Objective: To investigate whether patients with chronic intestinal pseudo-obstruction (CIP) differ from those with enteric dysmotility (ED) regarding self-reported measures of functional status, health-related quality of life (HRQoL) and gastrointestinal symptoms.
Material and methods: The study comprised 28 patients with CIP (median age 48, range 28-80 years) and 26 with ED (median age 50, range 20-75 years). Three self-administered questionnaires were used: the Sickness Impact Profile (SIP), the Swedish HRQoL Questionnaire (SWED-QUAL) and the Gastrointestinal Symptom Rating Scale (GSRS).
Results: Patients with CIP reported significantly greater functional impairment in the aggregated physical dimension of SIP (15.4 SD 19.7) than did patients with ED (5.0 SD 7.2, p<0.01). They also reported significantly poorer general health (SWED-QUAL) (28.0 SD 20.8) compared to those with ED (44.8 SD 25.2, p <0.01). Symptom severity correlated with several measures of HRQoL and functional status in patients with CIP but abdominal pain severity was the only independent predictor of HRQoL. Abdominal pain alone explained between 21% and 67% of the variance in SWED-QUAL subscales. Likewise, the severity of indigestion symptoms among patients with CIP explained 20-24% of the variance in the SIP subscales, emotional behaviour and work. Much less correlation between symptom severity and functional impairment or HRQoL was found in patients with ED. We found no difference in symptom severity (GSRS) between the two groups.
Conclusions: Patients with CIP reported a greater impairment of functional status and HRQoL than did patients with ED. Symptom severity had a stronger influence on functional status and HRQoL in patients with CIP.