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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement

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[Infective Endocarditis Caused by Abiotrophia defectiva Required Double-valve Replacement Using the Manouguian

Tomoya Higuchi¹, Sei Morizumi, Yoshiharu Enomoto

¹Ibaraki Prefectural Central Hospital, Cardiovascular Surgery, Kasama, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery

|December 6, 2023

Summary

Infective endocarditis caused by Abiotrophia defectiva led to severe aortic and mitral valve damage in a 39-year-old man. Surgical intervention included valve replacement using the Manouguian procedure.

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Area of Science:

Cardiology
Infectious Diseases
Surgical Innovation

Background:

Infective endocarditis (IE) poses significant risks to cardiac structures.
Abiotrophia defectiva is an uncommon but serious pathogen in IE.
Valve destruction necessitates complex surgical management.

Observation:

A 39-year-old male presented with IE attributed to Abiotrophia defectiva.
Transesophageal echocardiography showed extensive vegetation and destruction of the aortic and mitral valves.
Severe aortic and mitral regurgitation was present.

Findings:

Surgical debridement of vegetation was performed.
Double-valve replacement with mechanical prostheses was successfully executed.
The Manouguian procedure was utilized for the complex valve reconstruction.

Implications:

This case highlights the aggressive nature of Abiotrophia defectiva endocarditis.
Successful surgical management, including valve replacement, can be achieved in complex cases.
The Manouguian procedure offers a viable option for extensive valve destruction.