Prevalence and incidence of myocardial infarction and cerebrovascular accident in ageing persons with intellectual disability.

BACKGROUND: Epidemiological information on age-related cardiovascular disease in people with intellectual disability (ID) is scarce and inconclusive. We compared prevalence and incidence of cerebrovascular accident and myocardial infarction over age 50 in a residential population with ID to that in a general practice population. METHOD: A retrospective descriptive study was conducted, based on medical records of 510 persons with ID and 823 general practice patients, aged 50 years and over. RESULTS: Lifetime prevalences after age 50 were similar in both populations: 5.7% (95% CI 4.0-8.1%) in persons with ID and 4.4% (95% CI 3.1-6.0%) in the general population (Pearson chi-square 1.17, P = 0.279). Incidence per gender was similar between cohorts (men P = 0.86, women P = 0.36). There was no difference in incidence rates between the ID and control groups [relative risk = 1.5 (95% CI 0.9-2.4)]. CONCLUSION: Prevalence and incidence of myocardial infarction and cerebrovascular accident in ageing persons with ID do not appear different from those in the general population. It has to be taken into account that underdiagnosis and selection bias towards a more disabled group may have lead to underestimation of age-related cardiovascular morbidity, and the higher age and underrepresentation of Down syndrome to overestimation.

Feasibility and reliability of the Mini Nutritional Assessment (MNA) in older adults with intellectual disabilities.

OBJECTIVE: Feasibility and reliability of the Mini Nutritional Assessment (MNA) in older adults with intellectual disabilities (ID). DESIGN: Instrument development. SETTING: Three care providers for people with ID. PARTICIPANTS: 48 persons aged 50 years and over with borderline to profound ID and their professional caregivers. MEASUREMENTS: The MNA was performed by means of interviews with participants (N = 12) and caregivers (N = 48) and physical assessments of participants (N = 47). Aspects of feasibility: completion of interview, difficulty of answering interview items, duration of interview and completion of physical assessment. Aspects of reliability: inter-observer reliability between caregivers and between participants and caregivers, test-retest reliability and internal consistency. For inter-observer and test-retest reliability, intraclass correlation coefficients (ICC) were calculated, and for internal consistency Chronbach's alpha. RESULTS: All participants and caregivers completed the interview part. For 7 out of 12 personally interviewed participants and none of the caregivers, at least 3 out of 15 questions were difficult to answer. Mean duration of the interview was 7 minutes in participants and 4 minutes in caregivers. Physical assessment was successfully performed in 40 participants (85.1%). In the remaining 7 participants (14.9%) missing values were retrieved from the medical records. ICCs (95% confidence interval) for test-retest and inter-observer reliability between caregivers were good, 0.85 (0.72 - 0.92) and 0.86 (0.74 - 0.92) respectively, but ICC for inter-observer reliability between caregivers and persons with ID was low, 0.03 (-0.51 - 0.59). Internal consistency was 0.61. CONCLUSION: The MNA is feasible and reliable for older people with ID. Interview data can be reliably obtained through caregivers, but not through people with ID.

Lumbar spine and total-body dual-energy X-ray absorptiometry in children with severe neurological impairment and intellectual disability: a pilot study of artefacts and disrupting factors.

BACKGROUND: Children with severe neurological impairment and intellectual disability (ID) are susceptible for developing low bone mineral density (BMD) and fractures. BMD is generally measured with dual-energy X-ray absorptiometry (DXA). OBJECTIVE: To describe the occurrence of factors that may influence the feasibility of DXA and the accuracy of DXA outcome in children with severe neurological impairment and ID. MATERIALS AND METHODS: Based on literature and expert opinion, a list of disrupting factors was developed. Occurrence of these factors was assessed in 27 children who underwent DXA measurement. RESULTS: Disrupting factors that occurred most frequently were movement during measurement (82%), aberrant body composition (67%), small length for age (56%) and scoliosis (37%). The number of disrupting factors per child was mean 5.3 (range 1-8). No correlation was found between DXA outcomes and the number of disrupting factors. CONCLUSION: Factors that may negatively influence the accuracy of DXA outcome are frequently present in children with severe neurological impairment and ID. No systematic deviation of DXA outcome in coherence with the amount of disrupting factors was found, but physicians should be aware of the possible influence of disrupting factors on the accuracy of DXA.

Feasibility of quantitative ultrasound measurement of the heel bone in people with intellectual disabilities.

Low bone mineral density (BMD) and fractures are common in people with intellectual disabilities (ID). Reduced mobility in case of motor impairment and the use of anti-epileptic drugs contribute to the development of low BMD. Quantitative ultrasound (QUS) measurement of the heel bone is a non-invasive and radiation-free method for measuring bone status that can be used outside the hospital. QUS might be used for screening purposes to identify people with intellectual disability with poor bone status, who are in need of supplementary examination and treatment. To investigate feasibility of QUS in this group, QUS of the heel bone was performed on-site in 151 people with ID living in residential care. Measurements were successfully performed in at least one foot in 94.7%, were interpretable (resulting in a stiffness index) in 91.6%, and induced barely or no stress in 90.4% of the study population. Measurements generally took less than 10 min. In 93 persons bone status of both feet had been measured. The "mean percentage of the absolute difference" between outcomes of both feet was 15.5% (±15.3% SD, range 0-76.5%). Ultrasound measurement of the heel bone is a feasible and non-stressful method for measuring bone status in people with ID. Since the mean difference between outcomes of the left and right foot were large, measurement of both feet is recommended to prevent inaccurate interpretation.

Use of antipsychotic drugs in individuals with intellectual disability (ID) in the Netherlands: prevalence and reasons for prescription.

BACKGROUND: We investigated antipsychotic drug prescription practice of Dutch ID physicians, studying prevalence of antipsychotic drug use, reasons for prescription and the relationship between these reasons and patient characteristics. METHODS: A cross-sectional study of medical and pharmaceutical records in a population living in residential settings of three care providers for persons with IDs in the Netherlands (n = 2373). RESULTS: Prevalence of antipsychotic drug use was 32.2% (95% CI 30.1-33.9). Behavioural problems were the reason for prescription of antipsychotic drugs in 58% of cases and psychotic disorder or psychotic symptoms in 22.5%. In 11.7% the diagnosis of psychotic disorder was specified according to DSM-IV criteria. In 18.5% the reason for prescription was not noted in the medical record. Behavioural problems as reason for prescription was associated with profound and severe ID, living in a central location and male sex. Psychotic disorder specified according to DSM-IV as indication for prescription was negatively associated with profound and severe ID and with presence of an additional mental disorder. Absence of a noted reason for prescription was associated with female sex and with the presence of an additional mental disorder. DISCUSSION: Current prevalence and reason for prescription of antipsychotic drugs are similar with outcomes of previous studies. Our results show the continuing lack of evidence-based psychopharmacological treatment in mental health care for persons with IDs.

Validation of deuterium and oxygen18 in urine and saliva samples from children using on-line continuous-flow isotope ratio mass spectrometry.

The doubly labelled water method is valuable for measuring energy expenditure in humans. It usually involves blood or urine sampling, which might be difficult in neonates and children with cerebral palsy or other disabilities. We therefore aimed to validate a method making use of saliva samples analyzed by automated thermal conversion elemental analyzer in combination with isotope ratio mass spectrometry (TC-EA/IRMS). The subjects received labelled water orally and urine and saliva samples were collected and analyzed. Deuterium as well as oxygen18 was measured in one single run using a peak jump method. Excellent linearity was found for measurement of enrichments of deuterium (R2 = 0.9999) and oxygen18 (R2 = 0.9999). The intra-assay precision and the inter-assay precision of the measurement of two standards were good for both deuterium and oxygen18. The variation between urine and saliva samples was small (4.83% for deuterium and 2.33% for oxygen18 n = 40). Saliva sampling is to be preferred, therefore, as it can be easily collected and is non-invasive. Moreover, its time of production is almost exactly known. The TC-EA/IRMS method is a good alternative to the more laborious off-line IRMS measurements.

Unnoticed post-void residual urine volume in people with moderate to severe intellectual disabilities: prevalence and risk factors.

BACKGROUND: Increased post-void residual urine volume (PVR) is often seen in geriatric populations. People with intellectual disabilities (ID) have risk factors in common with these populations. AIMS: To investigate in adults with ID: Feasibility of portable ultrasound bladder scanning; Prevalence of PVR; and Relations with proposed risk factors for PVR. METHODS: In a cross-sectional design, PVR was measured using ultrasound scanning in 346 adults with moderate to severe ID aged 18-82 years. Relationship between increased PVR and the following risk factors was assessed: age, level of ID, gender, ambulancy, medication, chronic illnesses, incontinence and profound multiple disabilities (PMD). Acceptation of scanning and manageability were noted. RESULTS: Feasibility: All participants were cooperatively undergoing the ultrasound scan and all outcomes were sufficiently interpretable. Prevalence: PVR >or= 150 mL was newly identified in 30/346 persons (8.7%, 95% confidence interval 5.92-12.14). Associations: Higher age (P = 0.001), laxative use (P = 0.001), chronic illnesses other than epilepsy (P = 0.005), profound ID (P = 0.008), incontinence (P = 0.048) and immobility(P = 0.005) are determinants that were associated with urinary retention. CONCLUSIONS: The bladder ultrasound scan is a feasible method to identify increased PVR in adults with more severe levels of ID. The prevalence of PVR in adults is similar to prevalences found in the geriatric general population.

Prevalence of hypertension in adults with intellectual disability in the Netherlands.

BACKGROUND: Literature on the prevalence of hypertension in people with intellectual disability (ID) is mostly based on file studies or on measurements limited to the age group below 50 years. We measured and calculated the prevalence of hypertension in adults with ID and studied the distribution of hypertension in relation to age, gender, diagnosis of Down's syndrome and level of ID. METHODS: In an observational cross-sectional study, standardized blood pressure measurements were obtained from 258 randomly selected adult clients of three Dutch care providers for people with ID. Hypertension was defined as a mean systolic blood pressure above 140 mm Hg on repeated measurements. RESULTS: The overall prevalence rate of hypertension was 17.4% (95% CI 12.28-22.46). This was comparable to the prevalence in the general Dutch population. No accurate blood pressure measurement could be performed in 28.4% of people with severe and profound ID owing to repetitive physical activity or resistance. Hypertension was significantly related to older age and absence of Down's syndrome; no correlation with gender or level of ID could be shown. RECOMMENDATION: The risk factor hypertension should be detected and treated in the same manner as in the general population following national guidelines.

Octreotide therapy in dumping syndrome: Analysis of long-term results.

BACKGROUND: Octreotide therapy is effective in controlling severe dumping symptoms during short-term follow-up but little is known about long-term results. AIM: To report on the long-term results of patients with severe dumping syndrome treated at the Leiden University Medical Center with subcutaneous or depot intramuscular (long-acting release) octreotide. METHODS: Follow-up of 34 patients with severe dumping syndrome refractory to other therapeutic measures treated between 1987 and 2005 with octreotide subcutaneous/long-acting release. At regular intervals symptoms, quality of life, weight, faecal fat excretion and gallstone formation were evaluated. RESULTS: All patients had excellent initial relief of symptoms during octreotide subcutaneous therapy. However, during follow-up 16 patients stopped therapy because of side effects (n = 9) or loss of efficacy (n = 7). Four patients died. Fourteen patients (41%) remain using octreotide (follow-up 93 +/- 15 months), seven are on octreotide subcutaneous and seven on octreotide long-acting release. Patients with severe dumping (both early and late) do better on subcutaneous than long-acting release despite the inconvenience of frequent injections. Dumping symptoms are reduced by 50% even in long-term users. Body weight continues to increase during therapy despite more pronounced steatorrhoea. CONCLUSION: The long-term the efficacy of octreotide is much less favourable compared with short-term treatment.

Efficacy of depot long-acting release octreotide therapy in severe dumping syndrome.

BACKGROUND: Dumping syndrome is a serious complication occurring in 10% of patients after gastric surgery. Dumping symptoms are effectively reduced by subcutaneous application of the somatostatin analogue octreotide, but side-effects limit its use. AIM: To evaluate the efficacy of depot long-acting release octreotide (Sandostatin-LAR) vs. octreotide subcutaneous on dumping symptoms, quality of life and side-effects. METHODS: Twelve patients (five females, age 58 +/- 3 years) with severe dumping symptoms, requiring daily use of octreotide subcutaneous, were included in an open study and changed from octreotide subcutaneous after a 2 weeks washout to Sandostatin-LAR 10 mg i.m., every 4 weeks for 6 months. Symptoms (diary), body weight, fat excretion, food intake and Gastrointestinal Specific Quality of Life Index were evaluated. RESULTS: Gastrointestinal Specific Quality of Life Index increased significantly (P < 0.05) during Sandostatin-LAR treatment (88 +/- 4) compared with octreotide (74 +/- 4) and washout (75 +/- 6). During Sandostatin-LAR treatment, abdominal symptom score was lower compared with octreotide and washout, but not significantly. During Sandostatin-LAR treatment, body weight increased (66 +/- 4 to 70 +/- 3 kg; P = 0.19). CONCLUSIONS: Sandostatin-LAR is at least as effective as octreotide subcutaneous in suppressing symptoms in patients with severe dumping syndrome and is more effective than octreotide subcutaneous in increasing body weight and quality of life.

Compliance, tone and sensitivity of the rectum in different subtypes of irritable bowel syndrome.

Irritable bowel syndrome (IBS) consists of various subtypes. It is not known whether these subtypes share a common pathophysiology. Evaluation of motor and sensory function of the rectum using a barostat may help to explore a common pathophysiological background or differences in pathophysiology in subtypes of IBS. We have evaluated compliance, tone and sensitivity of the rectum, in both fasting state and postprandially, using a computerized barostat in 15 patients with diarrhoea-predominant IBS (IBS-D), 14 patients with constipation-predominant IBS (IBS-C) and compared the results with those obtained in 12 healthy controls. Rectal compliance as calculated over the steep part of the pressure-volume curve (17-23 mmHg) was decreased in both IBS groups (IBS-D 8.0 +/- 1.4 mL mmHg-1; IBS-C 5.6 +/- 1.1 mL mmHg-1) compared with controls (24.7 +/- 3.5 mL mmHg-1). The perception of urge was increased only in IBS-D patients, whereas pain perception was significantly increased in both IBS groups. Spontaneous adaptive relaxation was decreased in IBS-D patients. Postprandially, rectal volume decreased significantly in the controls and in IBS-D patients, but not in IBS-C patients. In conclusion, both rectal motor and sensory characteristics are different between IBS-D and IBS-C patients. Therefore, testing of rectal visceroperception, adaptive relaxation and the rectal response to a meal may help distinguish groups of patients with different subtypes of irritable bowel syndrome.

Influence of gender on proximal gastric motor and sensory function.

OBJECTIVE: Gender-related differences have been demonstrated with regard to GI motility: gallbladder contraction, colonic transit, and gastric emptying are delayed in women. It is not known whether gender influences proximal gastric motility and perception. METHODS: We have studied the influence of gender on proximal gastric motility and perception under fasting and postprandial conditions by retrospective analysis of data obtained in 99 healthy volunteers (42 men, 57 women) who participated in barostat studies performed according to standardized protocols at the Leiden University Medical Center (Leiden, The Netherlands) between 1996 and 2000. RESULTS: Minimal distending pressure (MDP) was significantly higher in women than in men (respectively, 6.8+/-0.2 vs 5.5+/-0.2 mm Hg; p < 0.001). During stepwise pressure distensions pressure-volume curves were similar in both sexes after correction for MDP, whereas perception of fullness and abdominal pressure increased significantly (p < 0.05) more rapidly in women. Before the meal intragastric volumes (at MDP + 2 mm Hg) did not differ between sexes. After the meal gastric relaxation in the first 30 min did not differ in women and men (respectively, 186+/-23 ml and 140+/-32 ml). However, from 30 until 90 min after the meal a significantly (p < 0.05) delayed return of intragastric volume to basal was seen in women. Perception of postprandial nausea was significantly (p < 0.01) increased in women. Perception of postprandial fullness remained increased for a longer period of time in women. CONCLUSIONS: Proximal gastric motility and perception are influenced by gender. Gender-related differences in postprandial proximal gastric motility and perception should be taken into account in barostat studies comparing patients with controls.

[Repair and revision 1. Repair or replacement of amalgam]. / Reparatie en revisie 1. Repareren of vervangen van amalgaam.

Amalgam restorations may suffer from all sorts of shortcomings. Three options are available to the dental practitioner: replacement, repair or no repair. Minor shortcomings which do not cause any harm are better left untreated. Reasons for repair or replacement are: secondary caries, failing proximal contact, cervical overhanging, bulk fracture, fracture of adjacent tooth structure and postoperative sensibility. Repair will cause less iatrogenic damage than complete replacement, and is therefore preferred. Amalgam restorations can be repaired with composite resin (in conjunction with an adhesive) or with amalgam, but a repaired restoration is less strong than a restoration made in one piece.

Comparison of ileoanal pouch and rectal function measured by barostat.

The aim of this study was to compare pouch and rectal sensory and motor characteristics and to assess the influence of a meal on pouch tone and motility. Fifteen patients with an ileoanal J-pouch, with adequate pouch function and 12 healthy controls were studied. Visceral compliance was assessed using an electronic barostat by a pressure distension procedure, during which also sensitivity was scored by visual analog scales (VAS). The response to a meal was assessed during set pressure. Pouch and rectal compliance were not significantly different (9.3+/-0.7 vs 10.6+/-1.1 ml/mm Hg). VAS score for urge at 28 mm Hg was reduced in patients: 2.4+/-0.5 cm vs 4.7+/-0.9 cm in controls (P < 0.05). The postprandial decrease in intra-bag volume was more pronounced in patients (44+/-11%) than in controls (9+/-6%, P < 0.01). Postprandial phasic contractions were also more pronounced in patients. In conclusion, compliance is not significantly different between ileoanal pouch and rectum; differences in sensitivity reach significance only at high pressure. Significant differences were especially observed in the postprandial state with an increase in tone and frequency of phasic contractions in pouch patients.

Reproducibility of antroduodenal motility during prolonged ambulatory recording.

Ambulatory recording of antroduodenal manometry is a novel technique with several advantages over standard stationary manometry recording. Although the feasibility of this technique in clinical practice has been demonstrated, reproducibility of antroduodenal motility recorded by means of ambulatory manometry has not been investigated. To test whether antroduodenal motility recorded by ambulatory manometry is reproducible, we performed two 24-h ambulatory antroduodenal manometry recordings in 18 healthy subjects according to an identical protocol with a 1-week interval. Motility was recorded with a five-channel solid-state catheter. Postprandial motility was recorded after consumption of two test meals and interdigestive motility was recorded nocturnally. Postprandial antroduodenal motor characteristics were identical between the separate recordings. The number and duration of nocturnal cycles of the interdigestive migrating motor complex were also in the same range. Phase III characteristics in general were not different between the two recordings. Only minor alterations were observed in the duration of phase III motor fronts with duodenal onset and in the number of interdigestive cycles concluded by duodenal onset phase III. Parameters obtained by qualitative analysis were comparable between the two recordings. The antroduodenal motility pattern, when measured by ambulatory recording with solid state catheters under standardized conditions, is very reproducible.

Motor and sensory function of the rectum in different subtypes of constipation.

BACKGROUND: It is not known whether evaluation of motor and sensory function of the rectum using a barostat may help to distinguish subtypes of constipation. METHODS: Motor and sensory function of the rectum have been evaluated using a barostat in 14 patients with slow transit constipation (STC), 12 patients with constipation-predominant irritable bowel syndrome (IBS) and 18 healthy controls. First minimal distending pressure was determined, after which spontaneous adaptive relaxation of the rectum was monitored. Then a step-wise isobaric distension procedure was performed, during which symptom perception was determined. The distension was followed by a 90-min barostat procedure: for 30 min in the basal state followed by ingestion of a semi-liquid meal (postprandial state). RESULTS: Minimal distending pressure was not different between both patient groups and controls, neither was compliance different between constipated patients and controls. The degree of spontaneous adaptive relaxation was in the same range in all groups. During distensions with high pressures, the perception of urge was significantly reduced in STC patients compared to IBS and controls, while the perception of pain was significantly increased in IBS versus STC and controls. Postprandially, a small decrease of rectal volume was only observed in the control group, but not in the patients. CONCLUSIONS: Rectal motor characteristics are not different between patients with constipation-predominant IBS, patients with STC and healthy controls while during isobaric distensions, sensations of urge were reduced in STC and sensations of pain were increased in IBS. Rectal visceroperception testing may help distinguish groups of patients with different subtypes of constipation.

Result of two randomized trials comparing nolatrexed (Thymitaq) versus methotrexate in patients with recurrent head and neck cancer.

We report on two randomized trials performed in the USA and Europe, which compared methotrexate and nolatrexed as treatment for patients with recurrent head and neck cancer. Eligibility criteria included: histologically confirmed squamous-cell carcinoma, measurable disease, adequate hematological, renal and hepatic functions, failure of a first-line chemotherapy, and informed consent. Methotrexate 40 mg/m2 was weekly given by short infusion, and nolatrexed 725 mg/m2 per day was administered as a five-day continuous infusion, every three weeks. A total of 139 patients (63 in the USA. 76 in Europe) were randomized based on a ratio of 2/1: 93 and 46 received nolatrexed and methotrexate, respectively. Patient characteristics included 115 males and 24 females; median age 60 years. In the nolatrexed arm, the following grade 3-4 toxicities occurred: neutropenia (29.9%) with 3.1% of febrile neutropenia, mucositis (33.3%), and vomiting (10.3%). In the MTX arm, the grade 3-4 toxicities were neutropenia (7.1%) and mucositis (6.9%). There was no difference in activity between the nolatrexed and the methotrexate treatment: 3.3% and 10.8% of objective responses, 1.9 versus 1.5 months of disease-free progression and 3.5 versus 3.7 months of overall survival, respectively. Nolatrexed has demonstrated a similar activity to methotrexate.

Proximal gastric motor and sensory function in slow transit constipation.

BACKGROUND: Slow transit constipation may be part of a more generalized gastrointestinal motility disorder. METHODS: Gastric motor and sensory function were evaluated using a barostat in 17 patients with slow transit constipation and in 16 healthy controls. A step-wise isobaric distension procedure was performed, followed by a barostat procedure including a liquid meal. Symptoms were scored using visual analog scales. Plasma levels of gastrointestinal hormones were determined postprandially. RESULTS: Proximal gastric compliance was significantly reduced in the patients. Basal gastric volume did not differ between patients and controls. Postprandial fundus relaxation was significantly reduced in the patients and correlated significantly with daily upper gastrointestinal symptoms. Postprandial secretion of cholecystokinin and gastrin was reduced in the patients. CONCLUSIONS: In patients with slow transit constipation, proximal gastric compliance is reduced and postprandial fundus relaxation is impaired. These findings support the hypothesis that slow transit constipation may be part of a pan-enteric disorder.

Impact of qualified (indeterminate) diagnoses on the accuracy of renal, thyroid, and breast fine-needle aspiration biopsy.

A qualified (indeterminate) diagnosis (QD), such as "suggestive of malignancy," is thought to complicate patient management by heightening clinical uncertainty. We report that QDs increase the overall effectiveness of renal, thyroid, and breast fine-needle aspiration (FNA) biopsy and that the probability that a qualified diagnosis is negative (QDN) can be predicted by the formula QDN = number of QDs x (proportion of false-negative outcomes/disease prevalence expressed as a proportion). Results of renal (n = 24), thyroid (n = 163), and breast (n = 456) FNA biopsies performed from January 1992 through December 1998 were reviewed and correlated with results of tissue biopsies. For each body site, the FNA biopsies were placed into 1 of 2 diagnostic categories: unqualified diagnoses (UQDs) or QDs. Comparison of test performance characteristics for UQDs only and UQDs combined with QDs demonstrated that inclusion of UQDs increased FNA sensitivity and reduced FNA false-negative diagnoses. More important, the probability that a QD was negative could be predicted from test performance characteristics derived from UQDs.

Proximal and distal gut hormone secretion in slow transit constipation.

BACKGROUND: It has been suggested that slow transit constipation might be part of a panenteric disorder. Gastrointestinal peptides are involved in regulation of motility. DESIGN: In the present study we have evaluated whether plasma levels of proximal and distal gut hormones in the fasting state, and for 120 min after a solid meal in 29 patients with slow transit constipation are different from those obtained from 29 healthy controls. Plasma levels of the gut hormones cholecystokinin, gastrin, pancreatic polypeptide, motilin, neurotensin and peptide YY were determined using sensitive radioimmunoassays. In the patient group, oro-caecal transit time was determined by means of the hydrogen breath test on a separate test day. The results of transit were related with postprandial hormone secretion. RESULTS: Fasting plasma levels of cholecystokinin and pancreatic polypeptide were significantly (P < 0.05) increased in constipated patients. Postprandially, secretion of pancreatic polypeptide and cholecystokinin was significantly (P < 0.05) increased in the patients, while secretion of peptide YY was significantly (P < 0.05) reduced. Plasma motilin levels were not different between patients and controls. Altered postprandial hormone secretion was mainly observed in constipated patients with prolonged oro-caecal transit time. CONCLUSIONS: In patients with slow transit constipation, fasting and postprandial secretion of proximal gut hormones apart from motilin is increased and of distal gut hormones decreased, especially in those with severely delayed intestinal transit.