6,502
edits
Changes
→Radiography
In dogs, thoracic radiography provides good information on disease severity and is useful for screening dogs showing clinical signs compatible with ''D. immitis'' infection<sup>1</sup>. However, thoracic radiograph do not neccessarily reflect the current worm burden: radiographic signs of advanced disease can persist long after an infection has run its course<sup>4</sup>. Conversely, dogs with high burdens may be inactive and thus show few clinical signs or radiographic changes. Radiographic signs are mild-to-moderate in class II disease, but become more obvious in class III infections. The main pulmonary artery is enlarged,sup>1, 4</sup>, and the caudal lobar vessels appear tortuous<sup>1</sup> Ill-defined, fluffy infiltrates are apparent, and often surroung in the caudal lobar vessels. Right-sided cardiomegaly may be appreciated, and pleural and peritoneal effusions can be noted if right-sided congestive heart failure occurs<sup>4</sup>.
In dogs, thoracic radiography provides good information on disease severity and is useful for screening dogs showing clinical signs compatible with ''D. immitis'' infection<sup>1</sup>. However, thoracic radiograph do not neccessarily reflect the current worm burden: radiographic signs of advanced disease can persist long after an infection has run its course<sup>4</sup>. Conversely, dogs with high burdens may be inactive and thus show few clinical signs or radiographic changes. Radiographic signs are mild-to-moderate in class II disease, but become more obvious in class III infections. The main pulmonary artery is enlarged,sup>1, 4</sup>, and the caudal lobar vessels appear tortuous<sup>1</sup> Ill-defined, fluffy infiltrates are apparent, and often surroung in the caudal lobar vessels. Right-sided cardiomegaly may be appreciated, and pleural and peritoneal effusions can be noted if right-sided congestive heart failure occurs<sup>4</sup>.
Cardiac changes on thoracic radiography are less common in cats than dogs. The caudal lobar veins are enlarged (greater than 1.5 times the width of the ninth ribe), and the pulmonary arteries are blunted and tortuous<sup>3</sup>. Patchy parenchymal infiltrates may be seen in the region of vessels in animals showing respiratory signs<sup>1, 3</sup>. The main pulmonary artery cannot normally be seen in cats on radiography as it has a relatively midline position<sup>1</sup>. Thoracic radiography is an important
Cardiac changes on thoracic radiography are less common in cats than dogs. The caudal lobar veins are enlarged (greater than 1.5 times the width of the ninth ribe), and the pulmonary arteries are blunted and tortuous<sup>3, 5</sup>. Patchy parenchymal infiltrates may be seen in the region of vessels in animals showing respiratory signs<sup>1, 3</sup>. Enlargement of the main pulmonary artery cannot normally be seen in cats, as it is has a relatively midline position and is thus obscured by the cardiac silhouette<sup>1, 5</sup>. Right-sided cardiomegaly is not considered a typical finding in the cat<sup>5</sup>.
is not considered a typical
finding in cat.
===Echocardiography===
===Echocardiography===