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Table 4 Details about the foetal suboptimal scanning plane

From: Success rate to complete optimal 20 + 2 ISUOG planes for foetal ultrasonographic structural screening during early second trimester pregnancy in Thailand

Suboptimal planes GA < 20 weeks
(N = 126)
GA >  = 20 weeks
(N = 126)
Overall
(N = 256)
P value
Face (n, %) 13 (10.3) 9 (7.1) 22 (8.6) 0.240
 Coronal view if upper lip, nose and nostrils (n. %) 3 0 3  
 Both orbits,,both lens (n, %) 1 0 1  
 Median facial profile (n, %) 9 9 9  
Thorax (n, %) 4 (3.2) 4 (3.2) 8 (3.1) 0.086
 Lung, 4CB (n, %) 0 0 0  
 LVOT (n, %) 0 0 0  
RVOT and crossover of LVOT (n, %) 1 0 1  
3VT (n, %) 1 0 1  
RVOT and crossover of LVOT and 3VT (n, %) 0 1 1  
LVOT, RVOT and crossover of LVOT and 3VT (n, %) 2 0 2  
Lungs, 4CB, LVOT, RVOT and crossover of LVOT and 3VT (n, %) 0 3 3  
Face and thorax (n, %) 11 (8.7) 1 (0.8) 12 (4.7)  
Face and abdomen (n, %) 1 (0.8) 0 (0) 1 (0.4)  
  1. 4CB 4 chamber view of heart, LVOT Left ventricular outflow tract, RVOT Right ventricular outflow tract, 3VT 3 vessel trachea view of heart
  2. *Fisher exact test