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Systolic anterior motion

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https://www.readbyqxmd.com/read/28536896/helical-distribution-of-hypertrophy-in-patients-with-hypertrophic-cardiomyopathy-prevalence-and-clinical-implications
#1
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
#2
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
#3
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...
May 16, 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
#4
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...
May 12, 2017: Echocardiography
https://www.readbyqxmd.com/read/28400922/pheochromocytoma-and-stress-cardiomyopathy-insight-into-pathogenesis
#5
Sahil Agrawal, Jamshid Shirani, Lohit Garg, Amitoj Singh, Santo Longo, Angelita Longo, Mark Fegley, Lauren Stone, Muhammad Razavi, Nicoleta Radoianu, Sudip Nanda
AIM: To investigate the occurrence of cardiomyopathy (CMP) in a cohort of patients with histologically proven pheochromocytoma (pheo), and to determine if catecholamine excess was causative of the left ventricular (LV) dysfunction. METHODS: A retrospective chart review spanning years 1998 through 2014 was undertaken and patients with a diagnosis of pheo confirmed with histopathologic examination were included. Presenting electrocardiograms and cardiac imaging studies were reviewed...
March 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28378353/reduction-of-left-ventricular-outflow-tract-obstruction-with-transcatheter-mitral-valve-repair
#6
Megan Coylewright, Elizabeth S O'Neill, John F Robb, Jock N McCullough, Cassie M Tighe, Joshua M Callahan, Timothy A Beaver
Many patients with severe mitral regurgitation cannot undergo conventional mitral valve surgery due to prohibitive surgical risk and are candidates for transcatheter repair with an edge-to-edge technique. Prior reports suggest efficacy with this approach for mitral regurgitation due to hypertrophic cardiomyopathy with left ventricular outflow obstruction. We present a case report of transcatheter mitral valve repair for posterior leaflet prolapse with concomitant left ventricular outflow tract obstruction due to systolic anterior motion of the mitral valve in the absence of hypertrophic cardiomyopathy...
April 2017: Echocardiography
https://www.readbyqxmd.com/read/28327475/free-breathing-black-blood-cine-fast-spin-echo-imaging-for-measuring-abdominal-aortic-wall-distensibility-a-feasibility-study
#7
Jyh-Miin Lin, Andrew J Patterson, Tzu-Cheng Chao, Chengcheng Zhu, Hing-Chiu Chang, Jason Mendes, Hsiao-Wen Chung, Jonathan H Gillard, Martin J Graves
The paper reports a free-breathing black-blood CINE fast-spin echo (FSE) technique for measuring abdominal aortic wall motion. The free-breathing CINE FSE includes the following MR techniques: (1) variable-density sampling with fast iterative reconstruction; (2) inner-volume imaging; and (3) a blood-suppression preparation pulse. The proposed technique was evaluated in eight healthy subjects. The inner-volume imaging significantly reduced the intraluminal artifacts of respiratory motion (p  =  0.015)...
May 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28315014/association-of-native-t1-times-with-biventricular-function-and-hemodynamics-in-precapillary-pulmonary-hypertension
#8
Yin Yin Chen, Hong Yun, Hang Jin, De Hong Kong, Yu Liang Long, Cai Xia Fu, Shan Yang, Meng Su Zeng
In precapillary pulmonary hypertension (PH) patients, we sought to (1) investigate the relationship between ventricular insertion point (VIP) T1 times, hemodynamic parameters, and biventricular function, and (2) determine the predictors of anterior and inferior VIP T1 time. Twenty-two patients with precapillary PH underwent 1.5-T cardiac MR, right heart catheterization (RHC), and echocardiography. A group of 10 healthy age- and sex-matched volunteers served as controls. Biventricular function, morphology and mass were obtained from short-axis cine images...
March 17, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28290177/left-ventricular-outflow-tract-obstruction-and-systolic-anterior-motion-of-the-mitral-valve-in-the-absence-of-hypertrophic-cardiomyopathy
#9
Natasha Aleksova, Alice Wang, Christopher A Glover, Thierry Mesana, Girish Dwivedi
Systolic anterior motion of the mitral valve is a mechanism for the development of left ventricular outflow tract (LVOT) obstruction. While often associated with left ventricular hypertrophy (LVH), a case is reported of symptomatic LVOT obstruction due to intrinsic mitral valve pathology in the absence of hypertrophy or cardiomyopathy. This case highlights the importance of recognizing isolated mitral valve pathology as a treatable cause of LVOT obstruction.
November 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28275421/treating-a-structural-heart-disease-using-a-non-structural-approach-role-of-cardiac-pacing-in-hypertrophic-cardiomyopathy
#10
Bernard Benjamin P Albano, Erdie C Fadreguilan, Jeffrey M Chua, James Ho, Ana Beatriz Medrano
Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiovascular disease characterized by a thickened non-dilated ventricle in the absence of another cardiac or systemic condition. Its most important hemodynamic consequence is left ventricular outflow tract (LVOT) obstruction. The primary management strategy of this condition is surgical septal myectomy, but an acceptable alternative treatment in patients who are not suitable for (or who refuse) surgery is alcohol septal ablation (ASA). However, in patients with unfavorable coronary anatomy which precludes ASA (i...
February 2017: Cardiology Research
https://www.readbyqxmd.com/read/28247219/concomitant-septal-myectomy-during-minimally-invasive-aortic-valve-replacement-through-a-right-mini-thoracotomy-for-the-treatment-of-aortic-stenosis-with-systolic-anterior-motion-of-the-mitral-valve
#11
Toshinori Totsugawa, Kota Suzuki, Arudo Hiraoka, Kentaro Tamura, Hidenori Yoshitaka, Taichi Sakaguchi
This paper reports concomitant septal myectomy during minimally invasive aortic valve replacement through a right mini-thoracotomy. A 76-year-old woman was diagnosed as having aortic stenosis with systolic anterior motion of the mitral valve. The bulging septum was exposed by pulling up a traction suture placed at the annulus of the right coronary cusp; the anomalous chordae and muscle bundles attached to the septum were also resected. By setting an adequate intercostal thoracotomy and placing a traction suture, concomitant myectomy was safely performed even through a right mini-thoracotomy...
March 1, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28240432/two-dimensional-strain-echocardiography-technology-for-evaluation-of-myocardial-strain-in-swimming-athletes-after-high-intensity-exercise
#12
Chen Liang, Yun Ma, Can Gao, Jianhong Zhang, Min Yang, Gen Chen, Shan Fu, Tiangang Zhu
OBJECTIVE: The aim of this study was to investigate the change in myocardial strain in swimming athletes before and after high-intensity exercise using two-dimensional strain echocardiography (2DSE) technology. METHODS: To assess whether the local and overall myocardial function and myocardial injury are accurately measured using 2DSE technology, 15 swimming athletes were selected as research objects. We applied 2DSE technology to track the 2D ultrasound images of the apical four chambers, the apical two chambers, and the apical long axis before and after high-intensity, increasing-load exercise...
February 2017: Echocardiography
https://www.readbyqxmd.com/read/28203542/robotic-trans-atrial-and-trans-mitral-ventricular-septal-resection
#13
REVIEW
W Randolph Chitwood
Localized ventricular septal hypertrophy, also known as idiopathic hypertrophic subaortic stenosis or idiopathic hypertrophic subaortic septal obstruction (IHSS), can create severe ventricular outflow obstruction. This often results in a high sub-aortic pressure gradient with potentially lethal symptoms. In 1960, Braunwald described the hemodynamic characteristics of IHSS, and thereafter, Morrow developed a trans-aortic approach to resect a large part of the ventricular septum, enlarging the outflow tract. The Morrow operation has remained the gold standard for surgically treating this pathology...
January 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28127135/st-elevation-acute-myocardial-infarction-due-to-arterial-thrombosis-in-a-29-year-old-woman-with-normal-coronary-arteries
#14
Eneida Male, Talitha Morton, Adam Farber, Jeffrey Michel
Acute myocardial infarction (AMI) is rare in young adults. We present a case of a 29-year-old black woman who presented with an acute onset of chest pain while sleeping. Anterior wall ST-elevation AMI was diagnosed based on clinical presentation, electrocardiographic findings, and elevated cardiac biomarkers. Coronary angiography revealed a totally occluded proximal left anterior descending artery. The obstructing lesion, thrombus, was removed. There was no evidence of atherosclerotic disease or dissection...
January 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28106968/robotic-mitral-repair-with-sliding-leaflet-valvuloplasty-and-remodelling-partial-annuloplasty
#15
Lawrence Wei, Vinay Badhwar, Takashi Murashita, Giuseppe Raffa
Complex pathoanatomy that requires posterior leaflet height reduction can be accomplished robotically with excellent surgical outcomes. We report the technique of robotic sliding leaflet valvuloplasty in cases of severe myxomatous degenerative disease with elevated predictive risk of systolic anterior motion.
September 28, 2016: Multimedia Manual of Cardiothoracic Surgery: MMCTS
https://www.readbyqxmd.com/read/28104197/simplified-mitral-valve-repair-in-pediatric-patients-with-connective-tissue-disorders
#16
Luca A Vricella, William A Ravekes, Eloisa Arbustini, Robert D B Jaquiss, Constantine Mavroudis, Harry C Dietz, Marshall L Jacobs, Narutoshi Hibino, Duke E Cameron
BACKGROUND: In pediatric patients with connective tissue disorders (CTDs), early cardiac presentation often involves severe mitral regurgitation (MR) associated with severe bileaflet prolapse and, less frequently, aortic root enlargement. We adopted a simplified repair to address MR and prevent systolic anterior motion (SAM) in this unique group of patients. MATERIALS AND METHODS: Retrospective review of clinical and echocardiographic data of all pediatric patients (age < 18 years) with CTD and MR undergoing simplified repair at 3 institutions (2000-2014)...
February 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28096824/extended-myectomy-in-the-treatment-of-patients-with-hypertrophic-obstructive-cardiomyopathy
#17
Mateusz Kuć, Piotr Kołsut, Jacek Różański, Maciej Dąbrowski, Mariusz Kłopotowski, Magda Kumor, Mirosław Kowalski, Natalia Kopyłowska, Jarosław Kuriata, Mariusz Kuśmierczyk
INTRODUCTION: Partial resection of the septal muscle is a well-established and effective method of surgical treatment for patients with hypertrophic obstructive cardiomyopathy (HOCM). The procedure is characterized by a low operative mortality rate and long-term clinical improvement that has been confirmed in numerous publications. Mitral insufficiency in patients with HOCM is mostly functional due to the effect of systolic anterior motion (SAM). AIM: To present the early results of surgical treatment provided to HOCM patients and to compare the effectiveness of two surgical procedures: isolated myectomy and myectomy combined with mitral valve replacement...
December 2016: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28095388/the-use-of-mitraclip-for-symptomatic-patients-with-hypertrophic-obstructive-cardiomyopathy
#18
Felix Thomas, Florian Rader, Robert J Siegel
OBJECTIVES: Current nonpharmacological therapies for symptomatic patients with hypertrophic obstructive cardiomyopathy (HOCM), including septal myectomy and alcohol septal ablation (ASA), carry significant risks for serious cardiac conduction abnormalities. We present a review of the currently available published data regarding the novel use of the relatively low-risk MitraClip® system in the treatment of symptomatic patients. METHODS: Data were collected from 4 separate studies on the use of the MitraClip on 15 symptomatic HOCM patients with systolic anterior motion (SAM) of the mitral valve apparatus...
2017: Cardiology
https://www.readbyqxmd.com/read/28079765/early-recurrence-of-tako-tsubo-cardiomyopathy-in-an-elderly-woman-with-amyotrophic-lateral-sclerosis-different-triggers-inducing-different-apical-ballooning-patterns
#19
Francesco Santoro, Riccardo Ieva, Armando Ferraretti, Elena Carapelle, Luisa De Gennaro, Luigi Maria Specchio, Matteo Di Biase, Natale Daniele Brunetti
: We report the case of early recurrence of Tako-Tsubo cardiomyopathy in an elderly woman with amyotrophic lateral sclerosis triggered by different stressors. A first episode with typical apical ballooning was anticipated by an emotional stress; a second, characterized by systolic anterior motion of the mitral valve associated with mitral regurgitation and severe intra-ventricular gradient, was precipitated by surgical stress and hypovolemia. We therefore hypothesize both a possible link between amyotrophic lateral sclerosis and Tako-Tsubo cardiomyopathy, and between different stressors and different Tako-Tsubo patterns...
December 2016: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28040272/myocardial-strain-may-be-useful-in-differentiating-takotsubo-cardiomyopathy-from-left-anterior-descending-coronary-artery-ischemia
#20
LiYing Cai, Karima Addetia, Diego Medvedofsky, Kirk T Spencer
BACKGROUND: Stress-induced cardiomyopathy (SCM) is characterized by transient apical wall motion abnormalities of the left ventricle (LV) in the absence of obstructive coronary artery disease. Although the echocardiographic findings of SCM mimic those of left anterior descending coronary artery ischemia or infarction (LAD), the regional LV wall motion pattern and degree of RV involvement may differ. METHODS: We sought to systematically assess regional LV and RV function with myocardial strain imaging to assess if ventricular involvement may differ between SCM and LAD...
March 1, 2017: International Journal of Cardiology
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