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Your search keyword '"Okonogi, Shuichi"' showing total 3 results
Start Over Author "Okonogi, Shuichi" Topic aortic valve
3 results on '"Okonogi, Shuichi"'

1. Aortic and tricuspid valve infective endocarditis caused by Streptococcus suis .

Author

Miki T, Ohki S, Obayashi T, Yasuhara K, Okonogi S, and Umeno T

Subjects
Animals, Anti-Bacterial Agents therapeutic use, Aortic Valve surgery, Aortic Valve Insufficiency diagnosis, Aortic Valve Insufficiency microbiology, Aortic Valve Insufficiency surgery, Bioprosthesis, Endocarditis, Bacterial diagnosis, Endocarditis, Bacterial surgery, Endocarditis, Bacterial transmission, Heart Valve Prosthesis, Heart Valve Prosthesis Implantation instrumentation, Humans, Male, Middle Aged, Pericardium transplantation, Streptococcal Infections diagnosis, Streptococcal Infections surgery, Streptococcal Infections transmission, Treatment Outcome, Tricuspid Valve surgery, Tricuspid Valve Insufficiency diagnosis, Tricuspid Valve Insufficiency surgery, Zoonoses, Aortic Valve microbiology, Endocarditis, Bacterial microbiology, Farmers, Streptococcal Infections microbiology, Streptococcus suis pathogenicity, Sus scrofa microbiology, Tricuspid Valve microbiology, Tricuspid Valve Insufficiency microbiology
Published
2019
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2. Comparison of the Long-Term Outcomes of Mechanical and Bioprosthetic Aortic Valves　- A Propensity Score Analysis.

Author

Minakata K, Tanaka S, Tamura N, Yanagi S, Ohkawa Y, Okonogi S, Kaneko T, Usui A, Abe T, Shimamoto M, Takahara Y, Yamanaka K, Yaku H, and Sakata R

Subjects
Aged, Aged, 80 and over, Follow-Up Studies, Heart Valve Prosthesis Implantation adverse effects, Humans, Middle Aged, Retrospective Studies, Aortic Valve, Bioprosthesis adverse effects, Heart Valve Prosthesis adverse effects, Thromboembolism etiology, Thromboembolism mortality
Abstract

Background: The aim of this study was to assess the long-term outcomes of aortic valve replacement (AVR) with either mechanical or bioprosthetic valves according to age at operation.Methods and Results:A total of 1,002 patients (527 mechanical valves and 475 bioprosthetic valves) undergoing first-time AVR were categorized according to age at operation: group Y, age <60 years; group M, age 60-69 years; and group O, age ≥70 years). Outcomes were compared on propensity score analysis (adjusted for 28 variables). Hazard ratio (HR) was calculated using the Cox regression model with adjustment for propensity score with bioprosthetic valve as a reference (HR=1). There were no significant differences in overall mortality between mechanical and bioprosthetic valves for all age groups. Valve-related mortality was significantly higher for mechanical valves in group O (HR, 2.53; P=0.02). Reoperation rate was significantly lower for mechanical valves in group Y (HR, 0.16; P<0.01) and group M (no events for mechanical valves). Although the rate of thromboembolic events was higher in mechanical valves in group Y (no events for tissue valves) and group M (HR, 9.05; P=0.03), there were no significant differences in bleeding events between all age groups., Conclusions: The type of prosthetic valve used in AVR does not significantly influence overall mortality.

Published
2017
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3. Twenty-year outcome of aortic valve replacement with St. Jude Medical mechanical valves in Japanese patients.

Author

Minakata K, Tanaka S, Okawa Y, Kaneko T, Okonogi S, Usui A, Abe T, Tamura N, Yanagi S, and Sakata R

Subjects
Adult, Aged, Aged, 80 and over, Aortic Valve physiopathology, Disease-Free Survival, Female, Heart Valve Diseases diagnosis, Heart Valve Diseases mortality, Heart Valve Diseases physiopathology, Heart Valve Prosthesis Implantation adverse effects, Heart Valve Prosthesis Implantation mortality, Hospital Mortality, Humans, Japan, Male, Middle Aged, Postoperative Complications mortality, Postoperative Complications surgery, Prosthesis Design, Reoperation, Retrospective Studies, Risk Factors, Time Factors, Treatment Outcome, Young Adult, Aortic Valve surgery, Heart Valve Diseases surgery, Heart Valve Prosthesis, Heart Valve Prosthesis Implantation instrumentation
Abstract

Background: Bioprostheses have become increasingly popular for aortic valve replacement (AVR) in recent years, but mechanical valves are still the standard choice, especially for younger patients. The aim of this study was to assess the very long-term outcomes in Japanese patients who underwent AVR with St. Jude Medical (SJM) mechanical valves., Methods and results: From 1991 to 2001, a total of 816 patients underwent AVR with SJM mechanical valves in 5 hospitals. Of these, 801 patients (mean age, 58.3±11.7 years) were analyzed in this study. There were 24 in-hospital deaths (3.0%). Mean follow-up duration was 11.6±6.7 years and the 10-year follow-up rate was 84.1%. Freedom from valve-related death at 5, 10, 15, and 20 years was 96.2%, 92.7%, 88.8%, and 86.6%, respectively. The linearized ratio of major bleeding events and thromboembolic events was 1.1% per patient-year and 1.0% per patient-year, respectively. Freedom from reoperation for the aortic prosthesis was 98.0% and 94.8% at 10 and 20 years, respectively., Conclusions: The SJM mechanical valve provided excellent long-term freedom from valve-related death and reoperation in patients undergoing AVR. Therefore, this valve should be recommended to younger patients who wish to avoid reoperation.

Published
2015
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