Unknown

Dataset Information

0

Cardioscopically Guided Beating Heart Surgery: Paravalvular Leak Repair.


ABSTRACT: PURPOSE:There remains a paucity of direct visualization techniques for beating-heart intracardiac procedures. To address this need, we evaluated a novel cardioscope in the context of aortic paravalvular leaks (PVLs) localization and closure. DESCRIPTION:A porcine aortic PVL model was created using a custom-made bioprosthetic valve, and PVL presence was verified by epicardial echocardiography. Transapical delivery of occlusion devices guided solely by cardioscopy was attempted 13 times in a total of three pigs. Device retrieval after release was attempted six times. Echocardiography, morphologic evaluation, and delivery time were used to assess results. EVALUATION:Cardioscopic imaging enabled localization of PVLs via visualization of regurgitant jet flow in a paravalvular channel at the base of the prosthetic aortic valve. Occluders were successfully placed in 11 of 13 attempts (84.6%), taking on average 3:03 ± 1:34 min. Devices were cardioscopically removed successfully in three of six attempts (50%), taking 3:41 ± 1:46 min. No damage to the ventricle or annulus was observed at necropsy. CONCLUSIONS:Cardioscopy can facilitate intracardiac interventions by providing direct visualization of anatomic structures inside the blood-filled, beating-heart model.

SUBMITTER: Rosa B 

PROVIDER: S-EPMC5572817 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature

altmetric image

Publications


<h4>Purpose</h4>There remains a paucity of direct visualization techniques for beating-heart intracardiac procedures. To address this need, we evaluated a novel cardioscope in the context of aortic paravalvular leaks (PVLs) localization and closure.<h4>Description</h4>A porcine aortic PVL model was created using a custom-made bioprosthetic valve, and PVL presence was verified by epicardial echocardiography. Transapical delivery of occlusion devices guided solely by cardioscopy was attempted 13 t  ...[more]

Similar Datasets

| S-EPMC3220753 | biostudies-literature
| S-EPMC9252130 | biostudies-literature
| S-EPMC9163305 | biostudies-literature
| S-EPMC6199255 | biostudies-literature
| S-EPMC5737448 | biostudies-literature
| S-EPMC6058346 | biostudies-literature
| S-EPMC8288689 | biostudies-literature
| S-EPMC8288704 | biostudies-literature
| S-EPMC10985156 | biostudies-literature
| S-EPMC8999580 | biostudies-literature