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Fig. 17. Large pericardial effusion with "mechanical alternans." These apical four-chamber views demonstrate the swinging motion (curved arrows) of the heart within a large pericardial effusion (PE). This "mechanical alternans" corresponds to electrical alternans on the electrocardiogram.

Segment Model Heart Apical Chamber

Fig. 17. Large pericardial effusion with "mechanical alternans." These apical four-chamber views demonstrate the swinging motion (curved arrows) of the heart within a large pericardial effusion (PE). This "mechanical alternans" corresponds to electrical alternans on the electrocardiogram.

Pediatric Echocardiography Views

thickened parietal pericardium with adhesions

Pediatric Echocardiography Views

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Anxiety and Panic Attacks

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