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https://www.readbyqxmd.com/read/29667903/posterior-mitral-leaflet-plication-for-hypertrophic-obstructive-cardiomyopathy
#1
Praveen Kerala Varma, Neethu Krishna, Hisham Ahamed, Sujatha Madassery
Anomalies of the mitral valve apparatus in hypertrophic cardiomyopathy are an important cause of systolic anterior motion. Patients with significant residual obstruction due to systolic anterior motion after myectomy and anterior mitral leaflet plication may end up having mitral valve replacement. We describe the case of a 52-year-old man who underwent posterior mitral leaflet plication to correct residual systolic anterior motion after anterior mitral leaflet plication.
January 1, 2018: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/29655822/clinical-spectrum-and-management-of-heart-failure-in-hypertrophic-cardiomyopathy
#2
REVIEW
Barry J Maron, Ethan J Rowin, James E Udelson, Martin S Maron
Heart failure (HF), characterized by excessive exertional dyspnea, is a common complication within the broad clinical spectrum of hypertrophic cardiomyopathy (HCM). HF has become an increasingly prominent management issue with the reduction in sudden deaths due to use of implantable defibrillators in this disease. Exertional dyspnea ranges in severity from mild to severe (New York Heart Association functional classes II to IV) and not uncommonly becomes refractory to medical management, leading to progressive disability, but largely in the absence of pulmonary congestion and volume overload requiring hospitalization...
April 5, 2018: JACC. Heart Failure
https://www.readbyqxmd.com/read/29642694/integrated-quadruple-stress-echocardiography
#3
Eugenio Picano, Doralisa Morrone, Maria C Scali, Alda Huqi, Katia Coviello, Quirino Ciampi
Stress Echocardiography (SE) is an established diagnostic technique. For 40 years, the cornerstone of the technique has been the detection of regional wall motion abnormalities (RWMA), due to the underlying physiologically-relevant epicardial coronary artery stenosis. In the last decade, three new parameters (more objective than RWMA) have shown the potential to integrate and comple- ment RWMA: 1- B-lines, also known as ultrasound lung comets, as a marker of extra-vascular lung water, measured using lung ultrasound with the 4-site simplified scan symmetrically of the antero- lateral thorax on the third intercostal space, from mid-axillary to anterior axillary and mid- clavicular line; 2-left ventricular contractile reserve (LVCR), assessed as the peak stress/rest ratio of left ventricular force, also known as elastance (systolic arterial pressure by cuff sphygmomanome- ter/end-systolic volume from 2D echocardiography); 3- coronary flow velocity reserve (CFVR) on left anterior descending coronary artery, calculated as peak stress/rest ratio of diastolic peak flow velocity assessed using pulsed-wave Doppler...
April 11, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29616461/management-of-systolic-anterior-motion-of-the-mitral-valve-a-mechanism-based-approach
#4
REVIEW
Susumu Manabe, Hitoshi Kasegawa, Hirokuni Arai, Shuichiro Takanashi
Although the mechanism of systolic anterior motion (SAM) of the mitral valve is unknown, it is known to have a multifactorial pathophysiology. Echocardiographic analysis of the mitral leaflet revealed the step-wise progression of SAM, and intraventricular flow analysis revealed the contribution of drag force generated by the misled flow below the posterior leaflet. Although several diverse clinical features of SAM are already known, some key features need to be abstracted from among them to understand the regulation of SAM establishment...
April 3, 2018: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29602755/pathoanatomic-findings-and-treatment-during-hypertrophic-obstructive-cardiomyopathy-surgery-the-role-of-mitral-valve
#5
Giuseppe M Raffa, Giuseppe Romano, Marco Turrisi, Marco Morsolini, Giovanni Gentile, Sergio Sciacca, Alessandro Armaro, Vincenzo Stringi, Gabriella Mattiucci, Serena Magro, Fabiola Cosentino, Francesco Clemenza, Michele Pilato
BACKGROUND: To assess the role of the mitral valve apparatus (leaflets, chordae and papillary muscles, PM) in left ventricle outflow tract (LVOT) obstruction, and results of the surgical treatment for hypertrophic obstructive cardiomyopathy (HOCM). METHODS: Twenty-eight consecutive patients (58±11years, 53% female) undergoing HOCM surgery from 2007 to 2016 at our institute were retrospectively reviewed. Endpoints included the involvement of the mitral valve in LVOT obstruction, mortality, and changes in clinical and echocardiographic characteristics after HOCM surgery...
February 14, 2018: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29551091/evaluation-of-skeletal-muscle-microvascular-perfusion-of-lower-extremities-by-cardiovascular-magnetic-resonance-arterial-spin-labeling-blood-oxygenation-level-dependent-and-intravoxel-incoherent-motion-techniques
#6
Shiteng Suo, Lan Zhang, Hui Tang, Qihong Ni, Suqin Li, Haimin Mao, Xiangyu Liu, Shengyun He, Jianxun Qu, Qing Lu, Jianrong Xu
BACKGROUND: Noninvasive cardiovascular magnetic resonance (CMR) techniques including arterial spin labeling (ASL), blood oxygenation level-dependent (BOLD), and intravoxel incoherent motion (IVIM), are capable of measuring tissue perfusion-related parameters. We sought to evaluate and compare these three CMR techniques in characterizing skeletal muscle perfusion in lower extremities and to investigate their abilities to diagnose and assess the severity of peripheral arterial disease (PAD)...
March 19, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29549506/minimally-invasive-trans-mitral-septal-myectomy-for-diffuse-type-hypertrophic-obstructive-cardiomyopathy
#7
Taichi Sakaguchi, Toshinori Totsugawa, Kentaro Tamura, Arudo Hiraoka, Genta Chikazawa, Hidenori Yoshitaka
OBJECTIVE: Despite excellent long-term results reported for a trans-aortic septal myectomy for hypertrophic obstructive cardiomyopathy (HOCM), surgery for patients with diffuse hypertrophy is very challenging. In addition, a left ventricular outflow obstruction is often aggravated by an abnormal mitral valve and subvalvular apparatus. METHODS: We performed video-assisted minimally invasive trans-mitral septal myectomy procedures in 3 patients with diffuse-type HOCM, who were highly symptomatic despite maximal medical therapy...
March 16, 2018: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29547941/re-repair-of-the-failed-mitral-valve-insights-into-aetiology-and-surgical-management
#8
Gaby Aphram, Laurent De Kerchove, Stefano Mastrobuoni, Emiliano Navarra, Silvia Solari, Saadallah Tamer, Jerome Baert, Alain Poncelet, Jean Rubay, Parla Astarci, Philippe Noirhomme, Gebrine El Khoury
OBJECTIVES: Mitral valve (MV) repair is the gold standard for treatment of degenerative mitral regurgitation. A variety of surgical techniques allow surgeons to achieve a high rate of MV repair even with MV diseases of other aetiologies. However, a certain number of repairs fail over time. The aim of this study was to review our single-centre experience of MV re-repair and analyse the mode of repair failure, re-repair safety and efficiency in relation to the initial aetiology. METHODS: Between 1997 and 2015, 91 patients underwent redo MV re-repair...
March 14, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29536325/precision-of-regional-wall-motion-estimates-from-ultra-low-dose-cardiac-ct-using-squeez
#9
Amir Pourmorteza, Noemie Keller, Richard Chen, Albert Lardo, Henry Halperin, Marcus Y Chen, Elliot McVeigh
Resting regional wall motion abnormality (RWMA) has significant prognostic value beyond the findings of computed tomography (CT) coronary angiography. Stretch quantification of endocardial engraved zones (SQUEEZ) has been proposed as a measure of regional cardiac function. The purpose of the work reported here was to determine the effect of lowering the radiation dose on the precision of automatic SQUEEZ assessments of RWMA. Chronic myocardial infarction was created by a 2-h occlusion of the left anterior descending coronary artery in 10 swine (heart rates 80-100, ejection fraction 25-57%)...
March 13, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29531881/association-of-hypertrophic-obstructive-cardiomyopathy-with-rheumatoid-arthritis
#10
Mustafa Dawood, Noman Lateef, Abubakar Tauseef, Janki Patel
Our article refers to a 50-year-old woman with previously diagnosed rheumatoid arthritis (RA) who presented with symptoms of dyspnea on exertion and dizziness. An echocardiogram revealed a 17-mm asymmetric interventricular septum hypertrophy and systolic anterior motion of the anterior mitral valve leaflet. Association of hypertrophic obstructive cardiomyopathy (HCM) with connective tissue diseases has been well documented. For RA the human leukocyte antigen (HLA) system, particularly HLA-DR4, may possibly be a link between the two entities, as it is associated with both RA and HCM...
January 5, 2018: Curēus
https://www.readbyqxmd.com/read/29479008/morphological-determinants-of-obstructive-hypertrophic-cardiomyopathy-obtained-using-echocardiography
#11
Ikumi Nara, Takako Iino, Hiroyuki Watanabe, Wakana Sato, Kumiko Watanabe, Mai Shimbo, Yuri Umeta, Hiroshi Ito
The morphological determinants of left ventricular outflow tract (LVOT) obstruction in hypertrophic cardiomyopathy (HCM) are not completely understood. We aimed to identify the anatomical risks of the obstruction using echocardiography.Fifty patients with untreated HCM were classified into two groups: those with LVOT pressure gradient (LVOTPG) ≥ 30 mmHg (obstructive HCM [HOCM] group) and those with LVOTPG < 30 mmHg (HNCM group). The echocardiographic morphological variables were analyzed to determine whether they were predictive of LVOT obstruction...
February 23, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29466869/patient-specific-ct-based-3d-passive-fsi-model-for-left-ventricle-in-hypertrophic-obstructive-cardiomyopathy
#12
Long Deng, Xueying Huang, Chun Yang, Yunhu Song, Dalin Tang
Left ventricular outflow tract obstruction is observed in 70% of patients with hypertrophic cardiomyopathy, which occurs in about 1 of every 500 adults in the general population. It has been widely believed that the motion of the mitral valve, in particular, its systolic anterior motion (SAM), attributes significantly to such obstruction. For a better understanding of the mitral valve motion, a 3D patient-specific fluid-structure interaction model of the left ventricle from a patient with hypertrophic obstructive cardiomyopathy based on computed tomography (CT) scan images was proposed in this study...
February 21, 2018: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/29398384/ultra-short-acting-%C3%AE-blockers-esmolol-and-landiolol-in-the-perioperative-period-and-in-critically-ill-patients
#13
REVIEW
Ricardo Poveda-Jaramillo, Fabrizio Monaco, Alberto Zangrillo, Giovanni Landoni
β-Blockers are useful drugs in several clinical cardiologic scenarios. Their use in the perioperative period and in critically ill patients is increasing, but their effect on clinically relevant outcomes remains controversial. Long-acting β-blockers can have detrimental effects that are difficult to be counteracted in these settings. The authors describe the possible clinical uses of ultra-short-acting β-blockers (esmolol and landiolol) in the perioperative period and in critically ill patients because these drugs have the beneficial effects of β-blockers, but do not have the detrimental effects of long-acting agents...
November 23, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29398378/systolic-anterior-motion-of-the-mitral-valve-during-pulmonary-endarterectomy-in-a-patient-with-chronic-thromboembolic-pulmonary-hypertension-a-case-report
#14
Koji Hoshino, Koichi Takita, Masami Demura, Tomonori Kubo, Yuji Morimoto
No abstract text is available yet for this article.
June 16, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29371788/awareness-of-systolic-anterior-motion-in-different-conditions
#15
Monish Raut, Arun Maheshwari, Baryon Swain
Perioperative echocardiography, especially transesophageal echocardiography, is of paramount importance in evaluating and managing refractory hypotension, a potential cause of which is systolic anterior motion (SAM) of anterior mitral leaflet. Dynamically moving anterior mitral valve leaflet towards the left ventricular outflow tract (LVOT) is described as SAM. Although SAM was initially observed in patients with hypertrophic cardiomyopathy, it can also be seen in patients with complex dynamic anatomy of the left ventricle...
2018: Clinical Medicine Insights. Cardiology
https://www.readbyqxmd.com/read/29370363/second-cross-clamping-after-mitral-valve-repair-for-degenerative-disease-in-contemporary-practice
#16
Michele De Bonis, Elisabetta Lapenna, Ilaria Giambuzzi, Roberta Meneghin, Giovanni Affronti, Federico Pappalardo, Alessandro Castiglioni, Cinzia Trumello, Nicola Buzzatti, Andrea Giacomini, Marcello Raimondi Lucchetti, Ottavio Alfieri
OBJECTIVES: Scanty data are available on 'second cross-clamping' following mitral valve repair in contemporary practice. The aim of this study was to evaluate the incidence, causes and outcomes of this event in patients referred for mitral repair for severe degenerative mitral regurgitation (MR). METHODS: The study population included 2318 patients with severe degenerative MR referred for mitral repair. A second cross-clamping was performed in 94 (4%) patients. Causes of the second cross-clamping, revising repair procedures, immediate echocardiographic outcomes and postoperative course were assessed and compared with the 'single cross-clamping cases' (2224 patients used as control)...
January 22, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29359402/incidence-predictors-and-midterm-clinical-outcomes-of-left-ventricular-obstruction-after-transcatheter-aortic-valve-implantation
#17
Hikaru Tsuruta, Kentaro Hayashida, Fumiaki Yashima, Ryo Yanagisawa, Makoto Tanaka, Takahide Arai, Yugo Minakata, Yuji Itabashi, Mitsushige Murata, Shun Kohsaka, Yuichiro Maekawa, Tatsuo Takahashi, Akihiro Yoshitake, Hideyuki Shimizu, Keiichi Fukuda
OBJECTIVES: We aimed to evaluate the incidence and midterm clinical outcomes of left ventricular obstruction (LVO) after transcatheter aortic valve implantation (TAVI). BACKGROUNDS: LVO is occasionally unmasked following valve replacement for severe aortic stenosis. However, little is known about the prevalence and effects of LVO after TAVI. METHODS: A total of 158 patients who underwent TAVI in our center between October 2013 and November 2015 received echocardiographic evaluations at baseline; before hospital discharge; and at 3, 6, and 12 months after TAVI...
January 23, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29344797/annular-dynamics-of-memo3d-annuloplasty-ring-evaluated-by-3d-transesophageal-echocardiography
#18
Hiroyuki Nishi, Koichi Toda, Shigeru Miyagawa, Yasushi Yoshikawa, Satsuki Fukushima, Daisuke Yoshioka, Yoshiki Sawa
BACKGROUND: We assessed the mitral annular motion after mitral valve repair with the Sorin Memo 3D® (Sorin Group Italia S.r.L., Saluggia, Italy), which is a unique complete semirigid annuloplasty ring intended to restore the systolic profile of the mitral annulus while adapting to the physiologic dynamism of the annulus, using transesophageal real-time three-dimensional echocardiography. METHODS: 17 patients (12 male; mean age 60.4 ± 14.9 years) who underwent mitral annuloplasty using the Memo 3D ring were investigated...
January 17, 2018: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29249790/-ascending-aorta-replacement-and-extended-myectomy-for-acute-aortic-dissection-and-coexistent-hypertrophic-obstructive-cardiomyopathy-report-of-a-case
#19
Tomoyuki Suzuki, Masaki Hata, Kazuhiro Yamaya, Takeshi Saitou, Fumiya Haba, Masahiro Matsuno
Emergent ascending aortic replacement and extended myectomy were performed in a woman with acute aortic dissection who was aged 63 years. Preoperative transthoracic echocardiography performed in the intensive care unit showed only slight left ventricular outflow tract (LVOT) obstruction, but intraoperative transesophageal echocardiography after induction of anesthesia revealed pericardial effusion, systolic anterior motion(SAM), and associated mitral regurgitation(MR). Perioperative SAM and MR are sometimes facilitated under various hemodynamic conditions, but in this case, the left ventricular wall was thick and LVOT appeared to be obstructive by a hypertrophied septum...
December 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/29168204/early-and-medium-term-outcomes-of-alfieri-mitral-valve-repair-in-the-management-of-systolic-anterior-motion-during-septal-myectomy
#20
Richard Collis, Oliver Watkinson, Antonis Pantazis, Maria Tome-Esteban, Perry M Elliott, Christopher G A McGregor
BACKGROUND: This report studies the early and medium-term clinical and echocardiographic outcomes of the Alfieri edge-to-edge mitral valve repair, as adjunctive therapy, to prevent and treat systolic anterior motion (SAM) at the time of septal myectomy (SM) for left ventricular outflow tract obstruction in hypertrophic cardiomyopathy. METHODS: From 2009-2015, 11 consecutive patients had a trans-atrial Alfieri repair, to prevent (n = 7) or treat (n = 4) SAM at the time of SM...
November 2017: Journal of Cardiac Surgery
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