Masaki Miyasaka

Dr. Masaki Miyasaka


Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 April 2018 in JACC: Cardiovascular Interventions
Verified
Journal Article
Closed access
MMMasaki Miyasaka
Masaki Miyasaka
NTNorio Tada
Norio Tada
MTMasataka Taguri
Masataka Taguri
SKShigeaki Kato
Shigeaki Kato
YEYusuke Enta
Yusuke Enta
KHKentaro Hayashida
Kentaro Hayashida

14 December 2020 in Open Heart
Verified
Journal Article
Open access
PDF file
YEYusuke Enta
Yusuke Enta
MMMasaki Miyasaka
Masaki Miyasaka
MTMasataka Taguri
Masataka Taguri
NTNorio Tada
Norio Tada
MHMasaki Hata
Masaki Hata
KHKentaro Hayashida
Kentaro Hayashida
Objectives Patients’ backgrounds and clinical outcomes in urgent/emergent/salvage transcatheter aortic valve replacement (Em-TAVR) remain unclear. We investigated patient characteristics and the mortality in Em-TAVR and the predictors for the need for Em-TAVR. Methods We consecutively enrolled 1613 patients undergoing TAVR for severe aortic stenosis between October 2013 and July 2016 from the Optimised transCathEter vAlvular interventioN (OCEAN)-transcatheter aortic valve implantation (TAVI) registry. The urgency was based on the European System for Cardiac Operative Risk Evaluation II. Urgent, emergent or salvage were included with the Em-TAVR group and elective with the El-TAVR group. Results Em-TAVR was observed in 87 (5.4%) patients. A higher Clinical Frailty Scale (CFS), peripheral artery disease (PAD), hypoalbuminaemia, reduced left ventricular ejection fraction (LVEF) and preoperative at least moderate mitral regurgitation (MR) predicted the need for the Em-TAVR by the multivariate logistic regression analysis. The Em-TAVR group had the higher Society of Thoracic Surgeons Score (13.7 (IQR 8.2–21.0) vs 6.5 (IQR 4.6–9.2); p<0.001) and higher 30-day mortality (9.2% vs 1.3%; p<0.001) than the El-TAVR group. Accordingly, Kaplan-Meier analysis showed that the cumulative mortality was higher in the Em-TAVR group than that in the El-TAVR group (log-rank; p<0.001). However, Em-TAVR did not predict mortality in the multivariate Cox regression analysis. Conclusions Em-TAVR was performed in 5.4% of patients. Higher CFS, PAD, hypoalbuminaemia, reduced LVEF and preprocedural MR predicted the need for Em-TAVR. Em-TAVR was not a predictor for mortality in the multivariate analysis, suggesting that it is a reasonable treatment option.

18 March 2021 in Open Heart
Verified
Journal Article
Open access
PDF file
MMMasaki Miyasaka
Masaki Miyasaka
NTNorio Tada
Norio Tada
MTMasataka Taguri
Masataka Taguri
SKShigeaki Kato
Shigeaki Kato
YEYusuke Enta
Yusuke Enta
KHKentaro Hayashida
Kentaro Hayashida
Background: The balloon-expandable SAPIEN 3 (S3) is superior to the older-generation balloon-expandable SAPIEN XT (XT) in a lower incidence of paravalvular aortic regurgitation, lower complication rates and better survival in transcatheter aortic valve implantation (TAVI). However, prosthesis–patient mismatch (PPM) more frequently occurs in S3 than XT. Further, little information is available on PPM after TAVI using S3 in Asians. This study aims to determine the incidence and predictors of PPM in S3 by focusing on the difference between S3 and XT using data from a Japanese multicentre registry. Methods: From the Optimised transCathEter vAlvular iNtervention-TAVI (OCEAN-TAVI) registry, 2134 patients undergoing TAVI using S3 or XT were included. PPM was defined as moderate if ≧0.65 but ≦0.85 cm2/m2 or severe if <0.65 cm2/m2 at the indexed effective orifice area by postprocedural echocardiography. Results: The incidence of moderate and severe PPM in S3 was 13.3% and 1.3%, respectively. The 20 mm transcatheter heart valve (THV) was more frequently used in S3 than XT (7.4% vs 2.4%, p<0.0001). PPM was more frequently observed in S3 than XT (14.7% vs 8.8%, p<0.0001). Multivariate logistic regression analysis revealed S3 predicted PPM (OR 1.92 (95% CI 1.35 to 2.74), p=0.0003). The mutual predictors for PPM between S3 and XT were younger age, larger body surface area, smaller aortic valve area, no balloon postdilatation and the use of 20 mm and 23 mm THV. When comparing 23 mm, 26 mm and 29 mm S3, the ORs of 20 mm S3 were 5.67 (95% CI 2.88 to 11.12), 19.24 (95% CI 8.13 to 46.86) and 51.03 (95% CI 12.28 to 280.77), respectively. Conclusions: The incidence of PPM after TAVI using S3 was 14.6% overall in this Asian population. PPM was more frequently observed in S3 than XT. A considerable number of patients were treated by the 20 mm S3 in an Asian cohort. The 20 mm THV was identified as a strong predictor for PPM.

16 June 2022 in Cardiovascular Intervention and Therapeutics
Verified
Journal Article
Closed access
PDF file
MMMasaki Miyasaka
Masaki Miyasaka
NTNorio Tada
Norio Tada
OFOn Behalf Of The Ocean-Shd Family
On Behalf Of The Ocean-Shd Family

1 February 2020 in Journal of Invasive Cardiology
Verified
Journal Article
Closed access
MMMasaki Miyasaka
Masaki Miyasaka
RSRahul Sharma
Rahul Sharma
YMYoshio Maeno
Yoshio Maeno
MTMasataka Tajuri
Masataka Tajuri
SYSung-Han Yoon
Sung-Han Yoon
RMRaj Makkar
Raj Makkar
The objective of this study was to determine whether anatomical features of the aortic valve and aorta visualized by CT are predictive parameters of stroke. from Journal of Invasive Cardiology.

10 September 2015 in Catheterization and Cardiovascular Interventions
Verified
Journal Article
Closed access
PDF file
MMMasaki Miyasaka
Masaki Miyasaka
NTNorio Tada
Norio Tada
SKShigeaki Kato
Shigeaki Kato
MKMasahiro Kami
Masahiro Kami
KHKazunori Horie
Kazunori Horie
NINaoto Inoue
Naoto Inoue