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subaortic stenosis

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https://www.readbyqxmd.com/read/29705541/subaortic-stenosis-by-accessory-mitral-tissue-failure-of-embryonic-positioning
#1
EDITORIAL
Gregorio Laguna, Miriam Blanco, Yolanda Carrascal
No abstract text is available yet for this article.
April 3, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29673637/arterial-switch-ventricular-septation-and-fontan-takedown-for-double-inlet-left-ventricle
#2
Shu-Chien Huang, Shyh-Jye Chen, Yi-Chia Wang, Chi-Hsiang Huang, Shuenn-Nan Chiu, Yih-Sharng Chen
A patient with double inlet left ventricle with transposition of great arteries, and severe coarctation of the aorta received aortoplasty and pulmonary artery banding, followed by bidirectional Glenn shunt and extracardiac total cavopulmonary connection(TCPC). Severe subaortic stenosis and increased atrio-ventricular valve regurgitation were noted 4 years after TCPC.
April 16, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29576787/management-of-cardiovascular-disorders-in-patients-with-noonan-syndrome-a-case-report
#3
Mohammad Rafie Khorgami, Maryam Moradian, Negar Omidi, Mohammad Yousef Aarabi Moghadam
The Noonan syndrome is a rare disorder, one of whose major complications is cardiovascular involvement. A wide spectrum of congenital heart diseases has been observed in this syndrome. The most common cardiac disorder is pulmonary valve stenosis, which has a progressive nature. Hypertrophic cardiomyopathy is less common, but its morbidity and mortality rates are high. We herein introduce a 12-year-old boy with the typical findings of the Noonan syndrome. His symptoms began from infancy, and there was a gradual exacerbation in his respiratory and cardiac manifestations with age...
October 2017: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/29530019/multiple-midline-defects-identified-in-a-litter-of-golden-retrievers-following-gestational-administration-of-prednisone-and-doxycycline-a-case-series
#4
Joanna L Kaplan, Catherine T Gunther-Harrington, Jessie S Sutton, Joshua A Stern
BACKGROUND: The teratogenic effects of immunomodulatory and certain antimicrobial therapies are described in small rodents and humans. While the described teratogenic effects in small rodents have been extrapolated to make conclusions about its use in the pregnant dam, teratogenic effects of prednisone and doxycycline have not yet been reported in the dog. Here we report and describe midline defects observed in a litter of golden retriever puppies exposed to mid-gestational immunosuppressive and antimicrobial therapy...
March 12, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29437237/intraoperative-transesophageal-echocardiographic-predictors-of-recurrent-left-ventricular-outflow-tract-obstruction-in-children-undergoing-subaortic-stenosis-resection
#5
Hythem M Nawaytou, Laura Mercer-Rosa, Alexandra Channing, Meryl S Cohen
BACKGROUND: Intraoperative transesophageal echocardiography (iTEE) is used to assess for residual left ventricular outflow tract obstruction (LVOTO) after surgical resection of subaortic membrane causing subaortic stenosis (sub-AS). We aimed to identify the iTEE features associated with recurrence of LVOTO. METHODS: We conducted a retrospective study of children undergoing sub-AS resection from June 2006 to June 2014. Doppler assessment of the flow velocity and the anatomical features of the left ventricular outflow tract were analyzed from stored echocardiograms...
February 13, 2018: Echocardiography
https://www.readbyqxmd.com/read/29414430/surgical-pathology-of-subaortic-septal-myectomy-histology-skips-over-clinical-diagnosis
#6
João Abecasis, Rosa Gouveia, Mariana Castro, Maria João Andrade, Regina Ribeiras, Sância Ramos, Miguel Abecasis, Nuno Cardim, Victor Gil
BACKGROUND: Subaortic septal myectomy is usually performed to mitigate obstruction in patients with the obstructive form of hypertrophic cardiomyopathy (HCM) or in those with congenital subaortic stenosis. Moreover, it is combined with aortic valve replacement in patients with severe aortic valve stenosis (SAS) and asymmetrical septal hypertrophy causing concomitant left ventricular outflow tract obstruction. When both conditions coexist, it is conceptually difficult to identify a cardiomyopathy beyond an adaptive myocardial hypertrophy, strictly related to pressure overload...
March 2018: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/29397472/gastrointestinal-bleeding-in-native-and-prosthetic-valve-disease
#7
REVIEW
Joseph L Blackshear
Gastrointestinal bleeding with severe aortic stenosis was originally described in the 1950s by Heyde, although for years, the association was debated. Further discovery of mechanisms and the ubiquity and severity of acquired von Willebrand syndrome in the left ventricular assist device therapy have removed any doubts. At this time, gastrointestinal bleeding from intestinal angiodysplasia in patients with turbulence-related proteolysis of the highest molecular weight multimers of von Willebrand factor is now known to occur in patients with aortic stenosis, and also subaortic obstruction and associated mitral insufficiency in hypertrophic cardiomyopathy, isolated mitral and aortic insufficiency, endocarditis, and in patients with prosthetic valve dysfunction, either from stenosis or insufficiency...
February 3, 2018: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29327146/mid-term-outcome-of-100-consecutive-ross-procedures-excellent-survival-but-yet-to-be-a-cure
#8
Corina Zimmermann, Christine Attenhofer Jost, René Prêtre, Christoph Mueller, Matthias Greutmann, Burkhardt Seifert, Emanuela Valsangiacomo Büchel, Oliver Kretschmar, Hitendu Hasmukhlal Dave, Roland Weber
The Ross procedure offers excellent short-term outcome but the long-term durability is under debate. Reinterventions and follow-up of 100 consecutive patients undergoing Ross Procedure at our centre (1993-2011) were analysed. Follow-up was available for 96 patients (97%) with a median duration of 5.3 (0.1-17.1) years. Median age of the patient cohort was 15.2 (0.04-58.4) years with 76 males. 93% had underlying congenital aortic stenosis. Root replacement technique was applied in all. The most common valved conduits used for reconstruction of the right ventricular outflow tract were homografts (66 patients) and bovine jugular vein (ContegraR ) graft (31 patients)...
March 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29310563/evaluation-of-factors-associated-with-achievement-of-biventricular-repair-after-bilateral-pulmonary-artery-banding-in-patients-with-interrupted-aortic-arch
#9
Yasuhiro Hirano, Noboru Inamura, Yukiko Kawazu, Hisaaki Aoki, Futoshi Kayatani, Shigemitsu Iwai, Hiroaki Kawata
BACKGROUND: At our institution, we perform bilateral pulmonary artery banding (BPAB) as the first-stage palliation for interrupted aortic arch (IAA) with low birth weight or severe subaortic stenosis (SAS). The present study aimed to identify factors that may influence the decision regarding the type of second-stage operation, that is, univentricular palliation or biventricular repair, in these patients. METHODS: Cardiac catheterization and angiographic data of nine patients with IAA who underwent initial BPAB and subsequent univentricular or biventricular repair were retrospectively analyzed...
January 2018: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29190641/intracardiac-anatomical-relationships-and-potential-for-streaming-in-double-inlet-left-ventricles
#10
Sophie L Meyer, Monique R Jongbloed, Siew Y Ho, Margot M Bartelings, Karen P McCarthy, Hideki Uemura, Tjark Ebels
The aim of this study was to gain better understanding of the variable anatomical features of double inlet left ventricle hearts without cavopulmonary connection that would potentially facilitate favorable streaming. Thirty-nine post-mortem specimens of double inlet left ventricle without cavopulmonary connection were investigated. The focus was on anatomical characteristics that could influence the flow and separation of deoxygenated and oxygenated blood in the ventricles. Elements of interest were the ventriculoarterial connection, the spatial relationship of the ventricles, the position and size of the great arteries, the ventricular septal defect, the presence of relative outflow tract stenosis and the relationship of the inflow and outflow tracts...
2017: PloS One
https://www.readbyqxmd.com/read/29187205/combined-double-chambered-right-ventricle-tricuspid-valve-dysplasia-ventricular-septal-defect-and-subaortic-stenosis-in-a-dog
#11
Iuliu Scurtu, Flaviu Tabaran, Mircea Mircean, Gavril Giurgiu, Andras Nagy, Cornel Catoi, Dan G Ohad
BACKGROUND: Double chambered right ventricle (DCRV) is a congenital heart anomaly where the right ventricle is divided into two chambers. We describe, for the first time, an unusual combination of DCRV combined with some other congenital heart defects. CASE PRESENTATION: A 1.2-year-old Golden Retriever was presented with lethargy, exercise intolerance and ascites. Physical examination revealed an irregularly irregular pulse and a grade V/VI, systolic, right cranial murmur...
November 29, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29174590/double-outlet-right-ventricle-with-subpulmonary-ventricular-septal-defect-taussig-bing-anomaly-and-other-complex-congenital-cardiac-malformations-in-an-american-quarter-horse-foal
#12
Rebecca Kohnken, Karsten Schober, Jennifer Godman, Alison Gardner, Tiffany Jenkins, Eric Schroeder, Peter Baker, Laura Dunbar
A 4-week-old American Quarter Horse colt presented with a recent history of diarrhea and decreased activity level. On initial physical examination, the animal was bright and alert and major findings were limited to a loud systolic heart murmur radiating widely over both sides of the thorax. While in the hospital, the clinical condition of the foal warranted further imaging to determine the cause and extent of cardiac disease. A variety of congenital cardiac malformations were identified during echocardiographic examination and autopsy, including a double outlet right ventricle and a subpulmonary interventricular septal defect (Taussig-Bing anomaly), ventricular inversion with atrioventricular discordance, tricuspid valve atresia, a septum primum interatrial septal defect, mitral valve dysplasia with a cleft in the septal mitral valve cusp, aortic, and subaortic stenosis, tubular hypoplasia of the ascending aorta and the aortic arch, a patent ductus arteriosus, an aberrant circumflex coronary artery, and aberrant left and right subclavian arteries...
February 2018: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/29023732/murmur-intensity-in-adult-dogs-with-pulmonic-and-subaortic-stenosis-reflects-disease-severity
#13
D Caivano, D Dickson, M Martin, M Rishniw
OBJECTIVES: The aims of this study were to determine whether murmur intensity in adult dogs with pulmonic stenosis or subaortic stenosis reflects echocardiographic disease severity and to determine whether a six-level murmur grading scheme provides clinical advantages over a four-level scheme. MATERIALS AND METHODS: In this retrospective multi-investigator study on adult dogs with pulmonic stenosis or subaortic stenosis, murmur intensity was compared to echocardiographically determined pressure gradient across the affected valve...
March 2018: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28939249/sudden-cardiac-death-in-a-dog-during-holter-recording-r-on-t-phenomenon
#14
T Gunasekaran, R A Sanders
A 6-year-old castrated male Golden Retriever was diagnosed with severe subaortic stenosis with severe left atrial enlargement and high heart rate due to atrial fibrillation. Treatment with digoxin and diltiazem to control ventricular response rate was initiated. Ambulatory electrocardiographic monitoring (Holter monitoring) was performed at the beginning of treatment and was repeated to evaluate the patient's response to drug therapy. Drug dose adjustments were made based on response to therapy as assessed by Holter monitoring...
October 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28878105/percutaneous-balloon-dilation-of-discrete-subaortic-stenosis-a-futile-exercise
#15
Nagaraja Moorthy, Rajiv Ananthakrishna, Dattatreya P V Rao, Satvic C Manjunath, Manjunath C Nanjappa
Discrete subaortic stenosis (DSS) is a progressive obstruction of left ventricular outflow tract (LVOT) resulting in the development of aortic regurgitation in its natural course. Hence, early intervention is recommended. Percutaneous balloon dilation of DSS has been reported and can substantially reduce LVOT pressure gradient. The response to balloon dilation of DSS is transient and may complicate with chordal or papillary muscle rupture. Hence, balloon dilation of DSS should be discouraged.
September 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28820560/severe-valvular-aortic-stenosis-and-fixed-subvalvular-aortic-stenosis-a-rare-and-challenging-combination
#16
Ayman Elbadawi, Marwan Saad, Islam Y Elgendy, Basarat Baig, Farhad Abtahian
A 58-year-old man with a history of hypertension presented with accelerating angina. Transthoracic echocardiography revealed a thickened aortic valve with pressure gradients and an estimated aortic valve area suggestive of mild aortic stenosis. Left heart catheterization demonstrated non-significant coronary artery disease. Pressure tracings showed a high left ventricular pressure and a mean gradient across the aortic valve of 69 mmHg. Subsequent transesophageal echocardiography revealed a subvalvular aortic stenosis that was secondary to the subaortic membrane, with severe valvular aortic stenosis...
March 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28770306/prenatal-echocardiographic-predictors-of-postnatal-management-strategy-in-the-fetus-with-right-ventricle-hypoplasia-and-pulmonary-atresia-or-stenosis
#17
Li Cao, Zhiyun Tian, Jack Rychik
Fetuses with pulmonary atresia or pulmonary stenosis with intact ventricular septum manifest variable degrees of right ventricle hypoplasia and inadequacy. We studied the relationship between prenatal echocardiographic parameters and their progression through gestation as potential predictors of postnatal single-ventricle or two-ventricle care strategy. Serial fetal echocardiograms of pulmonary atresia (n = 28) or severe pulmonary stenosis (n = 8) and intact ventricular septum were reviewed. Measurements included tricuspid valve and mitral valve diameter and Z scores, degree of tricuspid regurgitation, presence of subaortic stenosis, presence of coronary artery fistulae, and Doppler pulsatility indices in middle cerebral and umbilical artery...
December 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28655532/surgical-relief-of-left-ventricular-outflow-tract-obstruction-in-adults-with-congenital-aortic-stenosis-and-associated-aortic-annulus-hypoplasia-and-or-subaortic-obstruction
#18
Tanveer Ahmad, Amalan Thuraisingam, Marco Larobina, Peter Skillington
BACKGROUND: In children and adolescents, a Ross/Konno operation is commonly done to both enlarge the aortic root and provide a competent aortic valve with relief of left ventricular outflow tract obstruction (LVOTO). Optimum management is not so straightforward in adults. METHODS: Between 1995 and 2014, 16 patients of mean age 39.4 years (18-57 years) with hypoplastic aortic annulus (AA) measuring 20mm and less, and mean aortic valve/LVOT gradient of 61mmHg (30-70mmHg) presented for surgery...
June 3, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28636718/trends-and-outcomes-of-off-label-use-of-transcatheter-aortic-valve-replacement-insights-from-the-ncdr-sts-acc-tvt-registry
#19
Ravi S Hira, Sreekanth Vemulapalli, Zhuokai Li, James M McCabe, John S Rumsfeld, Samir R Kapadia, Mahboob Alam, Hani Jneid, Creighton Don, Mark Reisman, Salim S Virani, Neal S Kleiman
Importance: Transcatheter aortic valve replacement (TAVR) was approved by the US Food and Drug Administration for severe aortic stenosis in patients who cannot undergo surgery and for patients at high operative risk. Use of TAVR for off-label indications has not been previously reported. Objective: To evaluate patterns and adverse outcomes of off-label use of TAVR in US clinical practice. Design, Setting and Participants: Patients receiving commercially funded TAVR in the United States are included in the Transcatheter Valve Therapy Registry...
August 1, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28633276/heart-failure-caused-by-misdiagnosed-subaortic-stenosis-in-adulthood-lesson-for-daily-practice
#20
Gabriela Dostálová, Zuzana Hlubocká, Tomáš Paleček, Vladimír Černý, Tomáš Grus, Jaroslav Lindner, Aleš Linhart
No abstract text is available yet for this article.
July 2017: Annals of Thoracic Surgery
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