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Systolic anterior motion

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https://www.readbyqxmd.com/read/28962514/ecomment-systolic-anterior-motion-after-mitral-valve-repair-further-considerations
#1
Daniel G W Cave, Layth J S Hendow, Meeriam Kadicheeni
No abstract text is available yet for this article.
October 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28962497/systolic-anterior-motion-after-mitral-valve-repair-a-predictive-computational-model
#2
Paolo Denti, Alberto Pozzoli, Alberto Geretto, Luca Vicentini, Stefania Di Sanzo, Fabrizio Monaco, Martina Crivellari, Nicola Buzzatti, Michele De Bonis, Giovanni La Canna, Alberto Redaelli, Ottavio Alfieri
OBJECTIVES: Systolic anterior motion (SAM) can be an insidious complication after mitral repair. Predicting SAM represents a challenge, even for very experienced mitral valve surgeons. The goal of this pilot work was to illustrate for the first time, a computational software able to calculate and prevent SAM during mitral repair. METHODS: Using MATLAB graphical user interface, a clinical software to predict SAM, we tested the performances of the software on 136 patients with degenerative mitral valves undergoing repair with standard techniques...
October 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28944184/transmitral-myectomy-and-how-to-deal-with-systolic-anterior-motion-sam-in-hypertrophic-obstructive-cardiomyopathy
#3
REVIEW
Sabine Meier, Thilo Noack, Friedrich W Mohr, Joerg Seeburger, Jurgen Passage
No abstract text is available yet for this article.
July 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28944177/isolated-septal-myectomy-for-hypertrophic-obstructive-cardiomyopathy-an-update-on-the-toronto-general-hospital-experience
#4
Rachel D Vanderlaan, Anna Woo, Anthony Ralph-Edwards
BACKGROUND: Isolated septal myectomy is considered the gold standard for refractory left ventricular outflow tract (LVOT) obstruction at centers with dedicated hypertrophic obstructive cardiomyopathy (HOCM) surgeons. In this paper, we provide an update on the Toronto General Hospital (TGH) experience for isolated septal myectomy and comment on the safety and efficacy of myectomy in patients with thin basal septal thickness at our institution. METHODS: We retrospectively reviewed all patients undergoing surgical myectomy at our institution from January 2012 to August 2016...
July 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28944175/long-term-outcome-of-simultaneous-septal-myectomy-and-anterior-mitral-leaflet-retention-plasty-in-hypertrophic-obstructive-cardiomyopathy-the-berlin-experience
#5
Eva Maria Delmo Walter, Mariano Francisco Javier, Roland Hetzer
BACKGROUND: Various surgical strategies designed to relieve left ventricular outflow tract obstruction (LVOTO) and correct mitral regurgitation (MR) in hypertrophic obstructive cardiomyopathy (HOCM) have evolved, yet reports on the long-term outcomes of each technique are scarce. We provide an update on over 20 years' experience at our institution in the standardized surgical treatment of HOCM. METHODS: Between April 1986 and April 2014, 320 cases of endomyocardial resection and 305 septal myectomies were performed at our institution...
July 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28944174/hypertrophic-obstructive-cardiomyopathy-the-leipzig-experience
#6
Jawad Khalil, Michael Kuehl, Pirose Davierwala, Friedrich Wilhelm Mohr, Martin Misfeld
BACKGROUND: Management of hypertrophic obstructive cardiomyopathy (HOCM) has evolved considerably over the last fifty years, and includes medical treatment as well as septal myectomy (SM) to relief symptoms caused by left ventricular outflow tract obstruction (LVOTO). We report the Leipzig Heart Center experience in the surgical management of patients with HOCM. METHODS: We collected data from all patient treated surgically with a myectomy for LVOTO in patients with HOCM between 1997 and 2016...
July 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28944173/hypertrophic-obstructive-cardiomyopathy-the-mayo-clinic-experience
#7
Kunal D Kotkar, Sameh M Said, Joseph A Dearani, Hartzell V Schaff
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is a primary myocardial disease characterized by left ventricular hypertrophy in the absence of other etiologies. Clinical presentation may vary from asymptomatic to sudden cardiac death. Medical treatment is the first-line therapy for symptomatic patients. Extended left ventricular septal myectomy is the procedure of choice if medical treatment is unsuccessful or intolerable. MAYO CLINIC EXPERIENCE: More than 3,000 patients have had septal myectomy for HCM at the Mayo Clinic (MN, USA) from 1993 to 2016...
July 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28811941/seizure-associated-takotsubo-syndrome-a-rare-combination
#8
Htay Htay Kyi, Nour Aljariri Alhesan, Sunil Upadhaya, Samer Al Hadidi
Takotsubo cardiomyopathy (TC) is increasingly recognized in neurocritical care population especially in postmenopausal females. We are presenting a 61-year-old African American female with past medical history of epilepsy, bipolar disorder, and hypertension who presented with multiple episodes of seizures due to noncompliance with antiepileptic medications. She was on telemetry which showed ST alarm. Electrocardiogram (ECG) was ordered and showed ST elevation in anterolateral leads and troponins were positive...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28801279/-high-frequency-echocardiography-for-assessment-of-regional-wall-motion-abnormality-and-cardiac-function-in-mice-with-myocardial-infarction
#9
Jing Wang, Wei-Jiang Tan, Xiang Li, Gui-Ping Zhang, Jia-Yuan Huang, Xiao-Hong Chen, Qian Lei, Feng-Hua Yang, Ren Huang
OBJECTIVE: To evaluate the value of high-frequency echocardiography in assessing cardiac structure and function in a mouse model of myocardial infarction. METHODS: Twenty-five C57BL/6 mice were randomly divided into sham-operated group (n=10) and myocardial infarction model group (n=15) established by ligation of the left anterior descending artery. The cardiac structure, regional wall motion and cardiac function of mice were examined with pulsed wave Doppler (PWD), tissue Doppler imaging (TDI), EKV and M-mode echocardiography 3 days before and at 1 week after the operation...
August 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28754098/longitudinal-shortening-remains-the-principal-component-of-left-ventricular-pumping-in-patients-with-chronic-myocardial-infarction-even-when-the-absolute-atrioventricular-plane-displacement-is-decreased
#10
Daniel Asgeirsson, Erik Hedström, Jonas Jögi, Ulrika Pahlm, Katarina Steding-Ehrenborg, Henrik Engblom, Håkan Arheden, Marcus Carlsson
BACKGROUND: The majority (60%) of left ventricular (LV) stroke volume (SV) is generated by longitudinal shortening causing apical atrioventricular plane displacement (AVPD) in systole. The remaining SV is caused by radial inward motion of the epicardium both in the septal and the lateral wall. We aimed to determine if these longitudinal, septal and lateral contributions to LVSV are changed in patients with chronic myocardial infarction (MI). METHODS: Patients with a chronic (>3 months) ST-elevation MI in the left anterior descending (LAD, n = 20) or right coronary artery (RCA, n = 16) and healthy controls (n = 20) were examined with cardiovascular magnetic resonance (CMR)...
July 28, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28752550/four-dimensional-echocardiography-area-strain-combined-with-exercise-stress-echocardiography-to-evaluate-left-ventricular-regional-systolic-function-in-patients-with-mild-single-vessel-coronary-artery-stenosis
#11
Yan Deng, Long Peng, Yuan-Yuan Liu, Li-Xue Yin, Chun-Mei Li, Yi Wang, Li Rao
BACKGROUND: The aim of this prospective study was to assess the diagnosis value of four-dimensional echocardiography area strain (AS) combined with exercise stress echocardiography to evaluate left ventricular regional systolic function in patients with mild single vessel coronary artery stenosis. METHODS: Based on treadmill exercise load status, two-dimensional conventional echocardiography and four-dimensional echocardiography area strain were performed on patients suspected coronary artery disease before coronary angiogram...
July 28, 2017: Echocardiography
https://www.readbyqxmd.com/read/28683992/assessment-of-mitral-valve-repair-with-exercise-echocardiography-artificial-chordae-vs-leaflet-resection
#12
COMPARATIVE STUDY
Sigurdur Ragnarsson, Johan Sjögren, Martin Stagmo, Per Wierup, Shahab Nozohoor
Mitral valve (MV) repair with artificial chordae (AC) or leaflet resection (LR) is associated with good hemodynamics at rest. The aim of this study was to compare these techniques in terms of exercise capacity and echocardiographic parameters of hemodynamics at rest and peak exercise. We conducted a study in 2015 of 56 patients, who had undergone surgery for degenerative posterior mitral leaflet prolapse between 2005 and 2014 using either AC (n = 24) or LR (n = 32). Clinical data were collected, exercise capacity was measured, and resting echocardiography and peak exercise echocardiography were performed...
April 2017: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28681495/underappreciated-occurrence-of-discrete-subaortic-membranes-producing-left-ventricular-outflow-obstruction-in-hypertrophic-cardiomyopathy
#13
Muhil Kannappan, Barry J Maron, Hassan Rastegar, Natesa G Pandian, Martin S Maron, Ethan J Rowin
Subaortic obstruction due to systolic anterior motion (SAM) of the mitral valve with ventricular septal contact is a major cause of progressive heart failure symptoms in patients with hypertrophic cardiomyopathy (HCM). However, we have recently observed a unique, but not uncommon subgroup of HCM patients with outflow tract obstruction due only to discrete subaortic membrane or who have a membrane in addition to SAM-septal contact. HCM patients with subaortic membranes may be at increased risk for developing progressive heart failure symptoms...
August 2017: Echocardiography
https://www.readbyqxmd.com/read/28670388/left-ventricular-myocardial-strain-in-ventricular-arrhythmia-without-structural-heart-disease-using-cardiac-magnetic-resonance
#14
Xuepei Tang, Sisi Yu, Yaohan Yu, Haibo Ren, Shuhao Li, Li Zhou, Zhen Yang, Hailong Wu, Wei Zhou, Lianggeng Gong
Ventricular arrhythmia (VA) in structurally normal heart is considered as benign. However, these arrhythmias have been recently reported to induce left ventricular (LV) dysfunction. Up to now, there is no efficacious method to detect abnormal myocardial systolic function in VA patients. Therefore, in the current study, we used cardiac magnetic resonance feature tracking (CMR-FT) on balanced steady state free precision (SSFP) cine images to investigate LV myocardial strain in 42 VA patients without known heart disease as well as in 29 normal volunteers...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28666934/flow-energy-loss-evaluation-in-a-systolic-anterior-motion-case-after-the-ross-procedure
#15
Koichi Akiyama, Yoshifumi Naito, Mao Kinoshita, Maki Ishii, Yasufumi Nakajima, Keiichi Itatani, Takako Miyazaki, Masaaki Yamagishi, Hitoshi Yaku, Teiji Sawa
No abstract text is available yet for this article.
March 6, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28648775/systolic-anterior-motion-of-the-mitral-valve-with-left-ventricular-outflow-tract-obstruction-a-rare-cause-of-hypotension-after-lung-transplantation
#16
Thomas Hertel, Jennifer M Banayan, Mark A Chaney, Vera von Dossow, Richa Dhawan
No abstract text is available yet for this article.
October 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28536896/helical-distribution-of-hypertrophy-in-patients-with-hypertrophic-cardiomyopathy-prevalence-and-clinical-implications
#17
Dafne Viliani, Eduardo Pozo, Norma Aguirre, Alberto Cecconi, María J Olivera, Paloma Caballero, Luis J Jiménez-Borreguero, Fernando Alfonso
Recently a novel pattern of helical distribution of hypertrophy has been described in patients with hypertrophic cardiomyopathy (HCM). Our aim was to determine its prevalence and potential implications in an unselected cohort. One-hundred- and eight consecutive patients diagnosed with HCM by cardiac magnetic resonance (CMR) were included (median clinical follow up of 1718 days). All clinical and complementary test information was prospectively collected. The presence of a helical pattern was assessed by a simple measurement of the maximal left ventricle (LV) wall thickness (LVWT) for each of the 17 classical LV segments and it was classified in one of three types according to its extension...
May 23, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28523177/systolic-anterior-motion-of-the-mitral-valve-the-mechanism-of-postural-hypotension-following-left-intrapericardial-pneumonectomy
#18
Javier D Lasala, January Tsai, Andrea Rodriguez-Restrepo, Scott Michael Atay, Boris Sepesi
Systolic anterior motion (SAM) is defined as displacement of the distal portion of the anterior leaflet of the mitral valve toward the left ventricular outflow tract obstruction. SAM can occur in patients without hypertrophic cardiomyopathy (HOCM) and is a well-recognized cause for unexplained sudden hypotension in perioperative settings. We present a case of persistent orthostatic hypotension caused by SAM following left intrapericardial pneumonectomy and mediastinal lymph node dissection for squamous cell carcinoma of the lung invading intrapericardial portion of the inferior pulmonary vein...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28520945/systolic-anterior-motion-of-the-tricuspid-valve-in-a-patient-with-hypertrophic-obstructive-cardiomyopathy
#19
Emile S Farag, R Nils Planken, S Matthijs Boekholdt, Jolanda Kluin
Hypertrophic cardiomyopathy is a heterogeneous myocardial disease and is characterized by increased left ventricular wall thickness. Left ventricular outflow tract obstruction occurs in up to 70% of patients and is often caused by systolic anterior motion of the mitral valve, a paradoxical phenomenon in which the anterior mitral valve leaflet is pulled into the left ventricular outflow tract during systole. We present the first case of hypertrophic cardiomyopathy with systolic anterior motion of both the mitral and the tricuspid valves and severe hypertrophy of both ventricles...
September 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28497565/transient-left-ventricular-outflow-tract-obstruction-with-systolic-anterior-motion-of-the-mitral-valve-a-stunning-cause
#20
Christiaan L Meuwese, Mohamed Boulaksil, Jeroen van Dijk, Jawed Polad, Huub W Meijburg
Left ventricular outflow tract obstruction (LVOTO) and systolic anterior motion (SAM) of the mitral valve may have various etiologies, of which hypertrophic cardiomyopathy is the most common. More rarely, an acute coronary syndrome, myocardial stunning, and takotsubo cardiomyopathy may give rise to LVOTO and SAM. Here, we present a 70-year-old female patient with a non-ST-elevation acute coronary syndrome treated with percutaneous coronary intervention. Echocardiography the day after, because of dyspnea and hypotension, revealed apical akinesia, LVOTO, and SAM, which proved completely reversible after treatment with a β-blocker and a 2-month follow-up period...
July 2017: Echocardiography
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