A 57-year-old man with nonischemic car-diomyopathy and permanent atrial fibrillation was implanted with a cardiac resynchronization therapy pacemaker (CRT-P) prior to an atrioven-tricular (AV) node ablation. The electrocardiogram prior to CRT-P implant showed a narrow QRS (duration 88 ms) but...
AV node ablation: In this procedure, the doctor may insert a catheter into a vein near the thigh and slide it up to the AV node (a nerve that conducts electrical impulses between the top and bottom chambers of the heart). Radiofrequency energy is sent through the catheter to destroy the...
Since it induces conduction block in the AV node, adenosine has diagnostic utility in patients with narrow QRS complex tachycardia. Similarly, adenosine could be of the most value in hemodynamically stable wide QRS tachycardia (WQRST) with 1:1 VA conduction when there is difficulty in ...
AVnodereentranttachycardiaCatheterablationStevenKalbfleischandAshishGangasaniandJohnHummelSDOSHeart RhythmKalbfleisch S,Gangasani A,Hummel J.Narrowcomplextac-hy-cardia after a prior ablation:what is the mechanism-. Heart Rhythm . 2009Narrowcomplextac-hy-cardia after a prior ablation:what is the ...
A separate indication for CRT is the pace/ablate strategy, which describes implantation of a CIED for bradytherapy followed by total AV node ablation, in patients who have had difficulty with AF rate control [47]. The APAF-CRT trial was an open-label, blinded outcomes trial where 133 patient...
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frequent blocked PACs and sustained periods of 2:1 AVB of sinus beats have not been reported in patients with double-fire AV conduction. Finally, double-fire AV conduction rarely responds toantiarrhythmic agents, instead requiring treatment withcatheter ablationof the slow pathway to the AV node.5...
Twist1 expression in CAFs is related to tumor size, lymph node metastasis, and depth of invasion, as well as poor survival in patients with gas- tric cancer, especially in patients with diffuse-type gastric cancer. Besides gastric cancer, Twist can be expressed in both cancer cells and CAFs...
Curative treatment of GEP-NETs is only possi- ble by surgical or endoscopic resection. This also refers to patients with limited (regional) disease or oligometastatic situation, whereas palliative surgery or ablation for symptom relief may also be consid- ered in selected cases [24–26]. Over ...
73 With respect to the PD-1 axis, there is preclinical evidence that manipulation of these pathways can influence allograft tolerance. For example, antibody-mediated ablation of the PD-L1 pathway hastened cardiac transplant rejection in wild-type mice as well as CD28 knockout mice, whereas ...