Modified B-ultrasound method for measurement of antral section only to assess gastric function and guide enteral nutrition in critically ill patients

Table 1 Comparison of the indices of gastric function measured using the modified and traditional B-ultrasound methods

Index	Modified method (n = 32)	Traditional method (n = 32)	t-value	P value
ACF	2.39 ± 0.24	3.22 ± 0.32	-10.580	0.000
ACA	0.36 ± 0.04	0.69 ± 0.11	-14.376	0.000
MI	3.34 ± 0.25	4.37 ± 0.34	-12.445	0.000
GET	32.65 ± 4.46	60.44 ± 4.98	-21.196	0.000

ACF: Antral contraction frequency; ACA: Antral contraction amplitude; MI: Motility index; GET: Gastric emptying time.

Table 2 Correlation analysis of indices measured using the modified and traditional methods

Index	Correlation coefficient	P value	95%CI
ACF	0.613	0.003	0.21-0.74
ACA	0.324	0.080	-0.06-0.63
MI	0.536	0.005	0.19-0.76
GET	0.572	0.004	0.21-0.77

ACF: Antral contraction frequency; ACA: Antral contraction amplitude; MI: Motility index; GET: Gastric emptying time.

Table 3 Comparison of the implementation of enteral nutrition in the two groups of patients

	ICU time (d)	Hospitalization time (d)	Enteral nutrition time (h)	Average daily calorie value (kcal/kg)
Modified B-ultrasound method (n = 26)	4.42 ± 1.92	13.35 ± 2.92	30.38 ± 9.42	28.73 ± 4.35
Gastric juice withdrawal method (n = 26)	5.31 ± 2.11	16.58 ± 5.95	36.63 ± 10.26	25.69 ± 3.74
t-value	-1.620	-2.482	-2.123	2.702
P value	0.111	0.016	0.039	0.009