Results 51 to 60 of about 123,390 (256)

Left Bundle Branch Pacing in Transthyretin Cardiac Amyloidosis and Alternating Bundle Branch Block

JACC: Case Reports, 2020
Progressive conduction system disease affects patients with transthyretin cardiac amyloidosis, often requiring permanent pacing as the His-Purkinje system is affected. We present a case of left bundle branch pacing in a patient with transthyretin cardiac
Taha Ahmed, MD, Samra Haroon Lodhi, MBBS, Hassan Lak, MD, Jae Lee, MD, Mazen Hanna, MD, Roy Chung, MD   +5 more
doaj   +1 more source

Brugada-type ECG associated with pectus excavatum [PDF]

, 2015
Brugada phenocopies (BrP) are new clinical entities characterized by an ECG pattern that is identical to type 1 or type 2 Brugada pattern, despite the absence of the true congenital Brugada syndrome (BrS).
Ghazali, Aiham, Marchetti, Marco, Oriot, Denis, Sierecki, M.   +3 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Sudden unexpected improvement in the atrioventricular conduction. What is the mechanism?

Indian Pacing and Electrophysiology Journal, 2021
The 12-lead electrocardiogram (ECG) of a 79-year-old male patient with recurrent pre-syncope showed irregular sinus rhythm with constant PR interval and left bundle branch block (LBBB) with intermittently blocked P waves. The beat following the blocked P
Anunay Gupta, Kartikeya Bhargava, Dinkar Bhasin, Sourabh Agstam, Hermohander Singh Isser   +4 more
doaj   +1 more source

Acquired heart block: A possible complication of patent ductus arteriosus in a preterm infant [PDF]

, 2008
A large patent ductus arteriosus (PDA) is a frequently encountered clinical problem in extremely low birth weight (ELBW) infants. It leads to an increased pulmonary blood flow and in a decreased or reversed diastolic flow in the systemic circulation ...
Andreas Holzinger, Baylen B, Bucci G, Christoph Döhlemann, Evans N, Georg Münch, Griffin JH, Hans-Georg Dietz, Holger Till, Limperopoulos C, Mendicini M, Monika Grasser, Rashmi Mittal, Skelton R, Walther FJ   +14 more
core   +1 more source

Identifying transcription factors controlling the basal expression of human MRP4 highlights a substantial role for Sp1

FEBS Open Bio, EarlyView.
The MRP4 transporter exports several drugs and signaling molecules. Here, we identified key promoter elements regulating basal MRP4 expression. Using reporter assays, we defined a conserved region with essential Sp1 and contributory Ets sites, which controlled basal MRP4 expression.
Debora Singer, Angelique Kragl, Katrin Ziems, Juliane Glaubitz, Sophie Grammbauer, Susanne Hildebrandt, Mladen V. Tzvetkov, Gabriele Jedlitschky   +7 more
wiley   +1 more source

Rituximab Induced Left Bundle Branch Block

Heart Views, 2015
Rituximab (a monoclonal antibody directed against CD 20) therapy can be acutely complicated by infusion reactions and cardiac arrhythmia on rare occasions.
Mujeeb Sheikh, Ankush Moza, Blair P Grubb   +2 more
doaj   +1 more source

Microelectrode and His Bundle Studies on Type I and II Second Degree A-V Block [PDF]

, 1973
Mobitz classified second degree A-V block into two categories. Mobitz type I, or Wenckebach block, is characterized by a gradual prolongation of the P-R interval preceding the dropped ventricular beat.
Moore, E. Neil, Spear, Joseph F.
core   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Left Bundle Branch Conduction Recovery Following Left Bundle Branch Pacing in a Heart Failure Patient

JACC: Case Reports, 2019
This report presents the application of left bundle branch pacing as a cardiac resynchronization therapy in a patient with systolic heart failure and complete left bundle branch block.
Weiwei Zhang, MD, Jingjuan Huang, MD, PhD, Yiding Qi, MS, Xuerui Shi, MS, Fei Wang, MS, Xiaohong Zhou, MD, Ruogu Li, MD, PhD   +6 more
doaj   +1 more source