Long-Term Functional Results of Patients Operated for Isolated Discrete Subaortic Stenosis

Authors

  • Veysel Şahin, MD Department of Cardiovascular Surgery, Sıtkı Kocman Unıversity Training and Research Hospital, Mugla
  • Savas Demirpence, MD Department of Pediatric Cardiology, Cigli Training and Research Hospital, Izmir
  • Funda Tetik, MD Department of Cardiovascular Surgery, Sıtkı Kocman Unıversity Training and Research Hospital, Mugla
  • Faik Fevzi Okur, MD Department of Cardiovascular Surgery, Private Gazi Hospital, Izmir
  • Emin Alp Alayunt, MD Department of Cardiovascular Surgery, Private Gazi Hospital, Izmir

DOI:

https://doi.org/10.1532/hsf.3821

Keywords:

discrete subaortic stenosis, subaortic membrane resection, myectomy, long-term results, 2D speckle-tracking echocardiography

Abstract

Background: This study aimed to examine the long-term functional results of patients with isolated discrete subaortic stenosis who underwent subaortic membrane resection and myectomy, using transthoracic M-mode echocardiography and 2D speckle-tracking echocardiography.

Methods: Twenty patients operated for isolated discrete subaortic stenosis and 31 controls were included in the study. Patients underwent subaortic membrane resection and myectomy. During the long-term follow up, patients were evaluated with transthoracic M-mode echocardiography and 2D speckle-tracking echocardiography for functional assessment.

Results: The mean age at operation and mean duration of follow up was 8.1±5.6 years and 7.2±3.3 years, respectively. Interventricular septal thickness at diastole (0.9±0.1 vs. 0.8±0.1 cm, P = 0.001), ejection time (285.7±26.2 vs. 261.2±24.3 msec, P = 0.001), and aortic strain (15.6±3.7 vs. 10.5±4.0, P < 0.001) were significantly higher in patients. On the other hand, ejection fraction (64.9±6.1 vs. 75.1±5.4 %, P < 0.001), fractional shortening (35.0±5.1 vs. 43.7±5.1, P < 0.001), and corrected velocity circumferential fiber shortening (0.12±0.02 vs. 0.17±0.03, P < 0.001) were significantly lower, when compared with the controls. Longitudinal strain value significantly differed among the groups, with patients having significantly lower strain (18.8±1.8 vs. 20.1±2.1, P = 0.021).

Conclusion: In patients operated for isolated discrete subaortic stenosis, aortic gradient seems to continue in the long-term, with the persistence of low longitudinal strain.

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Published

2021-06-11

How to Cite

ŞAHİN, V., Demirpence, S., Tetik, F. ., Okur, F. F., & Alayunt, E. A. (2021). Long-Term Functional Results of Patients Operated for Isolated Discrete Subaortic Stenosis. The Heart Surgery Forum, 24(3), E512-E516. https://doi.org/10.1532/hsf.3821

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Articles