CARDIAC IMAGING Very useful.

2D Echo

• RV infarction: diagnosed by Echo
• Ventricular aneurysm
• Pericardial effusion y LV thrombus
• Wall motion abnormalities are seen
• Old scars can also cause WMA
• Decreased LV function is indication for ACE in­hibitor
• VSD
• MR is diagnosed easily.

CARDIAC IMAGING

dobutamine stress echocardiography:

• noninvasive test for coronary artery disease in which dobutamine is given to patients to increase the workload of the heart,
• and then the heart is evaluated with ultrasonic imaging

stress echocardiography:

• The ultrasonic identification of segments of heart muscle that do not move properly when a patient with coronary artery disease exercises

transthoracic echocardiography:

• heart and great vessels by means of an ultrasonic transducer placed on the chest wall.

transesophageal echocardiography:

• obtaining echocardiographic images in with the ultrasonographic transducer is introduced into the esophagus

Myocardial perfusion imaging:

• It is done with 201TI, 99mTc. Acute and chronic scars cannot be distinguished by this test. It is useful for diagnosis of viability of myocardium.

PROGNOSIS

• Death occurs within 24 hrs in a vast majority of cases due to :
• Arrhythmias like ventricular fibrillation
• Pump failure.