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https://www.readbyqxmd.com/read/29150300/permanent-his-bundle-pacing-to-replace-biventricular-pacing-for-cardiac-resynchronization-therapy
#1
Benjamin J Scherlag, Alexa Papaila
INTRODUCTION: Cardiac resynchronization therapy (CRT) or biventricular pacing (BIVP) has become a common procedure for the treatment of ventricular dyssynchrony in patients with heart failure, particularly in those with bundle branch block patterns (QRS durations >150ms) on the electrocardiogram (ECG). However, a large group of non-responders are made up of patients with dyssynchrony and QRS duration below 130ms. Recent studies have introduced permanent His bundle pacing as another method for achieving normalization of the QRS duration even in a majority of patients with right or left bundle branch block pattern on the ECG...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29148310/biventricular-repair-of-double-outlet-right-ventricle-preoperative-echocardiography-and-surgical-outcomes
#2
Hong Meng, Kun-Jing Pang, Shou-Jun Li, David Hsi, Jun Yan, Sheng-Shou Hu, Zhong-Dong Hua, Hao Wang
OBJECTIVE: To discuss the key anatomic features of double outlet right ventricle (DORV) assessed by preoperative echocardiography among patients treated with different types of biventricular repair. METHODS: Surgical and echocardiographic databases were queried to identify patients who had undergone biventricular repair for DORV and had adequate preoperative echocardiographic imaging. All patients underwent pre- and postoperative echocardiography and clinical evaluation following discharge...
May 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29146614/heart-rate-reduction-improves-biventricular-function-and-interactions-in-experimental-pulmonary-hypertension
#3
Olga Gomez, Kenichi Okumura, Osami Honjo, Mei Sun, Ryo Ishii, Bart Bijens, Mark K Friedberg
OBJECTIVES: To investigate mechanisms of heart rate (HR) reduction on biventricular function and interactions in experimental pulmonary arterial hypertension (PAH). METHODS: We compared cardiac-cycle mechanics and interventricular interactions in 15 sham, 8 monocrotaline-PAH, 9 PAH+carvedilol and 8 PAH+ivabradine rats. We used echocardiography to assess biventricular function, timing of cardiac- cycle events and septal position in PAH rats; and related HR reduction effect on biventricular function measured by echocardiography and conductance catheter...
November 16, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29146274/effects-of-angiotensin-neprilysin-inhibition-as-compared-to-angiotensin-inhibition-on-ventricular-arrhythmias-in-reduced-ejection-fraction-patients-under-continuous-remote-monitoring-of-implantable-defibrillator-devices
#4
Carlos de Diego, Luis González-Torres, José María Núñez, Raúl Centurión Inda, David A Martin-Langerwerf, Antonio D Sangio, Piotr Chochowski, Pilar Casasnovas, Julio C Blazquéz, Jesús Almendral
BACKGROUND: Angiotensin-neprilysin inhibition as compared to angiotensin inhibition decreased sudden cardiac death in reduced ejection fraction heart failure (rEFHF). The precise mechanism remains unclear. OBJECTIVE: To explore the effect of angiotensin-neprilysin inhibition on ventricular arrhythmias as compared to angiotensin inhibition in rEFHF patients with an implantable cardiac defibrillator (ICD) and remote monitoring. METHODS: We prospectively included 120 patients with ICD and: 1) New York Heart Association functional class≥ II, 2) left ventricular ejection fraction (LVEF) ≤40%, 3) remote monitoring...
November 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29143137/segmental-biventricular-analysis-of-myocardial-function-using-high-temporal-and-spatial-resolution-tissue-phase-mapping
#5
Marius Menza, Daniela Föll, Jürgen Hennig, Bernd Jung
OBJECTIVE: Myocardial dysfunction of the right ventricle (RV) is an important indicator of RV diseases, e.g. RV infarction or pulmonary hypertension. Tissue phase mapping (TPM) has been widely used to determine function of the left ventricle (LV) by analyzing myocardial velocities. The analysis of RV motion is more complicated due to the different geometry and smaller wall thickness. The aim of this work was to adapt and optimize TPM to the demands of the RV. MATERIALS AND METHODS: TPM measurements were acquired in 25 healthy volunteers using a velocity-encoded phase-contrast sequence and kt-accelerated parallel imaging in combination with optimized navigator strategy and blood saturation...
November 15, 2017: Magma
https://www.readbyqxmd.com/read/29136224/reliable-identification-of-benign-clinical-course-in-aneurysmal-subarachnoid-hemorrhage-a-simple-and-qualitative-algorithm
#6
Yifei Duan, James Wright, Christina Wright, Berje Shammassian, Curtis Tatsuoka, Nicholas Bambakidis
BACKGROUND: A reliable method to specifically identify low vasospasm risk in aneurysmal subarachnoid hemorrhage (aSAH) patients has not been previously proposed. OBJECTIVE: To develop a clinical algorithm using admission aSAH clinical severity and subarachnoid blood distribution to identify patients at low risk of clinical vasospasm. METHODS: Clinical severities, admission noncontrasted head computerized tomography (CT) scan, and incidences of vasospasm among 291 aSAH patients treated at our institution were evaluated...
November 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29135479/use-of-remote-pulmonary-artery-pressure-monitoring-cardiomems-system-in-total-artificial-heart-to-assess-pulmonary-hemodynamics-for-heart-transplantation
#7
Salman Gohar, Ziad Taimeh, Jeff Morgan, O H Frazier, Francisco Arabia, Andrew Civitello, Ajith Nair
The temporary total artificial heart (TAH-t) has been valuable as a bridge to transplantation in patients with biventricular failure. However, the challenges of accurately assessing pulmonary vascular resistance after TAH-t implantation can preclude these patients from heart transplantation, especially those with pre-existing pulmonary hypertension. The CardioMEMS Heart Failure System (St. Jude's Medical, Little Canada, MN) comprises a wireless pressure sensor that is implanted percutaneously in the pulmonary artery and transmits real-time measurements of pulmonary artery pressures...
November 8, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29128166/right-ventricle-dysfunction-and-pre-implantation-vasopressors-in-refractory-ards-supported-by-vv-ecmo
#8
Chiara Lazzeri, Manuela Bonizzoli, Giovanni Cianchi, Stefano Batacchi, Cristiana Guetti, Morena Cozzolino, Pasquale Bernardo, Adriano Peris
BACKGROUND: Acute respiratory distress syndrome (ARDS) has been shown to be frequently associated with haemodynamic instability requiring the use of vasopressors. To date, there is still some uncertainty in the use of veno-venous Extracorporeal Membrane Oxygenation (VV-ECMO) in haemodynamically unstable ARDS patients. METHODS: We therefore assessed whether patients receiving pre ECMO vasopressors had a worse prognosis and, furthermore, we reviewed the factors associated with the use of pre ECMO vasopressors in 92 consecutive patients with refractory ARDS treated with VV-ECMO...
October 31, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29128111/nocturnal-phantom-shock-cessation-with-zolpidem
#9
L McLean House, Rachel E McKay, John Thomas Eagan, Zachary L McCormick
A 77 year old man with a biventricular ICD-pacemaker complained of painful, electric jolts disturbing him nightly from sleep. Extensive work-up including device interrogation revealed no defibrillations or arrhythmia, and he was subsequently diagnosed with phantom shocks (PS). His nightly PS symptoms terminated after starting zolpidem 10 mg each night. To date, literature review reveals fifteen articles reporting 163 phantom shock (PS) cases. PS affects 5-9% of ICD recipients. Risk factors include psychiatric disease, atrial fibrillation, NYHA functional status III or greater, prior shock storm, and intraoperative awareness during ICD placement, with defibrillation threshold testing...
November 8, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/29118891/systolic-anterior-motion-of-mitral-valve-subchordal-apparatus-a-rare-echocardiographic-pattern-in-non-obstructive-hypertrophic-cardiomyopathy
#10
Jezreel L Taquiso, Stephanie Martha O Obillos, Joerelle V Mojica, Lauro L Abrahan, Elleen C Cunanan, Jaime Alfonso M Aherrera, Jose Donato A Magno
Systolic anterior motion (SAM) of the mitral valve or chordate is one characteristic seen in hypertrophic cardiomyopathy (HCM) either in obstructive or non-obstructive phenotypes. More often than not, the obstruction is caused by valvular rather than chordal SAM. We describe the role of echocardiography in identifying the actual anatomical location of the mitral valve apparatus involved in SAM and in assessing consequent left ventricular outflow tract (LVOT) obstruction in an otherwise asymptomatic patient...
October 2017: Cardiology Research
https://www.readbyqxmd.com/read/29113701/electrocardiographic-patterns-in-biventricular-pacing-delivered-by-second-generation-cardiac-resynchronization-devices
#11
Amirfarjam Fazelifar, Fatemeh Jorfi, Majid Haghjoo
BACKGROUND: With increasing use of cardiac resynchronization therapy (CRT), treating physicians should be familiar with different electrocardiographic (ECG) patterns of left ventricular (LV) lead and biventricular (BiV) pacing. However, there are a few publications on ECG patterns during BiV pacing. PURPOSE: This study was sought to determine different ECG patterns in patients with BiV pacing. METHODS: Twelve-lead ECGs during BiV pacing (right ventricular leads at apex and LV leads in one of the lateral coronary veins) were analyzed in 181 consecutive patients (121 male; mean age, 62...
November 4, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29111168/standardized-programming-to-reduce-the-burden-of-inappropriate-therapies-in-implantable-cardioverter-defibrillators-single-centre-follow-up-results
#12
U Boles, E Gul, L Fitzgerald, F Sadiq Ali, Christine Nolan, K Aldworth-Gaumond, D R Redfearn, A Baranchuk, B Glover, C Simpson, H Abdollah, K A Michael
BACKGROUND: Current algorithms and device morphology templates have been proposed in current Implantable Cardioverter-Defibrillators (ICDs) to minimize inappropriate therapies (ITS), but this has not been completely successful. AIM: Assess the impact of a deliberate strategy of using an atrial lead implant with standardized parameters; based on all current ICD discriminators and technologies, on the burden of ITS. METHOD: A retrospective single-centre analysis of 250 patients with either dual chamber (DR) ICDs or biventricular ICDs (CRTDs) over a (41...
October 27, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29106563/tailoring-device-settings-in-cardiac-resynchronization-therapy-using-electrograms-from-pacing-electrodes
#13
Elien B Engels, Masih Mafi-Rad, Ben J M Hermans, Alfonso Aranda, Antonius M W van Stipdonk, Michiel Rienstra, Coert O S Scheerder, Alexander H Maass, Frits W Prinzen, Kevin Vernooy
Aims: Left ventricular (LV) fusion pacing appears to be at least as beneficial as biventricular pacing in cardiac resynchronization therapy (CRT). Optimal LV fusion pacing critically requires adjusting the atrioventricular (AV)-delay to the delay between atrial pacing and intrinsic right ventricular (RV) activation (Ap-RV). We explored the use of electrogram (EGM)-based vectorloop (EGMV) derived from EGMs of implanted pacing leads to achieve optimal LV fusion pacing and to compare it with conventional approaches...
June 30, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29103857/phenotype-management-and-predictors-of-outcome-in-a-large-cohort-of-adult-congenital-heart-disease-patients-with-heart-failure
#14
Alexander Van De Bruaene, Edward J Hickey, Adrienne H Kovacs, Andrew M Crean, Rachel M Wald, Candice K Silversides, Andrew N Redington, Heather J Ross, Ana Carolina Alba, Filio Billia, Krishnakumar Nair, Lee Benson, Eric Horlick, Mark Osten, Jack Colman, Jane Heggie, Erwin N Oechslin, S Lucy Roche
OBJECTIVE: Although heart failure (HF) is the leading cause of premature death in adult congenital heart disease (ACHD), little population-specific data exist. This study reports early experience from a dedicated, sub-specialty adult congenital heart disease-heart failure (ACHD-HF) clinic, aiming to identify risk factors for adverse outcome. METHODS: Between 2012 and 2015, 126 patients (57% male) attended the ACHD-HF clinic. Baseline and follow-up data were analysed and compared across 4 anatomical/physiological subgroups: cyanotic ACHD, Fontan circulation (1V), biventricular circulation with a subaortic right ventricle (2V-RV) and biventricular circulation with a subaortic left ventricle (2V-LV)...
October 31, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29099541/pulmonary-arteriovenous-extracorporeal-membrane-oxygenation-to-avoid-pulmonary-overflow-during-total-artificial-heart-implantation
#15
Vakhtang Tchantchaleishvili, Jessica G Y Luc, Fabio Sagebin, Joshua K Wong, Howard T Massey
Total artificial hearts (TAH) can be used as a bridge to transplant or, occasionally, as destination therapy for patients with severe biventricular dysfunction. Not infrequently TAHs are placed in patients with severe low flow states, in which the lungs of these patients are unable to adjust rapidly to the "normal" right ventricular output of a TAH. These patients may develop variable degrees of pulmonary edema secondary to stress failure of the pulmonary capillaries requiring increased respiratory support, which can occasionally be fatal...
November 2, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29084001/assessing-the-borderline-ventricle-in-a-term-infant-combining-imaging-and-physiology-to-establish-the-right-course
#16
Meryl S Cohen
PURPOSE OF REVIEW: The purpose of this review is to describe the challenges associated with the diagnosis and treatment of children with borderline ventricles. A borderline ventricle is one in which there is concern that it will not be able to support its circulation. If a biventricular repair is attempted and fails, outcome is often poor. Thus, this early decision is important. RECENT FINDINGS: For the borderline right ventricle, options to add an additional source of pulmonary blood flow make the surgical strategy a bit more flexible than for patients with a borderline left ventricle...
October 27, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29082523/ventricular-mechanics-after-repair-of-subarterial-and-perimembranous-vsds
#17
Sit-Yee Kwok, Susanna So-Shan Yeung, Vivian Wing-Yi Li, Yiu-Fai Cheung
BACKGROUND: Emerging data suggest impaired biventricular function in adults late after repair of ventricular septal defect (VSD). We assessed and compared right (RV) and left ventricular (LV) mechanics in adolescents and adults after surgical closure of doubly committed subarterial and perimembranous VSDs. METHODS: A total of 75 subjects were studied: 29 patients after subarterial VSD repair (group I), 17 patients after perimembranous VSD repair (group II) and 29 age-matched controls (group III)...
October 30, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29076947/left-versus-biventricular-assist-devices-in-cardiac-arrest
#18
Erik J S Packer, Grete Slettom, Atle Solholm, Arve Mongstad, Rune Haaverstad, Vegard Tuseth, Ketil Grong, Jan Erik Nordrehaug
Maintaining adequate organ perfusion during cardiac arrest remains a challenge, and various assist techniques have been evaluated. We assessed whether a right ventricular impeller assist device (RVAD) in adjunct to a left ventricular impeller assist device (LVAD) is beneficial. Twenty anesthetized pigs were randomized to maximized circulatory support by percutaneously implanted left- or biventricular assist device(s) during 30 minutes of electrically induced ventricular fibrillation followed by three attempts of cardioversion...
October 20, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29073955/phenotype-and-clinical-outcomes-of-titin%C3%A2-cardiomyopathy
#19
Upasana Tayal, Simon Newsome, Rachel Buchan, Nicola Whiffin, Brian Halliday, Amrit Lota, Angharad Roberts, A John Baksi, Inga Voges, Will Midwinter, Alijca Wilk, Risha Govind, Roddy Walsh, Piers Daubeney, Julian W E Jarman, Resham Baruah, Michael Frenneaux, Paul J Barton, Dudley Pennell, James S Ware, Sanjay K Prasad, Stuart A Cook
BACKGROUND: Improved understanding of dilated cardiomyopathy (DCM) due to titin truncation (TTNtv) may help guide patient stratification. OBJECTIVES: The purpose of this study was to establish relationships among TTNtv genotype, cardiac phenotype, and outcomes in DCM. METHODS: In this prospective, observational cohort study, DCM patients underwent clinical evaluation, late gadolinium enhancement cardiovascular magnetic resonance, TTN sequencing, and adjudicated follow-up blinded to genotype for the primary composite endpoint of cardiovascular death, and major arrhythmic and major heart failure events...
October 31, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29073953/temporary-circulatory-support-in-u-s-children-awaiting-heart-transplantation
#20
Vamsi V Yarlagadda, Katsuhide Maeda, Yulin Zhang, Sharon Chen, John C Dykes, Mary Alice Gowen, Paul Shuttleworth, Jenna M Murray, Andrew Y Shin, Olaf Reinhartz, David N Rosenthal, Doff B McElhinney, Christopher S Almond
BACKGROUND: Extracorporeal membrane oxygenation (ECMO) has long served as the standard of care for short-term mechanical circulatory support in pediatrics. It is unknown whether newer-generation temporary circulatory support (TCS) devices afford children a meaningful survival advantage over ECMO. OBJECTIVES: This study sought to determine whether bridge-to-heart transplant survival with a TCS device is superior to ECMO after adjusting for patient differences. METHODS: All children ≤21 years of age listed for heart transplant from 2011 to 2015 who received a TCS device or ECMO as a bridge to transplant were identified using Organ Procurement and Transplantation Network data...
October 31, 2017: Journal of the American College of Cardiology
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