Abstract
Purpose
Post-implant lateral and postero-anterior chest X-rays (CXR) are often utilized to determine the final LV lead tip position after cardiac resynchronization therapy (CRT). This study sought to compare post-implant standard CXRs with intra-procedural rotational coronary venous angiography (RCVA) to localize the final LV lead position.
Methods
Sixty-four patients undergoing CRT (69.2 ± 11.4 years; males 68.7%; ischemic cardiomyopathy 59.4%; NYHA class 2.9 ± 0.5 and LV ejection fraction 24% ± 9%) were included in the study. RCVA was done by recording a rapid 4-second isocentric cine-loop from RAO 55° to LAO 55° (120 frames). Conventional CXR method (CC) and a composite CXR strategy (CM) based on two-view CXR were separately compared with RCVA.
Results
The most common pacing site was lateral (64.1%), followed by postero-lateral (23.4%) and antero-lateral (10.9%). In 73.4% (47) cases, the LV lead position was misclassified by CC as compared to RCVA. Among the 47 (73.4%) cases misclassified by CC approach, 35 had lateral LV lead position misclassified by CC as postero-lateral (77%), posterior (20%) and antero-lateral (3%). On the other hand, CM strategy classified the LV lead position correctly in 46 (71.9%) of the patients (p < 0.0001).
Conclusions
The composite CXR strategy is a useful method for post-procedure LV lead localization. Due to its simplicity, it can be widely applied in post-implant evaluation of LV lead position in CRT patients.
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Abbreviations
- CRT:
-
Cardiac resynchronization therapy
- LV:
-
Left ventricle
- RCVA:
-
Rotational coronary venous angiography
- LAO:
-
Left anterior oblique
- RAO:
-
Right anterior oblique
- CS:
-
Coronary sinus
- CXR:
-
Chest X-ray
- CC:
-
Conventional CXR method
- CM:
-
Composite CXR strategy
- AA:
-
Anterior
- AL:
-
Antero-lateral
- LL:
-
Lateral
- PL:
-
Postero-lateral
- PP:
-
Posterior
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Disclosures for potential conflicts of interest
Prabhat Kumar: no potential conflicts of interest; Dan Blendea: no potential conflicts of interest; Veena Nandigam: no potential conflicts of interest; Stephanie Moore receives honoraria from Boston Scientific Corp. and research grants from St. Jude Medical; E. Kevin Heist receives honoraria from Biotronik, Boston Scientific Corp., Medtronic, St. Jude Medical and Sorin group; receives research grants from Biotronik, St. Jude Medical (all modest) and is consultant to St Jude Medical; Jagmeet P Singh has received research grants from St. Jude Medical, Medtronic Inc., Boston Scientific Corp. and Biotronik; has received Honoraria / Speaker Fees from Medtronic Inc., Biotronik, Guidant Corp., St. Jude Medical and has served on advisory Board/Steering Committee and as Consultant to Boston Scientific Corp., Biotronik, St. Jude Medical, Medtronic, Philips Medical Systems. No stocks/No speakers bureau.
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Kumar, P., Blendea, D., Nandigam, V. et al. Assessment of the post-implant final left ventricular lead position: a comparative study between radiographic and angiographic modalities. J Interv Card Electrophysiol 29, 17–22 (2010). https://doi.org/10.1007/s10840-010-9497-1
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DOI: https://doi.org/10.1007/s10840-010-9497-1