keyword
MENU ▼
Read by QxMD icon Read
search

microvascular angina

keyword
https://www.readbyqxmd.com/read/29471856/quantitative-cardiovascular-magnetic-resonance-perfusion-imaging-identifies-reduced-flow-reserve-in-microvascular-coronary-artery-disease
#1
Benjamin Zorach, Peter W Shaw, Jamieson Bourque, Sujith Kuruvilla, Pelbreton C Balfour, Yang Yang, Roshin Mathew, Jonathan Pan, Jorge A Gonzalez, Angela M Taylor, Craig H Meyer, Frederick H Epstein, Christopher M Kramer, Michael Salerno
BACKGROUND: Preliminary semi-quantitative cardiovascular magnetic resonance (CMR) perfusion studies have demonstrated reduced myocardial perfusion reserve (MPR) in patients with angina and risk factors for microvascular disease (MVD), however fully quantitative CMR has not been studied. The purpose of this study is to evaluate whether fully quantitative CMR identifies reduced MPR in this population, and to investigate the relationship between epicardial atherosclerosis, left ventricular hypertrophy (LVH), extracellular volume (ECV), and perfusion...
February 22, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29429637/coronary-microembolization-and-microvascular-dysfunction
#2
Gerd Heusch, Andreas Skyschally, Petra Kleinbongard
Plaque erosion, fissuring or rupture occurs spontaneously or during coronary interventions. At some residual blood flow, the atherothrombotic debris is washed into the coronary microcirculation, causing physical obstruction, vasoconstriction, inflammation and ultimately microinfarction. Coronary microembolization also contributes to microvascular obstruction in reperfused acute myocardial infarction. Patients with microvascular obstruction after reperfused myocardial infarction have worse prognosis. Cardioprotective strategies to avoid acute coronary microembolization and rescue myocardium from microvascular obstruction have not yet been established in clinical practice...
February 3, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29407076/the-prognostic-value-of-coronary-endothelial-and-microvascular-dysfunction-in-subjects-with-normal-or-non-obstructive-coronary-artery-disease-a-systematic-review-and-meta-analysis
#3
Philip Brainin, Daria Frestad, Eva Prescott
AIMS: Coronary vascular dysfunction is linked with poor cardiovascular prognosis in patients without obstructive coronary artery disease (CAD) but a critical appraisal of the literature is lacking. METHODS AND RESULTS: We performed a systematic review and meta-analysis to quantify the cardiovascular risk associated with endothelial dependent and non-endothelial dependent coronary vascular dysfunction in patients with normal or non-obstructive CAD (epicardial stenosis <50%)...
March 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29333218/impact-of-mindfulness-based-stress-reduction-therapy-on-myocardial-function-and-endothelial-dysfunction-in-female-patients-with-microvascular-angina
#4
Bong Joon Kim, In Suk Cho, Kyoung Im Cho
Background: Mindfulness-based stress reduction (MBSR) is a structured group program that employs mindfulness meditation to alleviate suffering associated with physical, psychosomatic, and psychiatric disorders. In this study, we investigate the impact of MBSR on left ventricular (LV) and endothelial function in female patients with microvascular angina. Methods: A total of 34 female patients (mean age 52.2 ± 13.8 years) diagnosed with microvascular angina underwent a MBSR program with anti-anginal medication for 8 weeks...
December 2017: Journal of Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/29315085/biopsy-confirmed-endothelial-cell-activation-in-patients-with-coronary-microvascular-dysfunction
#5
Hannes Lindemann, Ivana Petrovic, Stephan Hill, Anastasios Athanasiadis, Heiko Mahrholdt, Tim Schäufele, Karin Klingel, Udo Sechtem, Peter Ong
BACKGROUND: Patients with angina yet having unobstructed coronaries are found in ∼50% of cases undergoing invasive angiography. Coronary spasm and microvascular dysfunction can be responsible for the clinical presentation in ∼60% of cases. However, little is known about structural changes in the myocardium. The aim of this study was to describe findings in endomyocardial biopsies of symptomatic patients with unobstructed coronaries. PATIENTS AND METHODS: We retrospectively analyzed a cohort of 1416 consecutive patients who underwent endomyocardial biopsy sampling and coronary angiography between 2002 and 2016 for various clinical indications...
January 8, 2018: Coronary Artery Disease
https://www.readbyqxmd.com/read/29249430/prevalence-of-takayasu-arteritis-in-young-women-with-acute-ischemic-heart-disease
#6
Giulio Cavalli, Alessandro Tomelleri, Davide Di Napoli, Elena Baldissera, Lorenzo Dagna
OBJECTIVES: Takayasu arteritis (TA), a systemic vasculitis typically occurring in female patients aged ≤40, can affect coronary arteries and cause ischemic heart disease (IHD). In this study, we investigated the prevalence of TA in young women presenting with IHD in the Emergency Department. METHODS: We evaluated hospital records of 158,860 consecutive female patients aged <40, who accessed the Emergency Department of our institution over 8 consecutive years (2007-2015)...
February 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29242099/downregulation-of-circulating-mots-c-levels-in-patients-with-coronary-endothelial-dysfunction
#7
Qing Qin, Silvia Delrio, Junxiang Wan, R Jay Widmer, Pinchas Cohen, Lilach O Lerman, Amir Lerman
BACKGROUND: MOTS-c is one of the newly identified mitochondrial-derived peptides which play a role in regulating metabolic homeostasis. The current study aimed to investigate whether circulating MOTS-c levels are also associated with endothelial dysfunction(ED) in patients without significant structural coronary lesions. METHODS: Forty patients undergoing coronary angiography and endothelial function testing for clinical indications of recurrent angina with no structural coronary lesions were included in the study...
December 6, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29228159/patients-with-acute-myocardial-infarction-and-non-obstructive-coronary-arteries-safety-and-prognostic-relevance-of-invasive-coronary-provocative-tests
#8
Rocco A Montone, Giampaolo Niccoli, Francesco Fracassi, Michele Russo, Filippo Gurgoglione, Giulia Cammà, Gaetano A Lanza, Filippo Crea
Aims: Functional alterations of epicardial coronary arteries or coronary microcirculation represent a frequent cause of myocardial infarction and non-obstructive coronary arteries (MINOCA). We aimed at assessing the prognostic value of intracoronary provocative tests in patients presenting with MINOCA and in which other causes of MINOCA have been excluded. Methods and results: We prospectively evaluated patients with a diagnosis of MINOCA, excluding patients with aetiologies other than suspected coronary vasomotor abnormalities...
January 7, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29222822/coronary-microvascular-dysfunction-and-myocardial-contractile-reserve-in-women-with-angina-and-no-obstructive-coronary-artery-disease
#9
Marie M Michelsen, Adam Pena, Naja D Mygind, Jan Bech, Ida Gustafsson, Jens Kastrup, Henrik S Hansen, Nis Høst, Peter R Hansen, Eva Prescott
BACKGROUND: Coronary microvascular dysfunction (CMD) is a potential cause of myocardial ischemia and may affect myocardial function at rest and during stress. We investigated whether CMD was associated with left ventricular diastolic and systolic function at rest and during pharmacologically induced hyperemic stress. METHODS: In a prospective cohort study, we included 963 women with angina, left ventricular ejection fraction (LVEF) >45%, and an invasive coronary angiogram without significant stenosis (<50%)...
December 8, 2017: Echocardiography
https://www.readbyqxmd.com/read/29198139/evaluation-of-the-coronary-flow-by-the-coronary-clearance-time-in-patients-with-cardiac-syndrome-x
#10
Erkan Yildirim, Uygar Cagdas Yuksel, Murat Celik, Baris Bugan, Mutlu Gungor, Yalcin Gokoglan, Mustafa Koklu, Suat Gormel, Salim Yasar, Cem Barcin
Objective The vessels involved in the microcirculation are too small to be visualized by conventional angiography and no tools are currently available that can directly evaluate the coronary microcirculation. This study evaluated the coronary clearance frame count (CCFC) in patients with cardiac syndrome X (CSX). Methods The retrospective study enrolled patients with angina, who had a positive nuclear imaging test and normal coronary angiography; and a control group consisting of patients who underwent an angiogram to exclude coronary artery disease...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29189827/-coronary-microvascular-dysfunction-past-present-and-future-of-an-evolving-disease
#11
Vincenzo Sucato, Salvatore Evola, Giuseppina Novo, Nicolò Bellante, Giuseppe Andolina, Salvatore Novo
Coronary atherosclerosis is the main cause of myocardial ischemia. Nevertheless 10-30% of patients with angina has angiographically normal coronary arteries. In the last 30 years, several studies showed that in these patients the symptoms can be caused by dysfunction of the coronary microcirculation. Coronary microvascular dysfunction (CMVD) occurring in patients affected by specific cardiac or systemic diseases may be due to mechanisms of the underlying disease. On the other hand, in several patients affected by angina with angiographically normal coronary arteries, there is no specific disease, and CMVD only is responsible for the clinical picture...
December 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/29132649/doppler-versus-thermodilution-derived-coronary-microvascular-resistance-to-predict-coronary-microvascular-dysfunction-in-patients-with-acute-myocardial-infarction-or-stable-angina-pectoris
#12
Rupert P Williams, Guus A de Waard, Kalpa De Silva, Matthew Lumley, Kaleab Asrress, Satpal Arri, Howard Ellis, Awais Mir, Brian Clapp, Amedeo Chiribiri, Sven Plein, Paul F Teunissen, Maurits R Hollander, Michael Marber, Simon Redwood, Niels van Royen, Divaka Perera
Coronary microvascular resistance is increasingly measured as a predictor of clinical outcomes, but there is no accepted gold-standard measurement. We compared the diagnostic accuracy of 2 invasive indices of microvascular resistance, Doppler-derived hyperemic microvascular resistance (hMR) and thermodilution-derived index of microcirculatory resistance (IMR), at predicting microvascular dysfunction. A total of 54 patients (61 ± 10 years) who underwent cardiac catheterization for stable coronary artery disease (n = 10) or acute myocardial infarction (n = 44) had simultaneous intracoronary pressure, Doppler flow velocity and thermodilution flow data acquired from 74 unobstructed vessels, at rest and during hyperemia...
October 10, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29096805/sex-related-differences-in-vasomotor-function-in-patients-with-angina-and%C3%A2-unobstructed-coronary-arteries
#13
Ahmed Aziz, Henrik Steen Hansen, Udo Sechtem, Eva Prescott, Peter Ong
BACKGROUND: Coronary vasomotor dysfunction is an important mechanism for angina in patients with unobstructed coronary arteries. OBJECTIVES: The purpose of this study was to determine sex differences in the prevalence and clinical presentation of vasomotor dysfunction in a European population and to examine sex differences in the dose of acetylcholine leading to a positive acetylcholine provocation test (ACH test). METHODS: Between 2007 and 2014, we included 1,379 consecutive patients with stable angina, unobstructed coronaries and ACH test performed for epicardial vasospasm or coronary microvascular dysfunction (CMD) due to microvascular spasm...
November 7, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29046002/-optimal-diagnostics-and-therapy-for-microvascular-angina-pectoris
#14
Peter Ong, Udo Sechtem
Patients with microvascular angina are characterized by angina pectoris with proof of myocardial ischemia in the absence of any relevant epicardial stenosis and without myocardial disease (type 1 coronary microvascular dysfunction according to Crea and Camici). Structural and functional alterations of the coronary microvessels (diameter < 500 µm) are the reason for this phenomenon. Frequently such alterations are associated with cardiovascular risk factors. Patients with angina pectoris without epicardial stenoses represent for 10 - 50 % of all patients undergoing coronary angiography depending on the clinical presentation...
October 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29038224/effect-of-elective-percutaneous-coronary-intervention-on-hyperemic-absolute-coronary-blood-flow-volume-and-microvascular-resistance
#15
Yoshihisa Kanaji, Tadashi Murai, Taishi Yonetsu, Eisuke Usui, Makoto Araki, Junji Matsuda, Masahiro Hoshino, Masao Yamaguchi, Takayuki Niida, Masahiro Hada, Sadamitsu Ichijyo, Rikuta Hamaya, Yoshinori Kanno, Mitsuaki Isobe, Tsunekazu Kakuta
BACKGROUND: The hemodynamics involved in the relationship between absolute coronary blood flow (ABF) volume and myocardial resistance (MR) are complex, and the effect of percutaneous coronary intervention (PCI) on their changes remains unclear. The aim of this study was to investigate the differences in hyperemic ABF and MR before and after elective PCI using a thermodilution method. METHODS AND RESULTS: We investigated 28 vessels (right coronary artery, 9; left anterior descending coronary artery, 18; left circumflex coronary artery, 1) from 28 patients with stable angina pectoris undergoing elective PCI...
October 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29031990/international-standardization-of-diagnostic-criteria-for-microvascular-angina
#16
Peter Ong, Paolo G Camici, John F Beltrame, Filippo Crea, Hiroaki Shimokawa, Udo Sechtem, Juan Carlos Kaski, C Noel Bairey Merz
Standardization of diagnostic criteria for ischemic symptoms due to coronary microvascular dysfunction (CMD) is needed for further investigation of patients presenting with anginal chest pain consistent with "microvascular angina" (MVA). At the annual Coronary Vasomotion Disorders International Study Group (COVADIS) Summits held in August 2014 and 2015, the following criteria were agreed upon for the investigative diagnosis of microvascular angina: (1) presence of symptoms suggestive of myocardial ischemia; (2) objective documentation of myocardial ischemia, as assessed by currently available techniques; (3) absence of obstructive CAD (<50% coronary diameter reduction and/or fractional flow reserve (FFR) >0...
September 8, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29030424/stable-coronary-syndromes-pathophysiology-diagnostic-advances-and-therapeutic-need
#17
REVIEW
Thomas J Ford, David Corcoran, Colin Berry
The diagnostic management of patients with angina pectoris typically centres on the detection of obstructive epicardial CAD, which aligns with evidence-based treatment options that include medical therapy and myocardial revascularisation. This clinical paradigm fails to account for the considerable proportion (approximately one-third) of patients with angina in whom obstructive CAD is excluded. This common scenario presents a diagnostic conundrum whereby angina occurs but there is no obstructive CAD (ischaemia and no obstructive coronary artery disease-INOCA)...
February 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28993120/coronary-lumen-volume-to-myocardial-mass-ratio-in-primary-microvascular-angina
#18
Rominder Grover, Jonathon A Leipsic, John Mooney, Shaw-Hua Kueh, Mickael Ohana, Bjarne L Nᴓrgaard, Ashkan Eftekhari, Jeroen J Bax, Darra T Murphy, Cameron J Hague, Michael A Seidman, Philipp Blanke, Tara Sedlak, Stephanie L Sellers
BACKGROUND: Microvascular angina (MVA) is an incompletely understood clinical entity. Computational analysis of coronary Computed Tomography Angiography (CTA) has shown an association between low coronary lumen volume to myocardial mass (V/M) ratio and lower Fractional Flow Reserve values, independent of plaque measures. We hypothesized that low V/M ratio may be present in patients with MVA. METHODS: A retrospective case-control analysis was performed using patients fulfilling guideline criteria for MVA with controls matched for age, gender, coronary risk factors and atherosclerotic plaque burden...
September 22, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28979725/effect-of-nicorandil-on-qt-dispersion-in-patients-with-stable-angina-pectoris-undergoing-elective-angioplasty-a-triple-blind-randomized-placebo-controlled-study
#19
Homa Fal Suleimani, Ali Eshraghi, Mehdi Hasanzadeh Daloee, Sara Hoseini, Nima Nakhaee
BACKGROUND: Nicorandil leads to the relaxation of fine vascular smooth muscle, and thus causes vasodilatation of major epicardial. Also, it has anti-arrhythmic and cardio-protective effects by improving reperfusion, and ultimately leads to a reduction in microvascular damage caused by percutaneous coronary intervention (PCI). OBJECTIVE: The aim of this study was to determine the effect of nicorandil on QT interval dispersion (QTd) in patients with stable angina pectoris during elective angioplasty...
August 2017: Electronic Physician
https://www.readbyqxmd.com/read/28966326/bevacizumab-related-microvascular-angina-and-its-management-with-nicorandil
#20
Manami Katoh, Norihiko Takeda, Takahide Arimoto, Hajime Abe, Katsutoshi Oda, Yutaka Osuga, Tomoyuki Fujii, Issei Komuro
Bevacizumab, an inhibitor of vascular endothelial growth factor (VEGF)-A, is currently used to treat patients with ovarian or colon cancer. While several cardiovascular toxicities related to bevacizumab-containing regimens have been reported, the effect of bevacizumab on the coronary microcirculation has not been fully elucidated. Here we report a case of 54-year-old female patient who developed microvascular angina after a series of bevacizumab-containing chemotherapeutic regimen. The discontinuation of bevacizumab and nicorandil administration was effective in alleviating her chest discomfort and the ischemic changes on her ECG...
October 21, 2017: International Heart Journal
keyword
keyword
15440
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"