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Long-term results of one-and-a-half ventricle repair with open azygos vein

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Abstract

Background

The one-and-a-half ventricle repair (1.5VR) is an option for definitive surgery of cardiac defects with hypoplastic right ventricle (RV). The 1.5VR with open azygos vein was reported to provide a theoretical advantage of decompressing the supra vena cava (SVC) or the right atrium in patients with SVC hypertension or severe RV dysfunction. The aim of this study is to review and evaluate our experience with this procedure in the long-term period.

Methods

Medical records of the patient undergoing 1.5VR with open azygos vein between January 2000 and December 2019 were reviewed retrospective. Pre- and postoperative echocardiography and cardiac catheterization data were also analyzed.

Results

4 patients underwent the 1.5VR with open azygos vein. The median age at time of surgery was 2.2 years, and the median weight was 9.8 kg. The median tricuspid valve (TV) Z-score was  – 3.5, the median right ventricular end-diastolic volume (RVEDV) was 54.0% of normal. There were no operative death and early adverse events. Median follow-up time was 17.1 years. There were no late death and re-operation during the follow-up. The postoperative TV diameter and RVEDV were larger than preoperative data in 3 of 4 patients.

Conclusions

The 1.5VR with open azygos vein is a good surgical option for congenital heart disease with hypoplastic RV. The TV and RVEDV may grow and biventricular conversion may be possible.

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Authors and Affiliations

  1. Department of Cardiovascular Surgery, Chiba Children’s Hospital, 579-1 Heta, Midori, Chiba-City, 266-0007, Japan

    Takahiro Ito, Mitsuru Aoki, Ikuo Hagino & Hiroshi Koshiyama

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  1. Takahiro Ito
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  2. Mitsuru Aoki
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  3. Ikuo Hagino
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  4. Hiroshi Koshiyama
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Correspondence to Mitsuru Aoki.

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Ito, T., Aoki, M., Hagino, I. et al. Long-term results of one-and-a-half ventricle repair with open azygos vein. Gen Thorac Cardiovasc Surg 71, 391–395 (2023). https://doi.org/10.1007/s11748-022-01897-1

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  • DOI: https://doi.org/10.1007/s11748-022-01897-1

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