A Clinical Study on Velocity Patterns of Pulmonary Venous Flow in Canine Heartworm Disease

Journal of Veterinary Medical Science

Mitsugi TAKAHASHI¹  Takeshi SHIBATA¹  Yoshito WAKAO¹ 

[1] Department of Veterinary Surgery, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 229-8501, Japan

关键词: canine;    canine heartworm disease;    pulmonary venous flow;    transesophageal echocardiography;    transthoracic echocardiography;   

DOI  :  10.1292/jvms.62.169

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(24)Cited-By(2)In this study, we evaluated methods of determining the velocity patterns of pulmonary venous flow (PVF) in dogs and then investigated the relationship of the patterns to cardiac functions in heartworm disease (HD) by transthoracic echocardiography (TTE). The results revealed that there was a good correlation between PVF patterns determined by transesophageal echocardiography (TEE) and TTE in animals lying on their left sides. The measurement of S and D wave velocities (PVS and PVD) by TTE was shown to allow clinical determination of the velocity patterns of PVF in dogs. The HD groups showed significant increases in PVS and PVD, and S and D wave time-velocity integrals (S-TVI and D-TVI) of the right cranial lobe PVF, when compared with the normal group, as determined by TTE (P<0.05). In contrast, the HD groups produced significant decreases in PVD and D-TVI of the right caudal lobe PVF compared with the normal group (P<0.05), and a significant increase in the ratio of S-TVI to (S-TVI + D-TVI) (P<0.05). It is, therefore, suggested that measurement of the velocity patterns of the right cranial and caudal lobe PVF could be one method of assessing the stages of obstructive lesions in the pulmonary artery.

【 授权许可】

Unknown