Cardiology "X ray" veterinary

causes for generalized enlargement of the cardiac shadow

• dilated cardiomyophaty

• patent ductus arteriosus

• mass lession involving the left heart

• heartworm disease

• pericardial effusion

Answer explanation

Generalized enlargement of the heart silhouette

or plain radiographs may indicate true

cardiomegaly or fluid within the pericardial sac

causes for generalized enlargement left atrial and ventricular

• dilated cardiomyophaty

• patent ductus arteriosus

• mass lession involving the left heart

• heartworm disease

• pericardial effusion

causes for right atrio and ventricular enlargement

• dilated cardiomyophaty

• patent ductus arteriosus

• mass lession involving the left heart

• heartworm disease

• tetralogy of fallot

Answer explanation

is the VHS considered normal for most breeds

• 8.5-10.5

• 8.0-10.0

• 8.5-10.0

• 8.0-10.5

• 8.5-9.5

The cardiac long axis (L) is measured from the ventral

border of the left ________ to the most

ventral aspect of the _____

• mainstem bronchus & cardiac apex

• cardiac apex & mainstem bronchus

• central third of the heart & maximum cardiac width

Answer explanation

The cardiac short axis (S) is measured from the ventral

border of the left ________ to the most

ventral aspect of the _____

• mainstem bronchus & cardiac apex

• cardiac apex & mainstem bronchus

• central third of the heart & maximum cardiac width

Answer explanation

the mainstem bronchi are pushed laterally and curve slightly around a markedly enlarged

• bowed-legged cowboy sign

• valentine shaped silhouette

• pulmonary undercirculation

• overcirculation pattern

• Silohouette sign

Answer explanation

In case of left atrial enlargement which commonly results in cough in canine patients, the caudal margin of the cardiac silhouette is straight, there is loss of the caudal cardiac waist, the trachea is displaced dorsally, and on the VD or DV view there is widening of the tracheal bifurcation (“bow legged cowboy sign”).

alveolar patterns obscure the tissue margins of adjacent structures causing

• bowed-legged cowboy sign

• valentine shaped silhouette

• pulmonary undercirculation

• overcirculation pattern

• Silohouette sign

Answer explanation

. Silhouette effect: "border effacement", or loss of border visualization between heart and opacified lung lobe, or diaphragm and lung lobe. Occurs when the two fluid opacity structures are in close anatomic contact.

occurs when the lungs are hyperfused

• bowed-legged cowboy sign

• valentine shaped silhouette

• pulmonary undercirculation

• overcirculation pattern

• Silohouette sign

Tags

NGSS.HS-LS1-3

characterized by narrowed pulmonary arteries and veins

• bowed-legged cowboy sign

• valentine shaped silhouette

• pulmonary undercirculation

• overcirculation pattern

• Silohouette sign