Journal: HeartRhythm Case Reports

Article Title: Successful pulmonary vein isolation and left atrial roofline ablation via jugular access using a novel cryoballoon to treat persistent symptomatic atrial fibrillation in a patient with congenital interruption of the inferior vena cava

doi: 10.1016/j.hrcr.2025.07.023

Figure Lengend Snippet: High-density bipolar voltage maps acquired using the CARTO 3 system, before and after cryoballoon ablation. (A, C) Pre-ablation voltage maps, posteroanterior (PA) and superior views. (B, D) Post-ablation voltage maps under the same views, confirming successful pulmonary vein isolation and roofline ablation. Over 80% of the left atrial posterior wall was isolated, as indicated by the extensive low-voltage area ( red ).

Article Snippet: Three-dimensional CT images of the LA and PV were merged using an electro-anatomical mapping system (CARTO; Biosense Webster).

Techniques: Isolation

Journal: BMC Cardiovascular Disorders

Article Title: A case report of sinus node–sparing hybrid ablation for refractory sinus tachycardia following cardioneuroablation for sinus node dysfunction

doi: 10.1186/s12872-025-05255-w

Figure Lengend Snippet: A A baseline biplane high-density three-dimensional electrocanatomical endocardial activation map (Advisor HD Grid catheter and Ensite Precision, Abbott, St Paul, MN, USA) of right atrium [superior vena cava (SVC), high right atrium (HRA), low right atrium (LRA), tricuspid annulus (TA)/His area and inferior vena cava (IVC) in LAO (left panel) and RAO view (right panel)]. It was generated from femoral access to validate the baseline earliest local activation time of the sinoatrial node (SN area) during sinus rhythm of 85 bpm. B VATS view of the right atrium after opening the pericardium. Crista terminalis line creation via a bipolar isolator synergistic surgical ablation system (AtriCure, Mason, OH, USA). C Right-sided thoracoscopic view of the right atrium showing the sinus node–sparing hybrid lesion set. The illustration depicts the epicardial surface of the right atrium and caval veins from a right-sided thoracoscopic perspective. The sinus node region (yellow star) is first identified by combined endocardial activation mapping and epicardial visualization and is deliberately spared. Purple solid lines indicate the planned bipolar epicardial ablation lines: the SVC line at the right atrium–superior vena cava junction to modify/isolates SVC myocardial sleeves; the IVC line at the right atrium–inferior vena cava junction; and the crista terminalis line connecting both caval lesions along the crista terminalis to limit preferential sinus-node exit pathways. Abbreviations: RAA – right atrial appendage; SVC – superior vena cava; IVC – inferior vena cava; RSPV/RIPV – right superior/inferior pulmonary vein; PVI – pulmonary vein isolation; SN – sinus node

Article Snippet: Fig. 1 A A baseline biplane high-density three-dimensional electrocanatomical endocardial activation map (Advisor HD Grid catheter and Ensite Precision, Abbott, St Paul, MN, USA) of right atrium [superior vena cava (SVC), high right atrium (HRA), low right atrium (LRA), tricuspid annulus (TA)/His area and inferior vena cava (IVC) in LAO (left panel) and RAO view (right panel)].

Techniques: Activation Assay, Generated, Isolation

Journal: European Heart Journal: Case Reports

Article Title: A case report of right bundle branch block and junctional beats during ablation at the right ventricle outflow tract: metallic occluder’s unanticipated effect

doi: 10.1093/ehjcr/ytae054

Figure Lengend Snippet: Electrophysiological study and radiofrequency catheter ablation in the right ventricular outflow tract. ( A ) Baseline and electrograms in right ventricular outflow tract on intracardiac electrocardiogram. ( B ) Three-dimensional electroanatomic mapping of local right ventricular outflow tract (arrow shows the earliest activation in this area); ( C ) right bundle branch block (arrows) and junctional beat (arrowheads) during radiofrequency catheter ablation at the first target; ( D ) the location of the ablation catheter and the occluder on fluoroscopy. ( E and F ) The earliest electrogram in right ventricular outflow tract on intracardiac electrocardiogram ( E ) and three-dimensional electroanatomic mapping ( F ), arrow shows the earliest activation. ( G ) High-frequency potential (transverse line) and His bundle potential (arrows) in right ventricular outflow tract. ( H ) Three-dimensional electroanatomic mapping of the occluder, the dot target represents the His bundle potential. HPS, His–Purkinje system; LAO, light anterior oblique; RAO, right anterior oblique.

Article Snippet: Activation mapping was performed using an irrigated ablation catheter (OmniCool, APT Medical Inc, China) in conjunction with a three-dimensional (3D) electroanatomic mapping system (HT Viewer, APT Medical Inc, China).

Techniques: Activation Assay, Blocking Assay

Journal: European Heart Journal: Case Reports

Article Title: A case report of right bundle branch block and junctional beats during ablation at the right ventricle outflow tract: metallic occluder’s unanticipated effect

doi: 10.1093/ehjcr/ytae054

Figure Lengend Snippet: Electrophysiological study and radiofrequency catheter ablation in the left ventricular outflow tract. ( A and C ) The earliest electrogram in left ventricular outflow tract on intracardiac electrocardiogram ( A ) and three-dimensional electroanatomic mapping ( C ). The arrow in A shows the high-frequency potential, and the arrowhead shows the His bundle potential. The arrow from A to C shows the earliest activation. ( B and D ) The earliest electrogram above right coronary cusp on intracardiac electrocardiogram ( B ) and three-dimensional electroanatomic mapping ( D ). LAO, light anterior oblique; RAO, right anterior oblique.

Article Snippet: Activation mapping was performed using an irrigated ablation catheter (OmniCool, APT Medical Inc, China) in conjunction with a three-dimensional (3D) electroanatomic mapping system (HT Viewer, APT Medical Inc, China).

Techniques: Activation Assay

Journal: Europace

Article Title: Efficacy and safety of pulsed field ablation for accessory pathways: a pilot study

doi: 10.1093/europace/euae139

Figure Lengend Snippet: Successful ablation of AP at LALW. ( A ) AVRT was induced after RVA pacing. From top to bottom, the following tracings are displayed: surface ECG, CS electrograms from proximal (CS 9–10 ) to distal (CS 1–2 ), distal (HB 1–2 ), and proximal (HB 3–4 ) His bundle electrograms, distal (Bi-Abl) bipolar and unipolar (Uni-Abl) recording from the PFA catheter, and RVA electrograms. Earliest retrograde atrial activation with bipolar recording was at LALW during RVA pacing navigated by 3D electroanatomical mapping ( B , green point) and fluoroscopy ( C ), and the morphology of unipolar electrograms of ERAA was QS. Note the distinct APP inserting (orange arrow) between ERAA (black arrow) and retrograde ventricular activation (V). Successful ablation was achieved after one pulse train delivery ( D , 1-PFA modality), and three pulse train deliveries ( E , 3-PFA modality) at the same AS were applied. ( F ) Transient AV conduction block for a short period after the adenosine injection, then left ventricular pacing confirmed terminating conduction over AP. Bonus lesions (red points) were created near the target with 3-PFA modality. Sustained AP conduction termination was observed by RVA pacing. Abl, ablation catheter; AP, accessory pathway; APP, accessory pathway potential; AS, ablation site; AVRT, atrioventricular reentrant tachycardia; CS, coronary sinus; ERAA, earliest retrograde atrial activation; LALW, left anterolateral wall; LAO, left anterior oblique; LL, left lateral; MA, mitral annulus; PFA, pulsed field ablation; RAO, right anterior oblique; RVA, right ventricular apex.

Article Snippet: The image of TA or MA, HB, and CS was labelled when the PFA catheter moved along the cavity surface guided by a three-dimensional electroanatomical mapping system (3D-EAMS, ColumbusTM 3D EP Navigation system, Shanghai MicroPort EP MedTech Co., Ltd., China).

Techniques: Activation Assay, Blocking Assay, Injection