention
#7
Massimo Fineschi, Flavio D'Ascenzi, Vasile Sirbu, Sergio Mondillo, Carlo Pierli
No abstract text is available yet for this article.
January 2018: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29182940/clinical-study-of-optical-coherence-tomography-in-the-diagnosis-of-peripheral-pulmonary-artery-thrombus
#8
Cheng Hong, Fu-Quan Luo, Chun-Li Liu, Nan-Shan Zhong, Jie-Ying Li, Wei Wang
BACKGROUND: Peripheral pulmonary artery thrombus (PPT) is common in the clinic. However, due to the lack of an ideal diagnostic tool, PPT cannot be quickly diagnosed and effectively treated at present. Optical coherence tomography (OCT) is a new intravascular imaging technique that is characterized by high image resolution. This technique is suitable for small vessel imaging and has the ability to distinguish red and white thrombi. OBJECTIVE: This study aimed to evaluate the value of OCT in the diagnosis of PPT and in identifying the nature of thrombi by comparing the difference in sensitivity between OCT and selective pulmonary angiography (SPA)...
October 28, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/29174825/when-intravascular-ultrasound-becomes-indispensable-in-percutaneous-coronary-intervention-of-a-chronic-total-occlusion
#9
REVIEW
Mohsen Mohandes, Hugo Vinhas, Francisco Fernández, Cristina Moreno, Mauricio Torres, Jordi Guarinos
Percutaneous coronary intervention of chronic total occlusion is a particular interventional area which requires high level of operator's experience and the support of additional tools based on intracoronary image such as intravascular ultrasound in many cases to clarify difficulties during procedures and to increase success rate. Implantation of long stents in many cases, the presence of stump ambiguity, and the use of specific techniques in this kind of interventions, such as reverse controlled antegrade and retrograde subintimal tracking (CART) and reverse CART make necessary in many cases the use of intravascular ultrasound for a better understanding of the situation, for reducing eventual complications and increasing procedural success rate...
October 13, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29169759/abnormal-coronary-vasoreactivity-in-transient-left-ventricular-apical-ballooning-tako-tsubo-syndrome
#10
Edoardo Verna, Stefano Provasoli, Sergio Ghiringhelli, Fabrizio Morandi, Jorge Salerno-Uriarte
BACKGROUND: The exact etiology and pathophysiologic mechanisms of tako-tsubo syndrome (TTS) remain controversial. OBJECTIVE: To further evaluate the abnormal coronary vasoreactivity and its possible anatomical substrate in TTS. METHODS: We studied 47 patients (46 women; age 67±12years) who underwent diagnostic cardiac catheterization and evaluation of coronary vasoreactivity by sequential acetylcholine (Ach), nitroglycerine and adenosine testing with angiographic and intracoronary pressure-Doppler flow monitoring...
January 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29166637/assessing-vessel-tone-during-coronary-artery-spasm-by-dual-acquisition-multidetector-computed-tomography-angiography
#11
Cai De Jin, Moo Hyun Kim, Eun Ju Kang, Young Rak Cho, Tae Ho Park, Ki Nam Lee, Victor Serebruany
BACKGROUND: Diminished vascular tone is an established biomarker of heart damage. Little is known about the extent of coronary vessel tone (CVT) with spasm as assessed by dual-acquisition multidetector computed tomography angiography (MCTA) in patients with vasospastic angina (VSA). OBJECTIVE: We evaluated the CVT modulated by intravenous nitrate injection (INI) using MCTA imaging in VSA patients. METHODS: Twenty-one VSA patients (60 ± 9 years; 76% males) who underwent initial MCTA (without morning vasodilation), followed by an intracoronary ergonovine provocation test were included...
November 23, 2017: Cardiology
https://www.readbyqxmd.com/read/29153502/clinical-outcomes-following-intravascular%C3%A2-imaging-guided-versus-coronary-angiography-guided-percutaneous-coronary-intervention-with%C3%A2-stent-implantation-a%C3%A2-systematic-review-and-bayesian-network-meta-analysis-of%C3%A2-31%C3%A2-studies-and-17-882-patients
#12
Sergio Buccheri, Gabriele Franchina, Sara Romano, Sebastiano Puglisi, Giuseppe Venuti, Paolo D'Arrigo, Bruno Francaviglia, Matteo Scalia, Antonio Condorelli, Marco Barbanti, Piera Capranzano, Corrado Tamburino, Davide Capodanno
OBJECTIVES: The authors sought to explore the comparative clinical efficacy of different imaging modalities for guiding percutaneous coronary interventions (PCI). BACKGROUND: Coronary angiography (CA) is the standard imaging modality for intraprocedural guidance of PCI. Intracoronary imaging techniques, including intravascular ultrasound (IVUS) and optical coherence tomography (OCT), can overcome some limitations of CA. METHODS: Comprehensive hierarchical Bayesian network meta-analysis of randomized clinical trials and adjusted observational studies comparing clinical outcomes of PCI with stent implantation guided by CA, IVUS, or OCT...
November 8, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29130567/treatment-strategies-in-coronary-microvascular-dysfunction-a-systematic-review-of-interventional-studies
#13
Hannah E Suhrs, Marie M Michelsen, Eva Prescott
Coronary microvascular dysfunction has been associated with a wide spectrum of diseases and conditions, and it has proven to be a strong prognostic marker of morbidity and mortality. Despite increased attention guideline-based treatment recommendations are lacking. We performed a systematic review of pharmacological and non-pharmacological interventions to improve coronary perfusion, assessed by intracoronary Doppler, transthoracic Doppler echocardiography, positron emission tomography, cardiac magnetic resonance imaging, transthoracic contrast perfusion echocardiography and dilution techniques...
November 11, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29106830/-contribution-of-intracoronary-imaging-in-acute-coronary-syndrome
#14
A Rougé, J Wintzer-Wehekind, S Milouchi, M Abdellaoui, B Faurie, J Monségu
Acute coronary syndrome (ACS) remains a major cause of mortality and morbidity in the world, although it has considerably decreased through technical and pharmacological advances. The physiopathological approach of the ACS has progressed considerably in recent years thanks to the anatomopathological work and the data of the endocoronary imaging, in particular of the endovascular ultrasound (IVUS). Plaque rupture is the most common cause of ACS, however OCT (optical coherence tomography) studies have shown that surface plaque erosion was more common than thought...
October 26, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/29051976/late-gadolinium-enhancement-on-cardiac-magnetic-resonance-imaging-is-associated-with-coronary-endothelial-dysfunction-in-patients-with-dilated-cardiomyopathy
#15
Mina Nakayama, Megumi Yamamuro, Seiji Takashio, Tomoaki Uemura, Naoki Nakayama, Kyoko Hirakawa, Seitaro Oda, Daisuke Utsunomiya, Koichi Kaikita, Seiji Hokimoto, Yasuyuki Yamashita, Yukiko Morita, Kazuo Kimura, Kouichi Tamura, Kenichi Tsujita
Myocardial fibrosis and coronary endothelial dysfunction are important determinants of outcome in patients with heart failure. However, the relationship of these factors in patients with dilated cardiomyopathy (DCM) is not fully understood. This study aimed to investigate the relationship between endothelium-dependent coronary vasomotor abnormality and late gadolinium enhancement (LGE) on cardiac magnetic resonance imaging (CMR) in patients with DCM. We examined 38 consecutive patients with DCM. All patients underwent CMR and the acetylcholine (ACh) provocation test using cardiac catheterization...
October 19, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29050684/comparison-of-accuracy-of-one-use-methods-for-calculating-fractional-flow-reserve-by-intravascular-optical-coherence-tomography-to-that-determined-by-the-pressure-wire-method
#16
Sun-Joo Jang, Jung-Min Ahn, Boyoung Kim, Ji-Min Gu, Hyung Jin Sung, Seung-Jung Park, Wang-Yuhl Oh
Although the identification of the hemodynamic significance of coronary lesions becomes important for revascularization strategy, the potential role of 3-dimensional high-resolution intracoronary optical coherence tomography (OCT) for predicting functional significance of coronary lesions remains unclear. We assessed the diagnostic performance of 2 computational approaches for deriving fractional flow reserve (FFR) from intravascular OCT images. We developed 2 methods to derive FFR-OCT by AFD (FFR-OCTAFD) and FFR-OCT by CFD (FFR-OCTCFD)...
September 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29049246/synergistic-elca-aspiration-des-thrombus-removal-strategy-embolus-impact-in-high-risk-plaque-a-case-report
#17
Yoshihiro Imai, Takehiro Yamashita, On Topaz
RATIONALE: Thin-cap fibroatheroma (TCFA) and red thrombus are suggested as a high-risk of embolic complications during percutaneous coronary intervention (PCI). Intracoronary aspiration procedures occasionally result in either an insufficient thrombus removal or provide no significant effects on TCFA. PATIENT CONCERNS: A 76-year-old male underwent coronary angiography for chest pain. DIAGNOSES: Coronary angiography revealed a tight stenosis at the right coronary artery which resulted in treatment by PCI...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29027116/effect-of-intracoronary-and-intravenous-melatonin-on-myocardial-salvage-index-in-patients-with-st-elevation-myocardial-infarction-a-randomized-placebo-controlled-trial
#18
Sarah Ekeloef, Natalie Halladin, Siv Fonnes, Svend Eggert Jensen, Tomas Zaremba, Jacob Rosenberg, Grete Jonsson, Jens Aarøe, Lærke Smidt Gasbjerg, Mette Marie Rosenkilde, Ismail Gögenur
Melatonin has attenuated myocardial ischemia reperfusion injury in experimental studies. We hypothesized that the administration of melatonin during acute myocardial reperfusion improves myocardial salvage index in patients with ST-elevation myocardial infarction. Patients (n = 48) were randomized in a 1:1 ratio to intracoronary and intravenous melatonin (total 50 mg) or placebo. The myocardial salvage index assessed by cardiac magnetic resonance imaging at day 4 (± 1 day) after primary percutaneous coronary intervention was similar in the melatonin group (n = 22) at 55...
October 12, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28993001/absence-of-adventitial-vasa-vasorum-formation-at-the-coronary-segment-with-myocardial-bridge-an-optical-coherence-tomography-study
#19
Kensuke Nishimiya, Yasuharu Matsumoto, Hongxin Wang, Zhonglie Piao, Kazuma Ohyama, Hironori Uzuka, Kiyotaka Hao, Ryuji Tsuburaya, Jun Takahashi, Kenta Ito, Hiroaki Shimokawa
BACKGROUND: Myocardial bridge (MB) is a myocardial bundle through which coronary segment tunnels and could compress coronary arteries causing myocardial ischemia. However, the characteristic structural findings of MB remain to be fully elucidated. Recently, we demonstrated that optical coherence tomography (OCT) enables us to visualize adventitial vasa vasorum (VV) formation in humans. In this study, we examined adventitial VV formation at the coronary segment with MB in humans using OCT...
October 4, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28982647/multimodality-intracoronary-imaging-with-near-infrared-spectroscopy-and-intravascular-ultrasound-in-asymptomatic-individuals-with-high-calcium-scores
#20
Ryan D Madder, Stacie VanOosterhout, David Klungle, Abbey Mulder, Matthew Elmore, Jeffrey M Decker, David Langholz, Thomas F Boyden, Jessica Parker, James E Muller
BACKGROUND: This study sought to determine the frequency of large lipid-rich plaques (LRP) in the coronary arteries of individuals with high coronary artery calcium scores (CACS) and to determine whether the CACS correlates with coronary lipid burden. METHODS AND RESULTS: Combined near-infrared spectroscopy and intravascular ultrasound was performed in 57 vessels in 20 asymptomatic individuals (90% on statins) with no prior history of coronary artery disease who had a screening CACS ≥300 Agatston units...
October 2017: Circulation. Cardiovascular Imaging
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