Table 1.

GMA and GI symptoms from SSc patients

Variables	Rhythms, % Symptoms, % Concentrations	Range
ch 2 Nl	73.1 ± 5.4	39–100
ch 2 Br	4.9 ± 1.1	0–18
ch 2 Ar	14.5 ± 3.5	0–43
ch 3 Nl	72.1 ± 5.3	40–100
ch 3 Br	5.3 ± 1.7	0–18
ch 3 Ar	16.8 ± 3.6	0–40
ch 4 Ar	13.0 ± 2.9	0–39
Coupl 1,2	71.2 ± 5.9	34–100
GIDQ
Oesophageal (5 items)		20–80
Heartburn	80
Gastric (5 items)
Bloating	90	20–90
Early satiety	50
Intestine (8 items)
Constipation	50	10–50
Diarrhoea	30
Anorectal (5 items)
Incomplete BM	60	20–60
Plasma VIP (ng mL−1)	22.4 ± 0.8	15–29
Plasma motilin (pg mL−1)	25.0 ± 3.6	13–62

Data presented are percentages of rhythm, symptoms or concentrations (mean + SEM) and the range of percentages for that variable among the fasting SSc, systemic sclerosis, patients. GMA, gastric myoelectrical activity is shown for channels 2 and 3, slow wave and dysrhythmias of bradygastria and arrhythmia and channel 4, arrhythmia. GIDQ, Gastrointestinal Dysmotility Questionnaire, is presented in Appendix 1. GI regions depicted had 5–8 related questions, as noted. The most prominent symptoms are shown for each GI region. Incomplete BM, incomplete bowel movement. The GI peptide levels are plasma vasoactive intestinal peptide (VIP) and plasma motilin. ch: channel; Ar: % of arrhythmia; Br: % of bradygastria; N1: % of normal slow waves.