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Standard transthoracic echocardiography revealed dilated coronary sinus, raising suspicion of a persistent left cranial vena cava, and the persistency of this anomaly was confirmed by agitated\u2010saline study. Right ventricular echocardiographic parameters did not change significantly, while conventional parameters and global longitudinal strain analysis revealed left ventricular systolic dysfunction. Moreover, post\u2010systolic shortening and early systolic lengthening were detected by two\u2010dimensional speckle tracking echocardiography. This report shows that post\u2010systolic shortening and early systolic lengthening may be useful diagnostic markers indicating regional left ventricular systolic dysfunction. Further studies are needed to elucidate whether persistent left cranial vena cava contributes to left ventricular systolic dysfunction or is an accidental benign finding in dogs.<\/jats:p>","DOI":"10.1111\/jsap.13765","type":"journal-article","created":{"date-parts":[[2024,8,7]],"date-time":"2024-08-07T02:11:02Z","timestamp":1722996662000},"page":"830-837","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Persistent left cranial vena cava in a dog"],"prefix":"10.1111","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9836-0749","authenticated-orcid":false,"given":"Z.","family":"Yilmaz","sequence":"first","affiliation":[{"name":"Department of Internal Medicine, Veterinary Faculty Bursa Uludag University  Bursa 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