From: The effectiveness of ultrasonography in verifying the placement of a nasogastric tube in patients with low consciousness at an emergency center
Evaluation method
Correct placement
Incorrect placement
K
p
Radiology
44*(93.6)
3 (6.4)
Ultrasound
39 (83.0)
8 (17.0)
0.299
0.018
Auscultation
46 (97.9)
1 (2.1)
0.484
<0.001
pH measuring†
32 (86.5)
5 (13.5)
0.444
0.005