A Case of Drastic Improvement of Left Ventricular Outflow Tract Pressure Gradient during Follow-up in Dog

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  • 経過観察中に左室流出路圧較差の劇的な改善を認めたイヌの一例
  • 症例報告 経過観察中に左室流出路圧較差の劇的な改善を認めたイヌの一例
  • ショウレイ ホウコク ケイカ カンサツ チュウ ニ サシツ リュウシュツロアツ カクサ ノ ゲキテキ ナ カイゼン オ ミトメタ イヌ ノ イチレイ

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A two-year-old spayed female toy poodle weighing 3.7 kg was presented with cardiac murmur. A grade IV/VI systolic murmur was auscultated, loudest at the left and right cardiac base. Echocardiography showed severe left ventricular outflow tract obstruction and increased pressure gradient (127 mmHg). On the basis of these findings, the dog was presumptive diagnosed with severe subaortic stenosis or dynamic left ventricular outflow tract obstruction, and Carvedilol was prescribed. Two months after medical management was started, pressure gradient was improved drastically (8.8 mmHg), and cardiac murmur was disappeared. This case was considered that one of the dynamic left ventricular outflow tract obstruction that could be diagnosed during follow-up.

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