Kazuaki Okuyama, MD

The Buddy Balloon for Transcatheter Aortic Valve Replacement: Insights From Computed Tomographic Assessment of the Aortic Valvular Complex

08/29/2013

Kazuaki Okuyama , MD;

Hasan Jilaihawi , MBChB, MD;

Raj R. Makkar , MD;

Considering the concept of crossing a bulky prosthesis through a calcified and narrowed aortic valve, it seems not unexpected that some of these procedures have difficulty. The buddy-balloon technique is an essential contingency plan maneuver...

Considering the concept of...

08/29/2013

Journal of Invasive Cardiology

EP Research

Comparison in Clinical Outcomes Between Leadless and Conventional Transvenous Pacemaker Following Transcatheter Aortic Valve Implantation

02/04/2021

Takumi Higuma , MD, PhD;

Mika Watanabe , MD;

Yoshihiro J. Akashi , MD, PhD;

Masashi Koga , MD;

Shingo Kuwata , MD, PhD;

Ryo Kamijima , MD, PhD;

Masaki Izumo , MD, PhD;

Makoto Takano , MD;

Tomoo Harada , MD, PhD;

Kazuaki Okuyama , MD;

Yasuhiro Tanabe , MD, PhD;

Kenichi Sasaki , MD;

Yuki Ishibashi , MD, PhD;

Toshiki Kaihara , MD, PhD;

Patients with leadless PM following TAVI may have shorter hospital stays, and clinical outcomes can be comparable with DDD-PMs.

Patients with leadless PM...

02/04/2021

EP Lab Digest

Comparison in Clinical Outcomes Between Leadless and Conventional Transvenous Pacemaker Following Transcatheter Aortic Valve Implantation

09/30/2020

Yasuhiro Tanabe , MD, PhD;

Yuki Ishibashi , MD, PhD;

Takumi Higuma , MD, PhD;

Yoshihiro J. Akashi , MD, PhD;

Kazuaki Okuyama , MD;

Shingo Kuwata , MD, PhD;

Kenichi Sasaki , MD;

Masaki Izumo , MD, PhD;

Toshiki Kaihara , MD, PhD;

Tomoo Harada , MD, PhD;

Mika Watanabe , MD;

Masashi Koga , MD;

Ryo Kamijima , MD, PhD;

Makoto Takano , MD;

Atrioventricular block is a common complication of transcatheter aortic valve implantation (TAVI). Although conventional transvenous dual-chamber pacemaker (PM) is ideal for atrioventricular block, leadless PM is less invasive and may be...

Atrioventricular block is a...

09/30/2020

Journal of Invasive Cardiology

Clinical Images

“Avulsion Injury” of the Artery by a Suture-Mediated Closure System During Transcatheter Aortic Valve Implantation

06/30/2020

Masaki Izumo , MD, PhD;

Kazuaki Okuyama , MD;

Toshiki Kaihara , MD, PhD;

Mika Watanabe , MD;

Masashi Koga , MD;

Ryo Kamijima , MD, PhD;

Yasuhiro Tanabe , MD, PhD;

Yuki Ishibashi , MD, PhD;

Takumi Higuma , MD, PhD;

Yoshihiro J. Akashi , MD, PhD;

Shingo Kuwata , MD, PhD;

We describe a cut-down method that is useful in cases with calcification restricted to the region surrounding the puncture site in transcatheter aortic valve implantation patients with severe aortic stenosis.

We describe a cut-down method...

06/30/2020

Journal of Invasive Cardiology

Original Contribution

Percutaneous Paravalvular Leak Closure for Balloon-Expandable Transcatheter Aortic Valve Replacement: A Comparison With Surgical Aortic Valve Replacement Paravalvular Leak Closure

05/29/2015

Kazuaki Okuyama , MD;

Mohammad Kashif , MD;

Hasan Jilaihawi , MBChB, MD;

Vikas Soni , MD;

Raj R. Makkar , MD;

Takashi Matsumoto , MD;

Wen-Loong Yeow , MD;

Mamoo Nakamura , MD;

Saibal Kar , MD;

Wen Cheng , MD;

Paravalvular leak is frequently observed after transcatheter aortic valve replacement (TAVR) and is related to increased mortality. Percutaneous PVL closure has been performed following surgical aortic valve replacement (SAVR); however, the...

Paravalvular leak is frequently...

05/29/2015

Journal of Invasive Cardiology