The way to control the interventricular septum thickness during septal myectomy. An experimental study

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Abstract

Background: At present, there are no methods for intraoperative monitoring of the interventricular septum (IVS) thickness in a stopped and empty heart. This might be an obvious reason for unsatisfactory results after a number of septal myectomies.

Aim: To provide an experimental background for the method to control the IVS thickness (that we had proposed) during septal myectomy.

Materials and methods: The proposed technique is based on the transillumination method. The experimental models were cadaveric porcine hearts, as well as fragments of the human myocardium removed during septal myectomies. The thickness of the translucent myocardium was estimated depending on the local illumination value at the entrance to the myocardium and the external illumination of the surgical field. We compared the results of 67 septal myectomies performed in the clinic of the Almazov National Medical Research Centre with the results of 35 similar experimental procedures with cadaveric porcine hearts using the proposed way of measurement.

Results: A graph of the illumination at the entrance to the myocardium against the thickness of the translucent myocardium was constructed. After conventionally performed septal myectomies the median variation of the myocardial thickness was 4 [3; 6] mm. In the experiment using the proposed control method, the median variation was 1 [1; 2] mm, i.e. significantly less than with the conventional approach (p = 3 x 10-10).

Conclusion: The method to control the IVS thickness when performing septal myectomy makes it possible to achieve the required myocardial thickness the resection area with much greater accuracy than with the conventional one.

About the authors

A. V. Gurshchenkov

Almazov National Medical Research Centre

Author for correspondence.
Email: glebenmerz@mail.ru
ORCID iD: 0000-0001-8494-0646

Aleksandr V. Gurshchenkov - MD, PhD, Assistant, Chair of Surgical Diseases’.

55-3 Mikrorayon 2, poselok im. Sverdlova, Vsevolozhskiy rayon, Leningradskaya oblast', 188683, Tel.: +7 (921) 799 36 34.

Россия

M. V. Selivanov

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0002-5210-6398

Maksim V. Selivanov - MD, Cardiac Surgeon’.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

E. A. Mukhin

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0002-1041-531X

Evgeniy A. Mukhin - Engineer’.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

I. V. Sukhova

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0002-7313-5307

Irina V. Sukhova - MD, PhD, Cardiologist, Leading Research Fellow.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

Ya. A. D'yachenko

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0003-2777-8739

Yakov A. D'yachenko - MD, Cardiac Surgeon, Postgraduate Student.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

R. S. Agaev

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0001-9258-9649

Ramil S. Agaev - MD, Cardiac Surgeon, Postgraduate Student.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

A. D. Maystrenko

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0003-0335-4712

Aleksey D. Maystrenko - MD, PhD, Cardiac Surgeon.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

V. K. Novikov

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0002-4311-3086

Vladimir K. Novikov - MD, PhD, Professor, Chair of Surgical Diseases.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

V. S. Kucherenko

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0001-5493-5205

Vladimir S. Kucherenko - MD, PhD, Professor, Chair of Surgical Diseases.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

M. L. Gordeev

Almazov National Medical Research Centre

Email: fake@neicon.ru
ORCID iD: 0000-0001-5362-3226

Mikhail L. Gordeev - MD, PhD, Professor, Head of the Chair of Surgical Diseases.

2 Akkuratova ul., Saint Petersburg, 197341

Россия

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Copyright (c) 2019 Gurshchenkov A.V., Selivanov M.V., Mukhin E.A., Sukhova I.V., D'yachenko Y.A., Agaev R.S., Maystrenko A.D., Novikov V.K., Kucherenko V.S., Gordeev M.L.

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