Blaabjergchandler0742

[This corrects the article DOI 10.1002/joa3.12429.].[This corrects the article DOI 10.1002/joa3.12416.].We have described some unusual findings of radiofrequency interference with ICD functioning during AV nodal ablation, guiding the reader to the possible explanation of the phenomena.Macroreentrant atrial tachycardia within the right atrium is the dominant mechanism in patients with prior surgical repair of atrial septal defects, with dual-loop circuits much more common than single-loop circuits. This case highlights the importance of clinical history for predicting arrhythmia mechanisms. Considering prior cardiac surgery may assist in preprocedural preparations and discussions regarding potential risks and benefits of catheter ablation.The transition of the tachycardia from narrow to wide by a spontaneous atrial premature contraction causing a long-short sequence and right bundle branch block.Hemophilia A (HA) is a rare bleeding disorder characterized by reduced factor VIII (FVIII) activity and consequently spontaneous bleeding. Since the introduction of prophylaxis with safer FVIII concentrates, people with HA are ageing. Interestingly, they are developing cardiovascular diseases as their non-hemophilia counterparts. We describe a 48-year-old patient with severe HA who presented a third-degree atrioventricular block. A DDDR pacemaker was implanted under supervision of the Hematology Clinics. There were no adverse events during the procedure. The procedure was safe, and it should be performed under the supervision of a hemophilia expert.18 F-FDG-PET/CT is promising tool to visualize not only transvenous lead infection but also epicardial lead infection.A 33-year-old male who underwent surgery for Tetralogy of Fallot presented with atrial flutter. Electrophysiology study revealed concealed entrainment along the mid lateral right atrium with postpacing interval shorter than the tachycardia cycle length. Ablation at this site terminated the tachycardia. The presence of shorter PPI than TCL was due to a large virtual electrode leading to downstream capture of far field tissue. This case demonstrates that sites showing PPI shorter than TCL are in a slow conducting narrow critical isthmus and hence constitute good ablation targets.The association of situs inversus totalis and left ventricular noncompaction is very rare and poses several and unique challenges if endo-epicardial ablation has to be performed, both for anatomical access to the target area and for arrhythmia complexity. We report a case of incessant ventricular tachycardia with endo-epicardial involvement that required ablation in both surfaces to obtain final noninducibility.The common ostium of left and right inferior PVs is an extremely rare variant which was only reported in 16 cases undergoing catheter ablation. Thus, electrophysiologists should be careful about such an exremely rare PV variants for the safety and efficacy of ablation. Pre-procedural CTA is a valuable tool to decide on the ablation strategy in patients with such a very rare PV anomaly.We report a case with a thrombus-like image on pulmonary valve detected by intracardiac echocardiography before transseptal puncture for atrial fibrillation (AF) ablation. The multimodality assessment provided diagnosis of the imaging artifact and exclusion from the harmful mass. This finding could be useful for a safety management of AF ablation and avoidance of an unnecessary interruption of the procedure.A 51-year-old man, who had a history of open heart surgery for corrected transposition of great arteries, presented with palpitation due to atrial tachycardia. see more A propagation map using three-dimensional electroanatomical mapping (CARTO3) showed atrial flutter and underwent linear ablation successfully. This case highlights the difficulty of diagnosis before mapping following a complicated cardiac operation and the usefulness of three-dimensional mapping.

Early detection of cardiac involvement in patients with sarcoidosis is important but currently unresolved. The aim of this study was to elucidate the utility of frequency domain microvolt T-wave alternans (TWA), signal-averaged ECG (SAECG), and heart rate turbulence (HRT) using 24-hour Holter ECG for detecting cardiac involvement in patients with pulmonary sarcoidosis.

This study consisted of consecutive 40 pulmonary sarcoidosis patients (11 males, 62±13years) who underwent 24-hour Holter monitoring with and without cardiac involvement. All patients underwent frequency domain TWA, SAECG, and HRT using 24-hour Holter monitoring. Patients with atrial fibrillation pacing or wide QRS electrocardiogram were excluded.

After 14 patients were excluded, a total of 26 patients (six males, 59±14years) were evaluated. Seven patients had cardiac involvement (cardiac sarcoidosis [CS] group). On the Holter SAECG, duration of low-amplitude signals<40μV in the terminal filtered QRS complex (LAS40) was significantly higher, and root mean square voltage of the terminal 40ms of the filtered QRS complex (RMS40) was significantly lower in the CS group compared with the non-CS group (LAS40 61.4±35.9 vs 37.6±9.2ms;

=.018, RMS40 11.4±10.3 vs 23.6±13.2ms;

=.023). Prevalence of positive late potential (LP) was also significantly higher in the CS group than that in the non-CS group (85.7% vs 31.5%;

=.026). The sensitivity, specificity, positive, and negative predictive values of LP for identifying patients with cardiac involvement were 85.7%, 68.4%, 50.0%, and 92.8%, respectively.

Holter SAECG may be useful for detecting cardiac involvement in patients with pulmonary sarcoidosis.

Holter SAECG may be useful for detecting cardiac involvement in patients with pulmonary sarcoidosis.

Early repolarization (ER) pattern is diagnosed when the J-point is elevated on the patient's electrocardiogram. The aim of this study was to evaluate signal-averaged electrocardiography (SAECG) in patients with ER pattern.

Subjects were divided into three groups 1-patients with normal ECG pattern (control group); 2-patients with J-point elevation in the inferior leads; and 3-patients with J-point elevation in non-inferior leads.

The mean filtered QRS duration in groups with J-point elevation in inferior leads and non-inferior leads and in the control, was 86.4±23.4msec, 84.8±26.6msec, and 85.8±24.8 msec, respectively, indicating no significant difference across the three groups. The mean duration of terminal QRS<40µV was 21.2±4.2msec, 22.8±4.6msec, and 23.1±4.5msec in the mentioned groups, respectively, without a significant difference between the groups. Additionally, the mean root-mean-square voltage of terminal 40msec was 34.5±8.3µV, 35.3±8.6µV, and 35.7±9.2µV in patients with increased J-point in inferior leads, non-inferior leads, and the control group, respectively, showing no difference between the groups.