fig62
![Echocardiography: an overview - Part II](https://image.oaes.cc/2812ecbd-2d42-493c-8bf9-fab687757096/4657.fig.62.jpg)
Figure 62. Bar graph illustrating a decrease (P < 0.001) in the left atrial (LA) dimension (A) and LA to aorta (LA/Ao) ratio (B) following closure patent ductus arteriosus (PDA). Values prior to (Pre), on the day after (Post) occlusion of PDA and at follow-up (FU) were shown. Note statistically significant reduction (P < 0.01) of LA size and LA:Ao ratio on the day following the procedure; these values remain unchanged (P > 0.1) at follow-up. Reproduced from Ref.[40].