Persistent Unexplained Dyspnea: A Case of Hepatopulmonary Syndrome

Figure 4

(a) Microbubble transthoracic echocardiography showing a right to left shunt with a delayed opacification (>3 cardiac cycles) of the left atrium and ventricle; (b) macroaggregated albumin lung perfusion scan (MAA scan) showing radioactivity in the lungs (panel 2) as well as in the cerebrum (panel 1) and in the kidneys (panel 3), suggesting right to left shunt.

(a)

(b)