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Right ventricular myocardial infarction

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https://www.readbyqxmd.com/read/28529306/normalization-of-diffuse-st-depression-with-avr-elevation-after-rehydration-in-a-patient-with-severe-aortic-stenosis
#1
Sachin R Patel, Vikas J Patel, Brittany Clark, George Rust
BACKGROUND Isolated ST elevation in lead aVR in combination with global ST depression with normalization after rehydration is a unique electrocardiographic pattern that is associated with a broad range of diagnoses. Its association with left main coronary artery disease and other acute coronary syndromes suggest the need for early and aggressive cardiac evaluation. CASE REPORT A 53-year-old man presented with altered mental status and loss of consciousness. He was unresponsive, hypotensive, tachycardiac, and diaphoretic...
May 22, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28525971/left-ventricular-mural-thrombus-and-dual-coronary-embolization-associated-with-hyperthyroid-cardiomyopathy-and-atrial-fibrillation-a-case-report
#2
Guohui Liu, Ping Yang, Yuquan He
BACKGROUND: The majority of acute myocardial infarction (AMI) events are caused by thrombotic occlusion of the coronary artery, secondary to atherosclerotic plaque erosion or rupture. However, coronary embolism (CE), while rare, is being increasingly recognized as an important cause of AMI. We present the case of a patient with multi-site coronary artery embolization associated with hyperthyroid-related cardiomyopathy and atrial fibrillation. CASE PRESENTATION: A 49-year-old female with a history of hyperthyroidism and atrial fibrillation (AF) was admitted to our hospital presenting with right upper limb pain and swelling...
May 19, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28520537/anomalous-origin-of-right-coronary-artery-from-left-coronary-sinus-13-cases-treated-with-the-reimplantation-technique
#3
Alain Cubero, Alejandro Crespo, Gadah Hamzeh, Andrés Cortes, Daniel Rivas, José Ignacio Aramendi
OBJECTIVES: Anomalous aortic origin of a coronary artery is uncommon but potentially clinically significant. Manifestations vary from asymptomatic patients to those who present with angina pectoris, myocardial infarction, heart failure, syncope, arrhythmias, and sudden death. We describe our experience with surgical reimplantation and results at midterm follow-up. METHODS: Between February 2003 and July 2016, a total of 13 patients with anomalous origin of the right coronary artery (RCA) from the left sinus underwent surgical reimplantation...
May 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28518124/direct-re-implantation-of-left-coronary-artery-into-the-aorta-in-adults-with-anomalous-origin-of-left-coronary-artery-from-the-pulmonary-artery-alcapa
#4
Reza Tavakoli, Peiman Jamshidi, Nassrin Yamani, Max Gassmann
Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital anomaly which is one of leading causes of myocardial ischemia and infarction in children. If left untreated, it results in a 90% mortality rate in the first year of life. In patients who survive to the adulthood, the coronary steal phenomenon and retrograde left-sided coronary flow provide a substrate for chronic subendocardial ischemia, which may lead to left ventricular dysfunction, ischemic mitral regurgitation, malignant ventricular arrhythmias, and sudden cardiac death...
April 24, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28500753/a-0h-1h-protocol-for-safe-early-discharge-of-chest-pain-patients
#5
Arash Mokhtari, Bertil Lindahl, Alexandru Schiopu, Troels Yndigegn, Ardavan Khoshnood, Patrik Gilje, Ulf Ekelund
OBJECTIVES: Guidelines recommend a 0h/1h high-sensitivity cardiac troponin T (hs-cTnT) diagnostic strategy in acute chest pain patients. There is however little data on the performance of this strategy when combined with clinical risk stratification. We aimed to evaluate the diagnostic accuracy of an accelerated diagnostic protocol (ADP) using the 0h/1h hs-cTnT strategy together with an adapted Thrombolysis In Myocardial Infarction (TIMI) score and ECG for ruling out major adverse cardiac events (MACE) within 30 days...
May 13, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28498644/early-versus-late-percutaneous-revascularization-in-patients-hospitalized-with-non-st-segment-elevation-myocardial-infarction-the-atherosclerosis-risk-in-communities-aric-surveillance-study
#6
Sameer Arora, Kunihiro Matsushita, Arman Qamar, R Brandon Stacey, Melissa C Caughey
BACKGROUND: Current guidelines recommend early invasive intervention (<24 hours) for high risk patients with non-ST-segment elevation myocardial infarction (NSTEMI). A delayed invasive strategy (24-72 hours) is considered reasonable for low risk patients. The real-world effectiveness of this strategy is unknown. METHODS: The ARIC Study has conducted hospital surveillance of acute myocardial infarction (MI) since 1987. NSTEMI was classified using a validated algorithm...
May 12, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28485279/predicting-the-infarct-related-artery-in-stemi-from-the-surface-ecg-independent-validation-of-proposed-criteria
#7
Rob Eerdekens, Jose F Chavez, Justin M Fox, James D Flaherty, Lukas Rc Dekker, Nils P Johnson
AIMS: This study independently evaluated the diagnostic performance of electrocardiographic (ECG) criteria to predict the infarct related artery (IRA) in patients with an acute ST-segment elevation myocardial infarction (STEMI). While a number of ECG criteria have been proposed to predict the IRA in STEMI, many of these "rules" came from modestly sized populations and did not undergo external validation. Therefore, we evaluated popular criteria from the literature in an independent cohort...
May 9, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28470918/isolated-left-ventricular-failure-is-a-predictor-of-poor-outcome-in-patients-receiving-veno-arterial-extracorporeal-membrane-oxygenation
#8
Corstiaan A den Uil, Lucia S Jewbali, Martijn J Heeren, Alina A Constantinescu, Nicolas M Van Mieghem, Dinis Dos Reis Miranda
AIMS: We investigated survival according to the nature of heart failure (isolated left, vs isolated right, vs biventricular heart failure) in patients undergoing extracorporeal membrane oxygenation (ECMO) for refractory cardiogenic shock of different causes. METHODS AND RESULTS: This single-center study included 132 patients with acute myocardial infarction (20%), acute on chronic heart failure (14%), post cardiotomy (17%), cardiac allograft failure (8%), pulmonary embolism (16%), and acute nonischemic heart failure (25%)...
May 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28433554/catheter-ablation-to-prevent-sudden-cardiac-death
#9
Josef Kautzner, Petr Peichl
Since ventricular arrhythmias are a common cause of sudden cardiac death (SCD), treatment for ventricular arrhythmias is the target area of interest in research field. Among different means to prevent ventricular arrhythmias, catheter ablation (CA) has emerged as an effective therapeutic method. CA can decrease the likelihood of SCD in the following arrhythmia categories: 1) idiopathic ventricular fibrillation (VF) that is usually triggered by premature ventricular beats originating in the Purkinje fibres; 2) VF in subjects with structural heart disease, especially after myocardial infarction, that is triggered by premature ventricular beats from surviving Purkinje fibres; 3) Brugada syndrome in which modification of an epicardial substrate in the right ventricular outflow tract might be the most promising strategy; 4) recurrent monomorphic ventricular tachycardias in the setting of structural heart disease; 5) ventricular preexcitation in which CA appears to be a method of choice in high risk patients, regardless of the presence or absence of symptoms...
April 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28426774/the-role-of-air-pollution-in-myocardial-remodeling
#10
A M de Oliveira-Fonoff, C Mady, F G Pessoa, K C B Fonseca, V M C Salemi, F Fernandes, P H N Saldiva, F J A Ramires
BACKGROUND: Excessive air pollution in urban environments can impact morbidity and mortality. The authors evaluated the role of particulate matter2.5 (PM2.5) in structural, geometric, and functional remodeling in hearts, using an experimental model of myocardial infarction. METHODS AND FINDINGS: Seventy-five rats were divided into 5 groups: control (CG), CG exposed to PM2.5 pollution (CGP), myocardial infarcted group (MI), infarcted group immediately exposed to pollution (IGP-I), and infarcted group previously exposed to pollution and kept exposed after infarction (IGP-II)...
2017: PloS One
https://www.readbyqxmd.com/read/28416983/local-conduction-during-acute-myocardial-infarction-in-rats-interplay-between-central-sympathetic-activation-and-endothelin
#11
Theofilos M Kolettis, Marianthi Kontonika, Vassilios La Rocca, Antonios P Vlahos, Giannis G Baltogiannis, Zenon S Kyriakides
We investigated the effects of autonomic dysfunction and endothelin on local conduction and arrhythmogenesis during myocardial infarction. We recorded ventricular tachyarrhythmias, monophasic action potentials, and activation sequences in wild-type and ETB-deficient rats displaying high endothelin levels. Central sympathetic inputs were examined after clonidine administration. Clonidine mitigated early and delayed arrhythmogenesis in ETB-deficient and wild-type rats, respectively. The right ventricular activation delay increased in clonidine-treated ETB-deficient rats and slightly decreased in wild-type rats...
April 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28396806/ventricular-septal-dissection-complicating-inferior-wall-myocardial-infarction
#12
Lindsey Kalvin, Rayan Yousefzai, Bijoy K Khandheria, Timothy E Paterick, Khawaja Afzal Ammar
Postmyocardial infarction ventricular septal defect is an increasingly rare mechanical complication of acute myocardial infarction. We present a case of acute myocardial infarction from right coronary artery occlusion that developed hypotension and systolic murmur 12 hours after successful percutaneous coronary intervention. Although preoperative imaging suggested a large ventricular septal defect and a pseudoaneurysm, intraoperative findings concluded a serpiginous dissection of the ventricular septum. The imaging technicalities are discussed...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28366607/influence-about-the-flow-of-distal-branch-after-intervention-of-the-right-coronary-artery-chronic-total-occlusion
#13
Hsiu-Yu Fang, Chiung-Jen Wu, Chih-Yuan Fang, Wei-Chieh Lee
OBJECTIVE: Limited data are available for the clinical outcomes after the recanalization of right coronary artery (RCA) chronic total occlusion (CTO). The study aims to assess the clinical outcomes in the antegrade flow of the distal branch after successful RCA CTO percutaneous coronary intervention (PCI). METHODS: Between January 2002 and December 2012, 538 patients who underwent RCA CTO PCI were enrolled. The clinical outcomes as myocardial infarction (MI), target vessel revascularization, cardiac death, major adverse cardiac events, and all-cause mortality, were compared to the antegrade flow of distal branch after successful RCA CTO PCI...
March 22, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28364177/magnetic-resonance-imaging-for-characterizing-myocardial-diseases
#14
REVIEW
Maythem Saeed, Hui Liu, Chang-Hong Liang, Mark W Wilson
The National Institute of Health defined cardiomyopathy as diseases of the heart muscle. These myocardial diseases have different etiology, structure and treatment. This review highlights the key imaging features of different myocardial diseases. It provides information on myocardial structure/orientation, perfusion, function and viability in diseases related to cardiomyopathy. The standard cardiac magnetic resonance imaging (MRI) sequences can reveal insight on left ventricular (LV) mass, volumes and regional contractile function in all types of cardiomyopathy diseases...
March 31, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28303997/right-ventricular-involvement-in-patients-with-inferior-myocardial-infarction-correlation-of-electrocardiographic-findings-with-echocardiography-data
#15
Sumbul Javed, Ali Raza Rajani, Pushparani Govindaswamy, Ghazi Ahmed Radaideh, Harb Ahmed Abubaraka, Tariq Ilyas Qureshi, Hassaan Bin Arshad
OBJECTIVE: To determine the right ventricular involvement in patients with inferior myocardial infarction by echocardiography in relation to electrocardiographic findings. METHODS: This observational, prospective study was conducted at Rashid Hospital, Dubai, the United Arab Emirates, from January to September 2013, and comprised patients with inferior myocardial infarction. All patients aged above 18 years were included. Right ventricular myocardial infarction was defined by the electrocardiographic criteria of > 1mV ST elevation in V4R-V5R leads...
March 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28298620/refractory-cardiogenic-shock-from-right-ventricular-infarction-successfully-managed-with-inhaled-epoprostenol
#16
Natalie Held, Nathaniel Little, Mori J Krantz, Brian L Stauffer
BACKGROUND Recognition and appropriate management of right ventricular (RV) infarction is essential, as RV injury increases mortality and substantially alters management during acute coronary syndrome. We report a case of RV infarction presenting with new right bundle branch block (RBBB), and therapeutic use of inhaled epoprostenol to reduce RV afterload and augment cardiac output during refractory cardiogenic shock. CASE REPORT A 53-year-old male presented to our institution in ventricular fibrillation with subsequent development of RBBB in the setting of proximal right coronary artery occlusion...
March 16, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28290839/-ischemic-heart-disease-focus-on-acute-infarction-of-the-right-ventricular-myocardium
#17
B A Akbalaeva, T A Batyraliev, D V Fettzer, B A Sidorenko
Ischemic heart disease and acute myocardial infarction (AMI) in particular remain widely spread and contribute seriously in total mortality of population. This literature review is devoted to the right ventricular (RV) AMI as the least studied problem of contemporary cardiology. We present here description of specific characteristics of blood supply to ventricles of the heart, clinical picture, diagnostic criteria and prognosis of RV infarction. We also present current strategy of management of patients with RV AMI including early revascularization with the help of percutaneous coronary intervention...
January 2017: Kardiologiia
https://www.readbyqxmd.com/read/28264596/prolonged-intra-myocardial-growth-hormone-administration-ameliorates-post-infarction-electrophysiologic-remodeling-in-rats
#18
Marianthi Kontonika, Eleonora Barka, Maria Roumpi, Vassilios La Rocca, Panagiotis Lekkas, Evangelos P Daskalopoulos, Agapi D Vilaeti, Giannis G Baltogiannis, Antonios P Vlahos, Simeon Agathopoulos, Theofilos M Kolettis
Experimental studies indicate improved ventricular function after treatment with growth hormone (GH) post-myocardial infarction, but its effect on arrhythmogenesis is unknown. Here, we assessed the medium-term electrophysiologic remodeling after intra-myocardial GH administration in (n = 33) rats. GH was released from an alginate scaffold, injected around the ischemic myocardium after coronary ligation. Two weeks thereafter, ventricular tachyarrhythmias were induced by programmed electrical stimulation...
March 6, 2017: Growth Factors
https://www.readbyqxmd.com/read/28249888/takotsubo-cardiomyopathy-secondary-to-spontaneous-right-sided-pneumothorax
#19
Mouhanna Abu Ghanimeh, Bhaskar Bhardwaj, Abdelrahman Aly, Paramdeep Baweja
Takotsubo cardiomyopathy (TCM) is a unique type of cardiomyopathy characterised by left ventricular systolic dysfunction in association with stressful conditions. Patients with this condition usually present with chest pain and dyspnoea, and the presentation can mimic acute coronary syndrome. We present a case of a woman aged 58 years who presented with progressive dyspnoea and cough. Her initial evaluation was suggestive of acute myocardial infarction with elevated serum troponin T and ST segment elevation...
March 1, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28241751/time-resolved-tracking-of-the-atrioventricular-plane-displacement-in-cardiovascular-magnetic-resonance-cmr-images
#20
Felicia Seemann, Ulrika Pahlm, Katarina Steding-Ehrenborg, Ellen Ostenfeld, David Erlinge, Jean-Luc Dubois-Rande, Svend Eggert Jensen, Dan Atar, Håkan Arheden, Marcus Carlsson, Einar Heiberg
BACKGROUND: Atrioventricular plane displacement (AVPD) is an indicator for systolic and diastolic function and accounts for 60% of the left ventricular, and 80% of the right ventricular stroke volume. AVPD is commonly measured clinically in echocardiography as mitral and tricuspid annular plane systolic excursion (MAPSE and TAPSE), but has not been applied widely in cardiovascular magnetic resonance (CMR). To date, there is no robust automatic algorithm available that allows the AVPD to be measured clinically in CMR with input in a single timeframe...
February 28, 2017: BMC Medical Imaging
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