The learning curve of minimally invasive aortic valve replacement for aortic valve stenosis

Masuda, Takahiko; Nakamura, Yoshitsugu; Ito, Yujiro; Kuroda, Miho; Nishijima, Shuhei; Okuzono, Yasuhito; Hirano, Takahisa; Hori, Takaki

doi:10.1007/s11748-019-01234-z

Cited by 17 publications

(16 citation statements)

References 9 publications

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“…Furthermore, due to its novelty, there is no doubt a significant learning curve, suggesting an initial longer CPB and CC time. Similar results are shown in minimally invasive AV surgery using a tissue or mechanical valve, suggesting that an average of 40–50 cases are required to achieve a stable CBP and CC time 17,18 …”

Section: Discussionsupporting

confidence: 58%

Understanding aortic valve repair through Ozaki procedure: A review of literature evidence

Chan

Basu

Scenza

et al. 2022

Journal of Cardiac Surgery

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Background Aortic valve neocuspidization (AV Neo) using glutaraldehyde‐treated autologous pericardium was first reported by Ozaki et al. in 2007. This technique has become an alternative to tissue and mechanical valve in selected patients as long‐term anticoagulation is not required and shows promising midterm results and durability. Method A comprehensive search was performed on the major database using the search terms “Ozaki technique” AND “Aortic Valve Neocuspidization” AND “AV Neocuspidization” AND “Autologous pericardium” AND “glutaraldehyde‐treated autologous pericardium.” Articles up to August 1st, 2021 were included in this study. Results A total of nine studies with a total of 1342 patients were included. The mean age was 67.36 and 54.23% were male. 66.32% and 23.92% of patients had aortic stenosis and aortic regurgitation, respectively. 66% of patients had a native tricuspid aortic valve (AV) and 31.37% of patients' native AV was bicuspid. Three studies reported their experience performing AV Neo via ministernotomy. Conclusion AV Neo can be a suitable alternative to surgical AV replacement in selected patients. The short‐ and midterm outcomes are comparable without the need for long‐term oral anticoagulation. Long‐term follow‐up data are required for this novel approach to be widely adopted.

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Section: Discussionsupporting

confidence: 58%

Understanding aortic valve repair through Ozaki procedure: A review of literature evidence

Chan

Basu

Scenza

et al. 2022

Journal of Cardiac Surgery

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“…In Japan, the incidence rate of stroke after MICS is reported as 1.0% 3 . At our institution, the incidence of symptomatic cerebral infarction after MICS was zero 4 .…”

Section: Introductionmentioning

confidence: 85%

Silent brain infarction after minimally invasive cardiac surgery with retrograde perfusion

Nishijima

Nakamura

Yoshiyama³

et al. 2020

Preprint

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Background and aim: The incidence of symptomatic cerebral infarction after minimally invasive cardiac surgery (MICS) with retrograde perfusion has been increasing. However, there is no report about silent brain infarction (SBI) after MICS with retrograde perfusion. Because SBI may cause delirium and decline of cognitive function, this condition is important clinically. Thus, the current study aimed to investigate the occurrence of SBI after MICS via magnetic resonance imaging (MRI). Methods: Between July 2014 and July 2018, 174 patients underwent MICS with retrograde perfusion and postoperative MRI in this study. Univariate and multivariate analyses were performed to examine the occurrence of SBI and to identify its risk factors. Results: Of 174 patients, 26 (14.9%) presented with SBI. The univariate analysis revealed that age and aortic valve stenosis (AS) are the risk factors of SBI. Meanwhile, multivariate analysis revealed AS as the only risk factor of SBI. Conclusions: At our institution, the incidence of SBI after MICS with retrograde perfusion was acceptable.

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“…Similar results are shown in minimally invasive aortic valve surgery using a tissue or mechanical valve, suggesting that average 40-50 cases are required to achieve a stable CBP and CC time. (17,18) To harvest the pericardium for the procedure, most surgeons would perform the procedure via a sternotomy, hence limiting its popularity. Lately, an upper mini-sternotomy incision with harvesting the pericardium via thoracoscopic technique has been reported but again, a significant learning curve may arise.…”

Section: Limitationsmentioning

confidence: 99%

Aortic Valve Neocuspidization using glutaraldehyde-treated autologous pericardium: A literature review

Chan

Basu

discenza

et al. 2020

Preprint

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Background: Aortic Valve Neocuspidization using glutaraldehyde-treated autologous pericardium was first performed by Ozaki et al. in 2007. This technique has become an alternative to tissue and mechanical valve as long-term anticoagulation is not required and shows promising midterm results and durability. Method: A comprehensive search was performed on the major database using search terms “Ozaki technique” AND “Aortic Valve Neocuspidization” AND “AV Neocuspidization” AND “Autologous pericardium” AND “glutaraldehyde-treated autologous pericardium”. Articles up to 1st of August 2020 were included in this study. Results: A total of 9 studies with a total of 1342 patients were included. The mean age was 67.36 and 54.23% were male. 66.32% and 23.92% of patients had aortic stenosis and aortic regurgitation, respectively. 66% of patients had a native tricuspid aortic valve and 31.37 % patients’ native aortic valve was bicuspid. Three studies reported their experience performing Aortic Valve Neocuspidization via mini sternotomy. Conclusion: Aortic Valve Neocuspidization is an alternative to biological and mechanical prostheses for surgical aortic valve replacement. The short and mid-term outcome are comparable without the need for long term oral anticoagulation. Long term follow-up data is required for this novel approach to be widely adopted.

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The learning curve of minimally invasive aortic valve replacement for aortic valve stenosis

Cited by 17 publications

References 9 publications

Understanding aortic valve repair through Ozaki procedure: A review of literature evidence

Understanding aortic valve repair through Ozaki procedure: A review of literature evidence

Silent brain infarction after minimally invasive cardiac surgery with retrograde perfusion

Aortic Valve Neocuspidization using glutaraldehyde-treated autologous pericardium: A literature review

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