Figure 1.
a. The curved length of Nose-Ear (NE) was measured from the nostril (Arrow) to the lobule of auricle (Arrowhead) by tracing five more points along the face surface between the two ends. b. The linear Ear-Xiphoid (EX) length is measured from the ear lobe (Arrow) to the lower tip of xiphoid (Arrowhead).
Figure 2.
a. Pointed out the NG tube (Arrow) at the transverse level of the cardia. b. Every locations of NG tube are found on the transaxial images (5 mm thickness) with tracing upward till the nostril (Arrowhead). Curved multiplanar algorithm which represents the NG tube is reconstructed and measured.
Figure 3.
A common type of NG tube is 125 cm in length and with marks at 45, 55, 65 and 75 cm.
Four side-holes are located at the insertion end, and the distances to the catheter-tip are 95, 73, 51, and 28 mm respectively.
Table 1.
Descriptive statistics and comparison between the “No side-hole pass” and the opposite group.
Table 2.
Linear Regression Models on the NG length.
Figure 4.
Scatter plot shows the significant negative correlation between NEX length and additional length to secure side-hole placement.
Table 3.
Linear regression models on the additional length to secure side-hole placement.