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An intraoperative test device for aortic valve repair

Title
An intraoperative test device for aortic valve repair
Authors
Berra, Ignacio G.Hammer, Peter E.Berra, SebastianIrusta, Alfredo OscarRyu, Seok ChangPerrin, Douglas P.Vasilyev, Nikolay V.Cornelis, Carlos JavierGarcia Delucis, Pablodel Nido, Pedro J.
Ewha Authors
류석창
SCOPUS Author ID
류석창scopus
Issue Date
2019
Journal Title
JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY
ISSN
0022-5223JCR Link

1097-685XJCR Link
Citation
JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY vol. 157, no. 1, pp. 126 - 132
Keywords
aortic valve repairdevicepressurizeviewer
Publisher
MOSBY-ELSEVIER
Indexed
SCIE; SCOPUS WOS
Document Type
Article

Proceedings Paper
Abstract
Objective: Aortic valve repair is currently in transition from surgical improvisation to a reproducible operation and an option for many patients with aortic regurgitation. Our research efforts at improving reproducibility include development of methods for intraoperatively testing and visualizing the valve in its diastolic state. Methods: We developed a device that can be intraoperatively secured in the transected aorta allowing the aortic root to be pressurized and the closed valve to be inspected endoscopically. Our device includes a chamber that can be pressurized with crystalloid solution and ports for introduction of an endoscope and measuring gauges. We show use of the device in explanted porcine hearts to visualize the aortic valve and to measure leaflet coaptation height in normal valves and in valves that have undergone valve repair procedures. Results: The procedure of introducing and securing the device in the aorta, pressurizing the valve, and endoscopically visualizing the closed valve is done in less than 1 minute. The device easily and reversibly attaches to the aortic root and allows direct inspection of the aortic valve under conditions that mimic diastole. It enables the surgeon to intraoperatively study the valve immediately before repair to determine mechanisms of incompetence and immediately after the repair to assess competence. We also show its use in measuring valve leaflet coaptation height in the diastolic state. Conclusions: This device enables more relevant prerepair valve assessment and also enables a test of postrepair valve competence under physiological pressures.
DOI
10.1016/j.jtcvs.2018.07.113
Appears in Collections:
공과대학 > 휴먼기계바이오공학과 > Journal papers
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