AU-cardiac

Pericardial effusion – S4CH view

Video clips showing examples of pericardial effusion obtained in the subcostal 4-chamber view

Notice:

– S4CH views
– Pericardial fluid collection (white arrows)

Compression of the right sided cavities in diastole is not obvious in these clips

Dilated, poorly functioning RV – PLAX view

Video clips of the parasternal long axis view

Notice
– Enlarged RV (arrows)
– RV size >2/3 of LV size except in D where there is a concomitant dilated and dysfunctioning LV

Right ventricle enlargement and myocardial dysfunction is seen in right side myocardial infarction and pressure increase (pulmonary embolus and chronic pulmonary hypertension)

Often a tricuspidal regurgitation is seen on colour Doppler and continuous wave Doppler will disclose a RV pressure increase (Advanced FATE level)

Pericardial effusion – PLAX view

Video clips showing examples of pericardial effusion obtained in the parasternal long axis view

Notice:

– PLAX views
– Pericardial fluid collection (arrows)

Compression of the right-sided cavities in diastole is not obvious in these

Cardiac tamponade

Cardiac tamponade is a clinical condition where the pericardial effusion compromises the cardiac function; it may become fatal

Every physician should be able to recognise the clinical characteristics and signs of cardiac tamponade:

– Cardiac tamponade is a CLINICAL diagnosis
– Cardiac tamponade is NOT an echocardiographic diagnosis
– Pericardial effusion can often be seen with ultrasound, but the sonographic size is not
important
– The clinical presentation is of paramount importance

If therapeutic evacuation of the pericardial effusion (pericardiocentesis) stabilises the haemodynamics of the patient, the diagnosis

Pericardial effusion (cardiac tamponade) – characteristics

In cases with pericardial effusion different echocardiographic and clinical characteristics are observed

2D echocardiographic characteristics:

– Pericardial fluid collection
– Compression of the right-sided cavities in diastole (often not present)

Clinical characteristics:

– 5 mm wide pericardial fluid collection is within normal range
– Badly tolerated in LV hypertrophy
– Badly tolerated in postoperative cardiac surgery
– Badly tolerated in rapidly developing PE

Pericardial effusion – PSAX view

Video clips showing examples of pericardial effusion obtained in the parasternal short axis view

Notice:

– PSAX views
– Pericardial fluid collection (white arrows)

Compression of the right-sided cavities in diastole is not obvious in these clips

Hypertrophic LV – AP4CH view

Apical 4 chamber view showing a hypertrophic left ventricle

Notice:

– Myocardial wall thickness is increased
– LV dimensions are often decreased
– Left atrium is often enlarged
– LV function is variable

Image C shows severe reduced LV dysfunction

The arrows in image D point to concomitant pericardial effusion