Open Veterinary Journal

Peer-Reviewed Journal

Treatment of severe mitral regurgitation caused by lesions in both leaflets using multiple mitral valve plasty techniques in a small dog


Satoko Yokoyama(1,2), Isamu Kanemoto(1,*), Kippei Mihara(1), Takanori Ando(1,3), Koudai Kawase(1,4), Yasuaki Sahashi(1,5) and Kazuhito Iguchi(1,6)


Chayagasaka Animal Hospital, 1-1-5 Shinnishi, Chikusa, Nagoya, Aichi, 464-0003 Japan

Miyashita Animal Hospital, 5-8-29 Kegoya, Kure, Hiroshima, 737-0012 Japan

Heart-Will Animal Hospital, 1-2-14 Okidai, Tobata, Kita-Kyushu, Fukuoka, 804-0064 Japan

Sapporo Night Animal Hospital Emergency & Critical Care, 7-5-6 Minami-2 Zyou-nishi, Chuo, Sapporo, Hokkaido, 060-0062 Japan

Garcia Animal Hospital, 2-1-56 Tatumi, Koutou-ku, Tokyo, 135-0053 Japan

Momijiyama Douri Pet Clinic, 5-2-9 Nakano, Nakano-ku, Tokyo, 164-0001 Japan

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Abstract

Mitral valve plasty (MVP) is preferred over mitral valve replacement (MVR) for mitral regurgitation in humans because of its favorable effect on quality of life. In small dogs, it is difficult to repair multiple lesions in both leaflets using MVP. Herein, we report a case of severe mitral regurgitation caused by multiple severe lesions in the posterior leaflet (PL) in a mixed Chihuahua. Initially, we had planned MVR with an artificial valve. However, MVP combined with artificial chordal reconstruction of both leaflets, semicircular suture annuloplasty, and valvuloplasty using a newly devised direct scallop suture for the PL was attempted in this dog. The dog recovered well and showed no adverse cardiac signs, surviving two major operations. The dog died 4 years and 10 months after the MVP due to non-cardiovascular disease. Our additional technique of using a direct scallop suture seemed useful for PL repair involving multiple scallops in a small dog.

Keywords: Chordal reconstruction, Dog, Mitral regurgitation, Multiple direct scallop suture, Semi-circular suture annuloplasty.

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Cite this paper:

Yokoyama, S., Kanemoto, I., Mihara, K., Ando, T., Kawase, K., Sahashi, Y. and Iguchi, K. 2017. Treatment of severe mitral regurgitation caused by lesions in both leaflets using multiple mitral valve plasty techniques in a small dog. Open Vet. J. 7(4), 228-331.