Pulmonary vein dilatation in a case of total pulmonary vein occlusion: Contemporary approach using a combination of 3D-mapping system and image integration

2015 ◽  
Vol 88 (7) ◽  
pp. E227-E232 ◽  
Author(s):  
Sebastian Hilbert ◽  
Philipp Sommer ◽  
Andreas Bollmann

2016 ◽  
Vol 57 (3) ◽  
pp. 299-303 ◽  
Author(s):  
Christian Blockhaus ◽  
Jan Schmidt ◽  
Muhammed Kurt ◽  
Lukas Clasen ◽  
Christoph Brinkmeyer ◽  
...  




2021 ◽  
Vol 30 (4) ◽  
pp. 626-628
Author(s):  
Katherine Romanowicz ◽  
Muhammad Athar ◽  
Alexandru Costea


Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Yalçin Gökoglan ◽  
Mahmut F Günes ◽  
Luigi Di Biase ◽  
Carola Gianni ◽  
Sanghamitra Mohanty ◽  
...  

Introduction: Bipolar voltage mapping detects areas of scar and guides ablation of VT. The role of endocardial unipolar voltage mapping is not well defined. We examined the endo-epicardial substrate in a mixed cohort of patients with structural heard disease (SHD) to determine whether an endocardial unipolar low voltage area predicts the presence and location of an epicardial scar. Results: Data from 24 consecutive patients with SHD (11 ICM, 6 NICM, 3 HCM, 2 ARVC, 1 myocarditis, 1 Brugada) with a detailed (mean points per map 200) combined endocardial-epicardial substrate mapping were retrospectively reviewed. Maps were obtained using a 3D mapping system (CARTO 3) and normal thresholds used were ≤1.5 mV for bipolar voltage, and ≤5.5 (RV) or ≤8.3 mV (LV) for unipolar voltage. Mapping was performed in the LV in 17 patients, in the RV in 6 patients, in both in 1 patient. An endocardial unipolar low voltage area was found in 21/25 maps. In 12/21 maps there was no corresponding epicardial scar, while in 3/4 cases an epicardial scar was detected despite a negative unipolar map (PPV=43%, NPV=25%, P=NS; Fig. 1). In the 9 cases with both positive endocardial unipolar and epicardial bipolar maps, the epicardial scar was found in the corresponding ventricular region of the endocardial low-voltage area, although unipolar area had a tendency to overestimate the area of the scar (115 vs 95 cm 2 ). Conclusion: In this series of patients with SHD, analysis of unipolar voltage maps could not reliably predict the epicardial arrhythmogenic substrate. There is a modest correlation between areas of endocardial unipolar low voltage and epicardial scars (57% of patients with an abnormal unipolar map had a normal epicardial substrate). Moreover, an epicardial substrate cannot be safely excluded based on a normal unipolar endocardial map. Fig. 1 Abnormal bipolar epicardial map (left) with corresponding normal unipolar endocardial map (right) in a patient with ARVC. Pink dots represent area of defragmentation.



Author(s):  
Navan Tanjeem Hossain ◽  
Rahat Mahmood Khan ◽  
Saifur Rahman ◽  
Md. Ziaur Rahman Khan




Author(s):  
Maurizio Del Greco ◽  
Massimiliano Marini ◽  
Fabrizio Guarracini ◽  
Francesco Peruzza




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