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Novel Doppler‐guided subxyphoid approach to avoid coronary artery damage during left ventricular epicardial lead placement or ablation
Author(s) -
Fisher John D.,
Lentz Linnea,
Asleson Andrea,
McVenes Rick,
Yang Zhongping
Publication year - 2020
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/jce.14496
Subject(s) - medicine , doppler effect , cardiology , lead (geology) , pulsatile flow , artery , catheter , catheter ablation , angiography , ablation , radiology , physics , geomorphology , astronomy , geology
Background Subxyphoid active left ventricular epicardial (LVE) lead implants or VT ablation are attractive but remain a challenge due to concerns of coronary artery damage. We aimed to see if Doppler‐guided positioning could permit safe LVE lead placement without coronary angiography. We evaluated the feasibility of a Doppler flow‐guided subxyphoid epicardial screw‐in lead fixation in a swine model. Methods Acute subxyphoid access to the pericardial space was performed in an anesthetized swine model using a deflectable sheath and a modified needle‐derived Doppler flow meter. The audio signal and visual display from the Doppler flow meter were recorded. Coronary angiography was performed to verify the catheter location. A SelectSecure Model 3830 lead (Medtronic) was used to assess pacing in the procedure. Results In both of two swine, the deflectable catheter was inserted into pericardial space via subxyphoid access. The tip of the deflectable catheter with the Doppler was directed to several locations, from quiet (no nearby coronary artery expected) to typical rhythmic pulsatile sound locations which were maximal when superimposed on a coronary artery. Repeated coronary angiograms confirmed the expected findings. A 3830 active lead was fixed into a quiet location for LVE pacing, and confirmed by angiography as distant from a coronary artery. Conclusions Doppler‐guided subxyphoid epicardial screw‐in lead placement is feasible once the catheter tip is directed and stabilized in a desired LVE location. This obviates the need for repeated (or any) coronary angiography. The Doppler‐guided subxyphoid epicardial procedure may also be applicable for epicardial ventricular arrhythmia ablation procedures.