PMC5572614_01
Two-dimensional contrast echocardiography showed the presence of bubbles in the left atrium after 7 cardiac cycles (yellow arrow), consistent with an intrapulmonary shunting (R: right, L: left).
CRIPE2017-2171974.001.jpg
PMC5572614_01_CRIPE2017-2171974.001.jpg
fig1
A-a gradient of 36 mmHg (normal < 15). A two-dimensional bubble-contrast echocardiography revealed the presence of bubbles in the left atrium at seven cardiac cycles after the right atrium, which is consistent with pulmonary recirculation (Figure 1).