open access

Vol 24, No 2 (2017)
Original articles — Clinical cardiology
Published online: 2016-09-30
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Assessment of cardiovascular function following transcatheter aortic valve implantation based on six-minute walk test

Piotr Chodór, Krzysztof Wilczek, Teresa Zielińska, Roman Przybylski, Jan Głowacki, Łukasz Włoch, Marian Zembala, Zbigniew Kalarus
DOI: 10.5603/CJ.a2016.0086
·
Pubmed: 27714724
·
Cardiol J 2017;24(2):167-175.

open access

Vol 24, No 2 (2017)
Original articles — Clinical cardiology
Published online: 2016-09-30

Abstract

Background: Transcatheter aortic valve implantation (TAVI) is presently a recognized treatment mo­dality for patients with severe aortic stenosis ineligible for surgery. It reduces mortality as compared to the conservative treatment. It is further expected from this therapy to improve quality of life by improving of the cardiovascular function performance. The aim of this study is to compare patients’ cardiovascular system efficiency in the 6-minute walk test (6MWT) made before and after TAVI and at the 6–12-month follow-up.

Methods: From January 2009 until February 2012, in the Silesian Center for Heart Diseases in Zabrze, TAVI was performed in 104 patients. Eighty-two patients who underwent 6MWT before surgery were qualified for the analysis. The average age of the patients was 76.0 ± 9.17 years, women made 45.1%. The risk of surgical treatment according to the Logistic Euroscore averaged 22.76 ± 12.63%, and by the Society of Thoracic Surgeons — 5.55 ± 3.34%. The 6MWT was performed within 1 month before the TAVI procedure, up to a month after the procedure and during the 6–12-month follow-up.

Results: The 6-minute walk test after TAVI was performed by 64 patients, and after 6–12 month follow-up by 46 patients. The average distance in 6MWT increased from 268.4 ± 89.0 m before treat­ment to 290.0 ± 98.2 m after the procedure (p = 0.008) and 276.1 ± 93.5 m to 343.1 ± 96.7 m after 6–12 months (p < 0.0001).

Conclusions: Transcatheter aortic valve implantation procedures significantly improve function of the cardiovascular system evaluated by the 6MWT in 1- and 6–12-month observations. (Cardiol J 2017; 24, 2: 167–175)

Abstract

Background: Transcatheter aortic valve implantation (TAVI) is presently a recognized treatment mo­dality for patients with severe aortic stenosis ineligible for surgery. It reduces mortality as compared to the conservative treatment. It is further expected from this therapy to improve quality of life by improving of the cardiovascular function performance. The aim of this study is to compare patients’ cardiovascular system efficiency in the 6-minute walk test (6MWT) made before and after TAVI and at the 6–12-month follow-up.

Methods: From January 2009 until February 2012, in the Silesian Center for Heart Diseases in Zabrze, TAVI was performed in 104 patients. Eighty-two patients who underwent 6MWT before surgery were qualified for the analysis. The average age of the patients was 76.0 ± 9.17 years, women made 45.1%. The risk of surgical treatment according to the Logistic Euroscore averaged 22.76 ± 12.63%, and by the Society of Thoracic Surgeons — 5.55 ± 3.34%. The 6MWT was performed within 1 month before the TAVI procedure, up to a month after the procedure and during the 6–12-month follow-up.

Results: The 6-minute walk test after TAVI was performed by 64 patients, and after 6–12 month follow-up by 46 patients. The average distance in 6MWT increased from 268.4 ± 89.0 m before treat­ment to 290.0 ± 98.2 m after the procedure (p = 0.008) and 276.1 ± 93.5 m to 343.1 ± 96.7 m after 6–12 months (p < 0.0001).

Conclusions: Transcatheter aortic valve implantation procedures significantly improve function of the cardiovascular system evaluated by the 6MWT in 1- and 6–12-month observations. (Cardiol J 2017; 24, 2: 167–175)

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Keywords

aortic stenosis, transcatheter aortic valve implantation, 6-minute walk test

About this article
Title

Assessment of cardiovascular function following transcatheter aortic valve implantation based on six-minute walk test

Journal

Cardiology Journal

Issue

Vol 24, No 2 (2017)

Pages

167-175

Published online

2016-09-30

DOI

10.5603/CJ.a2016.0086

Pubmed

27714724

Bibliographic record

Cardiol J 2017;24(2):167-175.

Keywords

aortic stenosis
transcatheter aortic valve implantation
6-minute walk test

Authors

Piotr Chodór
Krzysztof Wilczek
Teresa Zielińska
Roman Przybylski
Jan Głowacki
Łukasz Włoch
Marian Zembala
Zbigniew Kalarus

References (14)
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