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Intracardiac echocardiography

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https://www.readbyqxmd.com/read/27916673/pathophysiology-of-the-pericardium
#1
REVIEW
Brian D Hoit
Pericardial heart disease includes pericarditis, (an acute, subacute, or chronic fibrinous, noneffusive, or exudative process), and its complications, constriction, (an acute, subacute, or chronic adhesive or fibrocalcific response), and cardiac tamponade. The pathophysiology of cardiac tamponade and constrictive pericarditis readily explains their respective findings on clinical examination, Doppler echocardiography, and at cardiac catheterization. The primary abnormality of cardiac tamponade is pan-cyclic compression of the cardiac chambers by increased pericardial fluid requiring that cardiac chambers compete for a fixed intrapericardial volume...
December 1, 2016: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/27913338/intracardiac-vortex-dynamics-by-high-frame-rate-doppler-vortography-i-in-vivo-i-comparison-with-vector-flow-mapping-and-4-d-flow-mri
#2
Julia Faurie, Mathilde Baudet, Kondo Claude Assi, Dominique Auger, Guillaume Gilbert, Francois Tournoux, Damien Garcia
Recent studies have suggested that intracardiac vortex flow imaging could be of clinical interest to early diagnose the diastolic heart function. Doppler vortography has been intro-duced as a simple color Doppler method to detect and quantify intraventricular vortices. This method is able to locate a vortex core based on the recognition of an antisymmetric pattern in the Doppler velocity field. Because the heart is a fast-moving organ, high frame rates are needed to decipher the whole blood vortex dynamics during diastole...
November 29, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27909481/ice-guided-crt-is-there-evidence-of-reverse-remodeling
#3
REVIEW
Antonio Rossillo Md, Angelo B Ramondo Md
Cardiac resynchronization therapy (CRT) is an accepted treatment for patients with heart failure (HF), impaired left ventricular (LV) function, and a wide QRS complex. However, more than 30% of eligible patients fail to benefit from CRT. It is clearly necessary to define the characteristics of the best candidates for this therapy. To this end, surface ECG and echocardiography have been tested. Unfortunately, however, neither of these examinations has proved sufficiently able to identify the best patients. A tailored approach based on the evaluation of both electrical and mechanical delay to guide LV lead placement seems to be the most reasonable strategy in order to increase the efficacy of CRT therapy...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909479/atrial-fibrillation-ablation-in-adults-with-repaired-congenital-heart-disease
#4
REVIEW
Marta Acena Md, Ignasi Anguera Md PhD, Paolo D Dallaglio Md, Marcos Rodriguez Md, Xavier Sabaté Md PhD
The incidence of atrial fibrillation (AF) in congenital heart disease (CHD) adults has increased in the past decades due to a longer life expectancy of this population where the subjects are exposed to cardiac overflow, overpressure and structural changes for years. The literature regarding AF ablation in repaired CHD adults emphasizes the importance of intracardiac echocardiography (ICE) to perform the transseptal puncture and the ablation procedure in the left atrium (LA), both effectively and safely. In small case control studies, where the predominant congenital cardiomyopathy was the atrial septal defect, the most common strategy for ablation was antral isolation of the pulmonary veins showing results, at one year follow-up, similar to those in the general population...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27886610/integration-of-intracardiac-echocardiography-and-computed-tomography-during-atrial-fibrillation-ablation-combining-ultrasound-contours-obtained-from-the-right-atrium-and-ventricular-outflow-tract
#5
Kohki Nakamura, Shigeto Naito, Kenichi Kaseno, Yosuke Nakatani, Takehito Sasaki, Naofumi Anjo, Eiji Yamashita, Koji Kumagai, Nobusada Funabashi, Yoshio Kobayashi, Shigeru Oshima
BACKGROUND: We aimed to optimize the acquisition of the left atrial (LA) and pulmonary vein (PV) ultrasound contours for more accurate integration of intracardiac echocardiography (ICE) and computed tomography (CT) using the CARTO(®) 3 system during atrial fibrillation (AF) ablation. METHODS: Eighty-five AF patients underwent integration of ICE and CT using (1) the LA roof and posterior wall contours acquired from the right atrium (RA), (2) all LA/PV contours from the RA (Whole-RA-integration), (3) the LA roof/posterior wall contours from the RA and right ventricular outflow tract (RVOT) (Posterior-RA/RV-integration), and (4) all LA/PV contours from the RA and RVOT (Whole-RA/RV-integration)...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27885742/catheter-ablation-in-the-right-ventricular-outflow-tract-associated-with-occlusion-of-left-anterior-descending-coronary-artery
#6
Daniel Benhayon, Eyal Nof, William W Chik, Francis Marchlinski
Major vessel injury during right ventricular outflow tract ablation is not something widely recognized, and routine evaluation of the left anterior descending artery (LAD) location in relation to the septal right ventricle is not routinely performed. In the present article we report a case of acute LAD occlusion after RVOT ablation and then illustrate the intimately close relationship of the left anterior descending artery to the anterior septal site of the RVOT (∼ 2-3 cm under the pulmonic valve), using a combination of intracardiac echocardiography and 3D electroanatomical mapping (EAM) recorded during a second case, in order to specifically point to the area at risk...
November 25, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27883351/-rivaroxaban-resistant-right-ventricular-thrombus-successfully-treated-with-vitamin-k-antagonist-in-a-patient-with-dilated-cardiomyopathy
#7
Waldemar Elikowski, Małgorzata Małek-Elikowska, Marek Słomczyński, Teresa Ganowicz-Kaatz, Andrzej Bolewski, Paweł Skrzywanek
: Rivaroxaban, a selective inhibitor of active factor X belongs to the group of direct-acting oral anticoagulants (DOAC), more and more often replacing vitamin K antagonists (VKA) in venous thromboembolic disease and nonvalvular atrial fibrillation. Attempts are also being made to use DOAC to treat locally formed intracardiac thrombi, mainly in the left atrium and its appendage, in atrial fibrillation and in heart failure. Rarely diagnosed local right ventricular thrombus (RVT) may be a complication of dilated cardiomyopathy (DCM)...
November 25, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/27837084/intraoperative-diagnosis-of-intracardiac-thrombus-during-orthotopic-liver-transplantation-with-transesophageal-echocardiography-a-case-series-and-literature-review
#8
Adam A Dalia, Hisham Khan, Antolin S Flores
Anesthesia for orthotopic liver transplantation (OLT) is challenging for any anesthesiologist as the patients undergoing this procedure are among the most critically ill. Adding to the underlying complexity of OLT management is the rare complication of an intracardiac thrombus (ICT). Intracardiac thrombi can present following liver allograft reperfusion resulting in high morbidity and mortality. Currently there is no consensus treatment for ICT, and the gold standard for diagnosis is intraoperative transesophageal echocardiography (TEE); these 2 factors lead to a dangerous amalgam of the difficulty in diagnosing and treating the disease...
November 10, 2016: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27834764/vascular-ring-diagnosis-and-management-notable-trends-over-25-years
#9
William N Evans, Ruben J Acherman, Michael L Ciccolo, Sergio A Carrillo, Gary A Mayman, Carlos F Luna, Robert C Rollins, William J Castillo, Humberto Restrepo
BACKGROUND: Vascular rings (VRs) are recognized as uncommon but not rare cardiovascular malformations. METHODS: We analyzed data from all patients born in Southern Nevada, who underwent diagnosis and management of VR from 1990 to 2015, RESULTS: From 1990 to 2015, a total of 92 patients were diagnosed prenatally and postnatally. Of the 92 patients, 73 (79%) had right aortic arch and aberrant left subclavian artery (RAA-ALS) with a left ductus arteriosus or ligamentum, 17 (19%) had a double aortic arch (DAA), and 2 (2%) had a pulmonary artery sling...
November 2016: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/27826136/vegetation-attached-to-the-left-interatrial-septal-surface-at-the-congenital-location-of-the-foramen-ovale-a-rare-occurrence
#10
Waqas Javed Siddiqui, Ishan Acharya, Praneet Iyer, Muhammad Yasir Khan, Muhammad Rafique, Anand Kaji, Ketan Gala
BACKGROUND Non-valvular mural infective endocarditis (IE) is a rare bacterial growth on cardiac walls. Several risk factors have been reported. Echocardiography is an important diagnostic modality for diagnosing vegetation attached to the intracardiac walls. CASE REPORT We present the case of a 57-year-old man admitted with Staphylococcus aureus bacteremia due to an infected tunnelled hemodialyses catheter. Transthoracic echocardiogram did not show any abnormality, but transesophageal echocardiogram (TEE) revealed a 1...
November 9, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27807929/imaging-for-percutaneous-left-atrial-appendage-closure
#11
Roshan Prakash, Jacqueline Saw
Percutaneous left atrial appendage (LAA) closure is increasingly performed worldwide as an alternative to long-term oral anticoagulation, especially for patients who are considered ineligible for anticoagulation. This is a complex procedure with success that hinges upon good understanding of the LAA and surrounding structures anatomy. Multimodality imaging can provide important three-dimensional appreciation of the LAA anatomy, which facilitates procedural safety and success. Thus, proceduralists and imagers involved with LAA closure should have good comprehension of such imaging modalities (cardiac CT angiography, transesophageal echocardiography, and/or intracardiac echocardiography) prior to embarking on this procedure...
November 3, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27773399/a-novel-approach-in-the-use-of-radiofrequency-catheter-ablation-of-septal-hypertrophy-in-hypertrophic-obstructive-cardiomyopathy
#12
Abhijeet B Shelke, Rajeev Menon, Anuj Kapadiya, Sachin Yalagudri, Daljeet Saggu, Sandeep Nair, C Narasimhan
OBJECTIVE: Alcohol septal ablation (ASA) is a therapeutic alternative to surgical myectomy in patients with hypertrophic obstructive cardiomyopathy (HOCM). However, the anatomical variability of the septal branch, risk of complete heart block, and late onset ventricular arrhythmias are limitations to its therapeutic usage. There is recent interest in the use of radiofrequency catheter ablation (RFCA) as a therapeutic option in HOCM. We aimed to assess the safety and efficacy of RFCA in the treatment of symptomatic HOCM...
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27753105/dilemma-in-clinical-diagnosis-of-right-ventricular-masses
#13
Livija Sušić, Vedrana Baraban, Josip Vincelj, Lana Maričić, Jasmina Ćatić, Robert Blažeković, Spomenka Manojlović
Detection of an intracardiac mass always represents a clinical challenge. We present a 61-year-old female patient with symptoms of New York Heart Association class III. Two-dimensional transthoracic echocardiography revealed a hypoechogenic mass in the cavity of the dilated right ventricle (RV). Cardiac MRI described a pathologic structure of the RV free wall with pedunculated tumor in its cavity. Three months later, on a repeated echocardiography, there were three individual masses. The patient underwent surgery and the pathohistologic report demonstrated thrombotic masses...
October 18, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27742240/implementation-of-a-quality-improvement-bundle-improves-echocardiographic-imaging-after-congenital-heart-surgery-in-children
#14
Anitha Parthiban, Jami C Levine, Meena Nathan, Jennifer A Marshall, Girish S Shirali, Stephen D Simon, Steven D Colan, Jane W Newburger, Geetha Raghuveer
BACKGROUND: Postoperative echocardiography after congenital heart disease surgery is of prognostic importance, but variable image quality is problematic. We implemented a quality improvement bundle comprising of focused imaging protocols, procedural sedation, and sonographer education to improve the rate of optimal imaging (OI). METHODS: Predischarge echocardiograms were evaluated in 116 children (median age, 0.51 years; range, 0.01-5.6 years) from two centers after tetralogy of Fallot repair, arterial switch operation, and bidirectional Glenn and Fontan procedures...
December 2016: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/27740477/4-d-ice-a-2-d-array-transducer-with-integrated-asic-in-a-10-fr-catheter-for-real-time-3-d-intracardiac-echocardiography
#15
Douglas Wildes, Warren Lee, Bruno Haider, Scott Cogan, Krishnakumar Sundaresan, David M Mills, Christopher Yetter, Patrick H Hart, Christopher R Haun, Mikael Concepcion, Johan Kirkhorn, Marc Bitoun
We developed a 2.5 ×6.6 mm (2) 2 -D array transducer with integrated transmit/receive application-specific integrated circuit (ASIC) for real-time 3-D intracardiac echocardiography (4-D ICE) applications. The ASIC and transducer design were optimized so that the high-voltage transmit, low-voltage time-gain control and preamp, subaperture beamformer, and digital control circuits for each transducer element all fit within the 0.019-mm (2) area of the element. The transducer assembly was deployed in a 10-Fr (3...
December 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27717424/the-role-of-echocardiography-and-intracardiac-exploration-in-the-evaluation-of-candidacy-for-biventricular-repair-in-patients-with-borderline-left-heart-structures
#16
Carlos M Mery, R Michael Nieto, Luis E De León, Shaine A Morris, Wei Zhang, John L Colquitt, Iki Adachi, Lauren C Kane, Jeffrey S Heinle, E Dean McKenzie, Charles D Fraser
BACKGROUND: Predictors for single ventricle palliation (SVP) or successful biventricular repair (BVR) in patients with borderline left-side heart structures are not well defined. The goal was to evaluate the role of echocardiography and intracardiac exploration in determining feasibility of BVR. METHODS: All neonates surgically treated from 1995 to 2015 with mitral valve (MV), aortic valve, or left ventricle end-diastolic dimension z score of -2 or less for whom management was controversial were included...
October 4, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27716710/transesophageal-echocardiography-guided-thrombectomy-of-intracardiac-renal-cell-carcinoma-without-cardiopulmonary-bypass
#17
Fouad Ghazi Souki, Michael Demos, Lilibeth Fermin, Gaetano Ciancio
Advanced renal cell carcinoma (RCC) resection has important anesthetic management implications, particularly when tumor extends, suprahepatic, into the right atrium. Use of transesophageal echocardiogram (TEE) is essential in identifying tumor extension and guiding resection. Latest surgical approach avoids venovenous and cardiopulmonary bypass yet requires special precautions and interventions on the anesthesiologist's part. We present a case of Level IV RCC resected without cardiopulmonary bypass and salvaged by TEE guidance and detection of residual intracardiac tumor...
October 2016: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/27692917/clinical-significance-of-spontaneous-echo-contrast-on-extracorporeal-membrane-oxygenation
#18
Shinya Unai, My-Le Nguyen, Daizo Tanaka, Nataliya Gorbachuk, Gregary D Marhefka, Hitoshi Hirose, Nicholas C Cavarocchi
BACKGROUND: Spontaneous echo contrast (SEC) is known to be a predisposition to thromboembolism and cerebrovascular accident. The aim of this study was to investigate the risk factors and the consequences of SEC in patients who were placed on venoarterial extracorporeal membrane oxygenation (VA-ECMO) because of cardiogenic shock. METHODS: Between January 2011 and December 2014, 98 patients underwent the insertion of VA-ECMO because of cardiogenic shock in our institution...
September 28, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27680664/left-atrial-appendage-closure-under-intracardiac-echocardiographic-guidance-feasibility-and-comparison-with-transesophageal-echocardiography
#19
Yae Matsuo, Petr Neuzil, Jan Petru, Milan Chovanec, Marek Janotka, Subbarao Choudry, Jan Skoda, Lucie Sediva, Masahiko Kurabayashi, Vivek Y Reddy
BACKGROUND: Transcatheter left atrial appendage closure is an alternative therapy for stroke prevention in atrial fibrillation patients. These procedures are currently guided with transesophageal echocardiography and fluoroscopy in most centers. As intracardiac echocardiography (ICE) is commonly used in other catheter-based procedures, we sought to determine the safety and effectiveness of intracardiac echocardiography-guided left atrial appendage closure with the Watchman device. METHODS AND RESULTS: A total of 27 patients (11 males, 77...
September 28, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27676162/comparison-between-iegm-based-approach-and-echocardiography-in-av-pv-and-vv-delay-optimization-in-crt-d-recipients-quicksept-study
#20
REVIEW
Massimo Giammaria, Gianluca Quirino, Enrico Cecchi, Gaetano Senatore, Paolo Pistelli, Mario Bocchiardo, Roberto Mureddu, Paolo Diotallevi, Eraldo Occhetta, Andrea Magnani, Mauro Bensoni, Catia Checchinato, Valentina Conti, Sandra Badolati, Antonio Mazza
BACKGROUND: AtrioVentricular (AV) and InterVentricular (VV) delay optimization can improve ventricular function in Cardiac Resynchronization Therapy (CRT) and is usually performed by means of echocardiography. St Jude Medical has developed an automated algorhythm which calculates the optimal AV and VV delays (QuickOpt™) based on Intracardiac ElectroGrams, (IEGM), within 2 min. So far, the efficacy of the algorhythm has been tested acutely with standard lead position at right ventricular (RV) apex...
March 2016: Indian Pacing and Electrophysiology Journal
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