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Right ventricular outflow

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https://www.readbyqxmd.com/read/28537999/imaging-the-adult-with-transposition-of-the-great-arteries
#1
Jason H Anderson, Frank Cetta
PURPOSE OF REVIEW: Patients with complete and congenitally corrected transposition of the great arteries commonly survive into adulthood and present with a vast array of clinical residua. RECENT FINDINGS: Echocardiography remains the primary imaging modality in the routine assessment of the adult with transposition of the great arteries. It provides a comprehensive anatomic and hemodynamic evaluation. Limitations to echocardiography include evaluation of the following: the systemic right ventricle, baffle patency following atrial switch procedure, coronary arteries following arterial switch procedure or Nikadoh, and multilevel right ventricular outflow tract obstruction...
May 19, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28523732/long-term-respiratory-outcomes-after-primary-total-correction-for-tetralogy-of-fallot-and-absent-pulmonary-valve-in-patient-with-respiratory-symptoms
#2
Takaya Hoashi, Toru Iwasa, Koji Kagisaki, Masatoshi Shimada, Kenichi Kurosaki, Isao Shiraishi, Hajime Ichikawa
OBJECTIVE: To review long-term respiratory outcomes for tetralogy of Fallot and absent pulmonary valve (TOF/APV) in respiratory symptomatic populations. METHODS: Of 25 consecutive patients undergoing primary total correction for TOF/APV between 1987 and 2016, Sixteen patients (64%) with a preoperative respiratory disturbance were enrolled. The median age at operation was 1.9 months old, including 4 neonates and 12 infants. Ten patients (62.5%) preoperatively necessitated mechanical ventilator support...
May 19, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28523642/autosomal-recessive-nonsyndromic-arrhythmogenic-right-ventricular-cardiomyopathy-without-cutaneous-involvements-a-novel-mutation
#3
Mahdieh Soveizi, Bahareh Rabbani, Yousef Rezaei, Sedigheh Saedi, Nasim Najafi, Majid Maleki, Nejat Mahdieh
The arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is a genetic disease frequently associated with desmosomal mutations, mainly attributed to dominant mutations in the Plakophilin-2 (PKP2) gene. Naxos and Carvajal are the syndromic forms of ARVD/C due to recessive mutations. Herein, we report an autosomal recessive form of nonsyndromic ARVD/C caused by a mutation in the PKP2 gene. After examination and implementation of diagnostic modalities, the definite diagnosis of ARVD/C was confirmed by detection of ventricular tachycardia with a left bundle branch configuration and a superior axis, T-wave inversion in right precordial leads (i...
May 19, 2017: Annals of Human Genetics
https://www.readbyqxmd.com/read/28520540/virtual-surgery-for-conduit-reconstruction-of-the-right-ventricular-outflow-tract
#4
Chin Siang Ong, Yue-Hin Loke, Justin Opfermann, Laura Olivieri, Luca Vricella, Axel Krieger, Narutoshi Hibino
PURPOSE: Virtual surgery involves the planning and simulation of surgical reconstruction using three-dimensional (3D) modeling based upon individual patient data, augmented by simulation of planned surgical alterations including implantation of devices or grafts. Here we describe a case in which virtual cardiac surgery aided us in determining the optimal conduit size to use for the reconstruction of the right ventricular outflow tract. DESCRIPTION: The patient is a young adolescent male with a history of tetralogy of Fallot with pulmonary atresia, requiring right ventricle-to-pulmonary artery (RV-PA) conduit replacement...
May 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28511925/total-correction-of-tetralogy-of-fallot-at-early-age-a-study-of-183-cases
#5
Mohamed Alassal, Bedir M Ibrahim, Hany M Elrakhawy, Magdy Hassenien, Sameh Sayed, Magdy Elshazly, Nabil Elsadeck
BACKGROUND: Opinions regarding the optimal time for the repair of tetralogy of Fallot vary. A debate also exists about the timing of repair for the asymptomatic infant. METHODS: This study included 183 patients with tetralogy of Fallot. All patients were subjected to clinical examination with measurement of oxygen saturation, 12-lead ECG, plain chest x-ray, and complete laboratory investigation. Echocardiography and cardiac catheterisation were indicated if there was an inability to reach diagnosis by echocardiography, suspicion of coronary anomaly, evaluation of distal pulmonary arteries or suspicion of major aorto-pulmonary collaterals...
April 27, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28511027/ross-konno-procedure-with-cylinder-mitral-valve-replacement-in-49-days-old-infant
#6
Oleg Fedevych, Oleksandr Yachnik, Yaroslav Mykychak, Yaroslav Ivanov, Olga Borodinova, Illya Yemets
A neonate with antenatally diagnosed severe aortic valve stenosis, left ventricular outflow tract obstruction, left ventricular endocardial fibroelastosis, and severe mixed mitral valve disease was admitted to our center for balloon aortic valvuloplasty. On day 49, we performed a Ross-Konno procedure and mitral valve replacement on the baby, whose weight was 3.4 kg. Right ventricle-to-pulmonary artery continuity was restored with a handmade trileaflet Gore-Tex conduit. We used a handmade cylindrical prosthesis made from decellularized equine pericardium in the mitral position...
January 1, 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28506214/origins-location-of-the-outflow-tract-ventricular-arrhythmias-exhibiting-qrs-pattern-or-qs-pattern-with-a-notch-on-the-descending-limb-in-lead-v1
#7
Cong Lin, Cheng Zheng, De-Pu Zhou, Xiao-Wei Li, Shu-Jie Wu, Jia-Feng Lin
BACKGROUND: Ventricular outflow tract(VOT) ventricular arrhythmias(VAs) presenting qrS pattern or QS pattern with a notch on the descending limb in lead V1 were consistently thought of arising from the commissure between left and right coronary cusp (L-RCC) by previous studies. However, we found they could originate from other anatomic structures in VOT. This study aimed to investigate the exact origin of this kind VAs. METHODS: Forty-nine patients of VOT premature ventricular contrations/ventricular tachycardia(PVCs/VT) with lead V1 presenting qrS pattern or QS pattern with a notch on the descending limb undergoing successful radiofrequency catheter ablation(RFCA) in our center were analyzed...
May 15, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28505294/anticalcification-effect-of-a-combination-of-decellularization-organic-solvents-and-amino-acid-detoxification-on-glutaraldehyde-fixed-xenopericardial-heart-valves-in-a-large-animal-long-term-circulatory-model
#8
Chun Soo Park, Yong Jin Kim, Jeong Ryul Lee, Hong-Gook Lim, Ji-Eun Chang, Saeromi Jeong, Nayun Kwon
OBJECTIVES: : We aimed to investigate the effect of a combination of anticalcification treatments, which were effective for preventing calcification in a small animal experiment, on glutaraldehyde-fixed xenopericardial valves using a large-animal long-term circulatory model. METHODS: : Valved conduits were made of porcine pericardium as a leaflet and bovine pericardium as a conduit and were implanted into the right ventricular outflow tract of goats under cardiopulmonary bypass...
May 12, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28500178/electrical-substrate-elimination-in-135-consecutive-patients-with-brugada-syndrome
#9
Carlo Pappone, Josep Brugada, Gabriele Vicedomini, Giuseppe Ciconte, Francesco Manguso, Massimo Saviano, Raffaele Vitale, Amarild Cuko, Luigi Giannelli, Zarko Calovic, Manuel Conti, Paolo Pozzi, Andrea Natalizia, Simonetta Crisà, Valeria Borrelli, Ramon Brugada, Georgia Sarquella-Brugada, Marco Guazzi, Alessandro Frigiola, Lorenzo Menicanti, Vincenzo Santinelli
BACKGROUND: There is emerging evidence that localization and elimination of abnormal electric activity in the epicardial right ventricular outflow tract may be beneficial in patients with Brugada syndrome. METHODS AND RESULTS: A total of 135 symptomatic Brugada syndrome patients having implantable cardiac defibrillator were enrolled: 63 (group 1) having documented ventricular tachycardia (VT)/ventricular fibrillation (VF) and Brugada syndrome-related symptoms, and 72 (group 2) having inducible VT/VF without ECG documentation at the time of symptoms...
May 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28491706/radiofrequency-catheter-ablation-for-treatment-of-premature-ventricular-contractions-triggering-ventricular-fibrillation-from-the-right-ventricular-outflow-tract-in-a-patient-with-early-repolarization-syndrome
#10
Jun Kakihara, Masahiko Takagi, Yusuke Hayashi, Hiroaki Tatsumi, Atsushi Doi, Minoru Yoshiyama
No abstract text is available yet for this article.
July 2016: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/28487470/discrepant-effects-of-heart-failure-on-electrophysiological%C3%A2-property-in-right-ventricular-outflow-tract-and-left-ventricular-outflow-tract-cardiomyocytes
#11
Yen-Yu Lu, Chen-Chuan Cheng, Chin-Feng Tsai, Yung Kuo Lin, Ting-I Lee, Yao-Chang Chen, Shih-Ann Chen, Yi Jen Chen
Ventricular arrhythmias commonly arise from the right and left ventricular outflow tracts (RVOT/LVOT) in patients without structural heart disease. Heart failure (HF) significantly increases the risk of ventricular arrhythmias. The regional differences and how HF affects the electrophysiological characteristics of RVOT and LVOT cardiomyocytes remain unclear. The whole-cell patch clamp technique was used to investigate the action potentials and ionic currents in isolated single RVOT and LVOT cardiomyocytes from control and rapid ventricular pacing-induced HF rabbit...
May 9, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28485321/monitoring-changes-in-hepatic-venous-velocities-flow-after-a-fluid-challenge-can-identify-shock-patients-who-lack-fluid-responsiveness
#12
Wei Du, Xiao-Ting Wang, Yun Long, Da-Wei Liu
BACKGROUND: Evaluating the hemodynamic status and predicting fluid responsiveness are important in critical ultrasound assessment of shock patients. Transthoracic echocardiography with noninvasive diagnostic parameters allows the assessment of volume responsiveness. This study aimed to assess the hemodynamic changes in the liver and systemic hemodynamic changes during fluid challenge and during passive leg raising (PLR) by measuring hepatic venous flow (HVF) velocity. METHODS: This is an open-label study in a tertiary teaching hospital...
May 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28484842/conventional-mapping-and-ablation-of-focal-ventricular-tachycardias-in-the-healthy-heart
#13
REVIEW
Sonia Busch, Johannes Brachmann, Ahmed Saleh, Mathias Forkmann
Ventricular tachycardias (VT) in the healthy heart, also known as idiopathic VTs, often have a focal origin. Triggered activity due to delayed after-depolarization is the most likely mechanism of focal VTs. Localization of the site of origin of focal VTs is based on activation mapping with or without combination with pace mapping. The characteristic anatomic site of origin of idiopathic VTs is the right and left outflow tract. Other sites include the tricuspid and mitral annulus, the papillary muscles, and Purkinje fibers...
May 8, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28481746/aortic-valve-myxoma-in-a-young-man-a-case-report-and-review-of-literature
#14
Zhenchun Ji, Longgang Wang, Jiacheng Sun, Wenxue Ye, Yunsheng Yu, Haoyue Huang, Yanqiu Hu, Ziying Yang, Zhenya Shen
Myxoma is the most commonly found cardiac primary tumor. The left atrium is the most common localization of myxoma, followed by the right atrium. However, it is rare in the left and right ventricles. Myxoma originating from cardiac valves is extremely rare. This article presents a case of a 17-year-old male who was admitted due to heart murmur for one year. Transthoracic echocardiography indicated a 1.9 cm round solid mass in the left ventricular outflow tract. Excision surgery and aortic valve replacement were performed in this patient...
April 30, 2017: Heart Surgery Forum
https://www.readbyqxmd.com/read/28472282/right-ventricular-outflow-tract-high-density-endocardial-unipolar-voltage-mapping-in-patients-with-brugada-syndrome-evidence-for-electroanatomical-abnormalities
#15
Konstantinos P Letsas, Michael Efremidis, Konstantinos Vlachos, Stamatis Georgopoulos, Nikolaos Karamichalakis, Dimitrios Asvestas, Kosmas Valkanas, Panagiotis Korantzopoulos, Tong Liu, Antonios Sideris
Aims: Epicardial structural abnormalities at the right ventricular outflow tract (RVOT) may provide the arrhythmia substrate in Brugada syndrome (BrS). Electroanatomical endocardial unipolar voltage mapping is an emerging tool that accurately identifies epicardial abnormalities in different clinical settings. This study investigated whether endocardial unipolar voltage mapping of the RVOT detects electroanatomical abnormalities in patients with BrS. Methods and results: Ten asymptomatic patients (8 males, 34...
May 2, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28469078/mir-21-is-associated-with-fibrosis-and-right-ventricular-failure
#16
Sushma Reddy, Dong-Qing Hu, Mingming Zhao, Eddie Blay, Nefthi Sandeep, Sang-Ging Ong, Gwanghyun Jung, Kristina B Kooiker, Michael Coronado, Giovanni Fajardo, Daniel Bernstein
Combined pulmonary insufficiency (PI) and stenosis (PS) is a common long-term sequela after repair of many forms of congenital heart disease, causing progressive right ventricular (RV) dilation and failure. Little is known of the mechanisms underlying this combination of preload and afterload stressors. We developed a murine model of PI and PS (PI+PS) to identify clinically relevant pathways and biomarkers of disease progression. Diastolic dysfunction was induced (restrictive RV filling, elevated RV end-diastolic pressures) at 1 month after generation of PI+PS and progressed to systolic dysfunction (decreased RV shortening) by 3 months...
May 4, 2017: JCI Insight
https://www.readbyqxmd.com/read/28465993/right-ventricular-outflow-tract-systolic-excursion-and-fractional-shortening-can-these-echocardiographic-parameters-be-used-for-the-assessment-of-right-ventricular-function
#17
Lamyaa Elsayed Allam, Ahmed Mohammed Onsy, Hylan Ahmed Ghalib
BACKGROUND: Echocardiographic right ventricular (RV) function assessment is difficult and still a gray area despite rapid advancement of imaging modalities. The aim of this study is to assess the role of echocardiographic RV outflow tract (RVOT) function in the form of RVOT fractional shortening (RVOT FS) and RVOT systolic excursion (RVOT SE) for the assessment of RV function. METHODS: We studied ninety individuals divided equally into two groups. The control group included 45 normal healthy individuals and age-matched patient group included 45 patients with RV dysfunction which was defined by tricuspid annular plane systolic excursion (TAPSE) <16 mm and RV fractional area change (RV FAC) ≤35%...
April 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/28457386/first-world-report-of-internal-power-cable-repair-in-left-ventricular-assist-device-jarvik-2000-case-report
#18
C G Sassi, M Cameli, A Dokollari, F Diciolla, S Scolletta, C Ricci, P Lucatelli, S Mondillo, M Maccherini
BACKGROUND: There are limited clinical reports concerning internal power cable fixing in left ventricular assist device (L-VAD) patients. Actually there are no reports in the literature about Jarvik 2000 internal cable repair. We show the first description of a technique for surgical reparation of such a fatal complication. PATIENT HISTORY: The patient was a 62-year-old woman who had L-VAD implantation (Jarvik 2000) with outflow graft apposition in descending thoracic aorta through left thoracotomy access, in 2009...
May 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28457382/case-report-aortic-valve-replacement-after-jarvik-2000-left-ventricular-assist-device-implantation-in-long-time-survivor-with-severe-aortic-valve-regurgitation
#19
A Dokollari, M Cameli, C G Sassi, G Davoli, S Scolletta, C Ricci, P Lucatelli, S Mondillo, M Maccherini
BACKGROUND: There are limited clinical records in the literature regarding aortic valve replacement in left ventricular assist device (L-VAD) patients. Previously we had two cases of severe aortic valve regurgitation in patients with L-VAD support treated with Corvalve prosthesis insertion and Amplatzer closure procedure. Both patients died a few days after the procedure from complications not related to the procedure itself. PATIENT HISTORY: The patient was a male with previous coronary artery bypass graft surgery in 2001 that was complicated with postischemic dilated cardiomyopathy with severe heart failure (ejection fraction [EF], 20%)...
May 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28449506/surgical-resection-of-right-ventricular-rhabdomyoma-under-the-guidance-of-transesophageal-echocardiography-on-a-beating-heart
#20
Xueguang Han, Haibo Song, Li Zhou, Chunling Jiang
Cardiac rhabdomyoma, a type of benign myocardial tumor, is regarded as the most common fetal cardiac tumor. Rhabdomyomas are usually found before birth or during the first year of life. It is widely accepted that rhabdomyomas are strongly associated with tuberous sclerosis, and tend to regress spontaneously without surgical excision. However, if the tumor has caused significant obstruction or refractory arrhythmias, the surgery should be advocated. Most of the surgeries for pediatric cardiac tumors are performed under cardiopulmonary bypass (CPB) with cardioplegia...
March 2017: Journal of Thoracic Disease
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