Synchronous electrogastrographic and manometric study of the stomach as an esophageal substitute

Table 1 Comparison of fasting and postprandial electrogastrographic variables in healthy control (HC) volunteers and esophagectomized patients with the stomach as a substitute.

		HC (n = 18)	Operated (n = 21)	P (HC vs Operated)
Normogastria (%)	preprandial	79.1±10.5	45.3±20.5	P<0.001
	postprandial	81.8±9.8	42.4±23.3	P<0.001
	P (pre- vs postprandial)	NS	NS
Bradygastria (%)	preprandial	10.55.7	31.1±14.4	P<0.001
	postprandial	9.7±6.2	33.2±14.5	P<0.001
	P (pre- vs postprandial)	NS	NS
Tachygastria (%)	preprandial	8.4±5.7	18.5±11.4	P<0.05
	postprandial	6.8±4.9	20.8±12.1	P<0.001
	P (pre- vs postprandial)	NS	NS
DF (cpm)	preprandial	2.81±0.62	3.06±1.80	NS
	postprandial	3.04±0.46	3.51±2.00	NS
	P (pre- vs postprandial)	P<0.02	NS
DFIC (%)	preprandial	31.2±12.8	53.6±25.9	P<0.001
	postprandial	32.3±14.9	55.0±27.9	P<0.001
	P (pre- vs postprandial)	NS	NS
DP (mV2)	preprandial	927±447	529±450	P<0.01
	postprandial	1 399±727	603±578	P<0.001
	P (pre- vs postprandial)	P<0.005	NS
DPIC (%)	preprandial	80.1±30.0	82.2±36.9	NS
	postprandial	88.3±30.2	83.5±32.4	NS
	P (pre- vs postprandial)	NS	NS
Power ratio		1.75±1.2	1.09±0.18	P<0.02

Table 2 Fasting and postprandial motility indices in healthy volunteers and in esophagectomized patients with the stomach as a substitute.

	Operated (n = 21)		Significance Symptomatic vs Asymptomatic	Healthy controls (n = 18)	Significance Operated vs control
	Symptomatic	Symptom free
Preprandial	1.39±0.51	2.38±0.82	P<0.01	3.03±0.79	P<0.001
Postprandial	1.28±0.81	2.44±1.05	P<0.006	7.39±1.90	P<0.001
Significance	NS	NS		P<0.001

Table 3 The response to a test meal of mechanical activity in the stomach of healthy volunteers and of esophagectomized patients with a transposed stomach, expressed as the number of contractions per minute. The electromechanical fractions express the percentage of the dominant frequency that develops mechanical contractions.

	Operated patients (n = 21)						Healthy controls (n = 18)
	Preprandial			Postprandial			Preprandial	Postprandial
	Total	Symptomatic	Asymptomatic	Total	Symptomatic	Asymptomatic
Contractions	2.16±1.66	2.24±2.01	2.03±0.93	2.19±1.85	2.14±2.28	2.26±0.97	2.2±0.71	2.36±0.731
Electromechanical fraction	68.7±19.4	67.5±22.5	70.5±15.8	62.5±31.0	54.2±32.3	76.0±24.8	78.2±17.6	75.8±18.7

¹P<0.02.