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Related Experiment Video

Updated: May 8, 2026

Use of Two Intracorporeal Ventricular Assist Devices As a Total Artificial Heart

Use of Two Intracorporeal Ventricular Assist Devices As a Total Artificial Heart

Published on: May 11, 2018

Modified Park's Stitch Using Initial Systematic Cusp Alignment in Patients With Left Ventricular Assist Device.

Tomonari Uemura¹, Tomo Yoshizumi¹, Yasunari Hayashi¹

¹From the Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.

ASAIO Journal (American Society for Artificial Internal Organs : 1992)

|September 9, 2025

Summary

A modified Park

Keywords:

Park’s stitch aortic valve insufficiency destination therapy left ventricular assist device

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Last Updated: May 8, 2026

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Area of Science:

Cardiovascular Surgery
Medical Devices
Surgical Techniques

Background:

Aortic regurgitation is a complication in patients with left ventricular assist devices (LVADs).
Existing surgical techniques may not fully address cusp redundancy, leading to persistent aortic insufficiency.
Durable solutions are needed, especially for destination therapy patients.

Purpose of the Study:

To describe and evaluate a modified Park's stitch technique for eliminating aortic regurgitation in LVAD patients.
To assess the efficacy and durability of this modified technique.

Main Methods:

A two-step surgical approach involving systematic free margin alignment of aortic cusps.
Placement of interrupted 6-0 polypropylene sutures at the nodules of Arantius for coaptation.
Conventional Park's stitch with autologous pericardial pledgets for central closure, with alignment sutures retained.

Main Results:

Immediate complete elimination of aortic regurgitation in all six treated patients.
Median cross-clamp time of 30.5 minutes.
Sustained zero or trivial regurgitation in five of six patients at 8-month median follow-up.

Conclusions:

The modified Park's stitch with systematic free margin alignment effectively eliminates aortic regurgitation in LVAD patients.
This technique offers potential for improved durability, particularly for destination therapy.
The approach addresses cusp redundancy while preserving the benefits of the original Park's stitch.