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In vivo study of a reserved atrial septal puncture area patent foramen ovale occluder

Published online by Cambridge University Press:  06 September 2022

Haibin Jiang
Affiliation:
Department of Cardiology, Wuxi NO. 2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China
Suyan Cao
Affiliation:
Department of Cardiology, Wuxi NO. 2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China
Renrong Wang
Affiliation:
Department of Cardiology, Wuxi NO. 2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China
Shuya Wang
Affiliation:
Department of Cardiology, Wuxi NO. 2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China
Ziqian He
Affiliation:
Department of Cardiology, Wuxi NO. 2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China
Xin Xu
Affiliation:
Department of Cardiology, Wuxi NO. 2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China
Chengjian Yang
Affiliation:
Department of Cardiology, Wuxi NO. 2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China
Xiaoxiao Liu*
Affiliation:
Department of Cardiology, Wuxi NO. 2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China
*
Author for correspondence: Xiaoxiao Liu, Department of Cardiology, Wuxi NO.2 People’s Hospital, Nanjing Medical University, Wuxi 214000, Jiangsu, China. E-mail: pjclxx@163.com

Abstract

Purpose:

After patent foramen ovale interventional closure, puncture of the interatrial septum through the occluder is difficult but sometimes needed for further interventional treatment. This paper presents findings from an in vivo experimental study of a reserved atrial septal puncture area patent foramen ovale occluder.

Materials and methods:

A patent foramen ovale model was established in canines using trans-septal puncture of the fossa ovale and high-pressure balloon dilation. Then, patent foramen ovale closure was performed with a reserved atrial septal puncture area and all canines were raised for 3 months. Then, the occluder was crossed and left atrial angiography was performed on the septal area with the occluder. Finally, DSA angiography, echocardiography, and histology were used to evaluate the performance and feasibility of the reserved atrial septal puncture area.

Results:

A patent foramen ovale model was successfully established in 10 canines using the atrial septal puncture method. The average diameter of the patent foramen ovale was 3.77 ±0.19 mm, and the patent foramen ovale was successfully closed in all canines using a reserved atrial septal puncture area. As assessed using transoesophageal echocardiography, the new occluder exhibited an ideal position and was occluded entirely without a residual shunt intraoperatively and postoperatively. A 100% success rate of atrial septum puncture was achieved across the new occluder. The occluders were completely endothelialised 3 months post-implantation.

Conclusions:

The reserved atrial septal puncture area was effective in patent foramen ovale closure and exhibited positive sealing performance and biological compatibility. Trans-septal puncture was feasible and effective after reserved atrial septal puncture area patent foramen ovale closure.

Type
Original Article
Copyright
© The Author(s), 2022. Published by Cambridge University Press

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