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Evaluation of advancing the standard valve dysfunction by multidetector-row CT

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  • Artificial Valve
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Abstract

We evaluated the diagnostic usefulness of electrocardiographically gated multidetector-row computed tomography (MDCT) for prosthetic valve dysfunction (PVD) of an ATS valve. Twenty-four patients underwent MDCT following echocardiography and cineradiography. Echocardiography and cineradiography showed normal valve function in 17 patients and PVD in 7. PVD included aortic prosthetic valve obstruction in 4 patients, an aortic annular aneurysm with paraprosthetic regurgitation in one, and a blocked leaflet in the mitral position in 2. Among the 7 patients, 5 received reoperation after MDCT. MDCT revealed a subprosthetic mass in all 5 patients with PVD and in 4 patients with normal valve function in the aortic position. In addition to a subprosthetic mass, an annular aneurysm was found in one. Valvular masses were detected in 2 patients with mitral PVD. At reoperation, subprosthetic pannus in the aortic position was detected in 2 patients, subprosthetic pannus and annular aneurysm with paraprosthetic leaks in one, and mitral valve thrombosis in 2. These findings confirmed at reoperation matched to the findings observed on MDCT. The mean CT attenuation of the subprosthetic mass in 6 patients was 152 ± 12 HU and that of the subprosthetic pannus in 3 patients was 163 ± 17 HU. CT attenuation of the thrombus in the mitral valve in the 2 patients was 60 and 99 HU. Our study demonstrates that MDCT is a valuable and reliable diagnostic technique for PVD in an ATS valve and that MDCT may identify an abnormality causing PVD.

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The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Cardiovascular Surgery, Chikamori Hospital Heart Center, 1-1-16 Ohkawasuji, Kochi, 780-8522, Japan

    Hideki Teshima

  2. Department of Cardiovascular Surgery, Cardiovascular Center, St. Mary’s Hospital, 422 Tsubukuhon-machi, Kurume, 830-8543, Japan

    Shigeaki Aoyagi

  3. Department of Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan

    Tomohiro Ueda, Kazuyoshi Takagi, Takahiro Shojima & Hiroyuki Tanaka

Authors
  1. Hideki Teshima
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  2. Shigeaki Aoyagi
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  3. Tomohiro Ueda
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  4. Kazuyoshi Takagi
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  5. Takahiro Shojima
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  6. Hiroyuki Tanaka
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Correspondence to Hideki Teshima or Shigeaki Aoyagi.

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Teshima, H., Aoyagi, S., Ueda, T. et al. Evaluation of advancing the standard valve dysfunction by multidetector-row CT. J Artif Organs 17, 162–168 (2014). https://doi.org/10.1007/s10047-013-0751-z

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  • DOI: https://doi.org/10.1007/s10047-013-0751-z

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