Results From a Psychometric Validation Study: Patients With Irritable Bowel Syndrome Report Higher Symptom Burden Using End-of-Day Vs Real-Time Assessment.

INTRODUCTION: Real-time assessment of gastrointestinal (GI) symptoms in irritable bowel syndrome (IBS) using the experience sampling method (ESM) is suggested as a more appropriate approach than currently used end-of-day or end-of-week reports. This psychometric evaluation study assesses the validity and reliability of a previously developed ESM-based patient-reported outcome measure (PROM) for real-time GI symptom assessment in IBS. METHODS: This multicenter validation study included 230 Rome IV patients with IBS (80% female; mean age 41.2 years) in 3 European countries. Patients completed the electronic ESM-PROM (up to 10 random moments daily, with a weekly minimum completion rate of 33%) and an end-of-day symptom diary for 7 consecutive days. End-of-week questionnaires (Gastrointestinal Symptom Rating Scale for IBS, IBS Severity Scoring System, Patient Health Questionnaire-9, and Generalized Anxiety Disorder-7) were completed at the end of the 7-day period. RESULTS: The ESM assessment had a mean completion rate of 71%. Strong and significant correlations (0.651-0.956) with moderate-to-good consistency (intra-class correlation coefficients 0.580-0.779) were observed between ESM and end-of-day scores. However, end-of-day scores were significantly higher (Δ0.790-1.758, P < 0.001) than mean daily ESM scores. Differences with end-of-week scores were more pronounced, with weaker correlations (Pearson's r 0.393-0.802). ESM-PROM exhibited moderate-to-good internal consistency (Cronbach's α 0.585-0.887) across 5 symptom domains. First and second half-week scores demonstrated good-to-excellent consistency (intraclass correlation coefficients 0.871-0.958). DISCUSSION: Psychometric evaluation demonstrated strong validity and reliability of the ESM-PROM for real-time GI symptom assessment in IBS. In addition, the ESM-PROM provides a precise and reliable ascertainment of individual symptom pattern and trigger interactions, without the bias of peak reporting when compared with retrospective methods. This highlights its potential as a valuable tool for personalized healthcare in monitoring disease course and treatment response in patients with IBS.

Poor Subjective Sleep Quality Predicts Symptoms in Irritable Bowel Syndrome Using the Experience Sampling Method.

INTRODUCTION: Sleep quality may affect symptom experience in irritable bowel syndrome (IBS). Our aim was to investigate the relationship between sleep quality and gastrointestinal (GI) symptoms using actigraphy and the experience sampling method. METHODS: Patients with IBS were recruited from a tertiary Neurogastroenterology clinic and the community. GI symptoms and mood were recorded on a smartphone application, 10 times per day, over 7 consecutive days. Subjective sleep quality was recorded every morning to reflect the night before. Objective measures of sleep quality were estimated from wrist-worn actigraphy. Cross-lagged structural equation models were built to assess the directionality of sleep-symptom relationships over time. RESULTS: Eighty patients with IBS completed the study (mean age: 37 years [range 20-68], 89% female, 78% community). Approximately 66% had a Pittsburgh Sleep Quality Index score ≥ 8, indicating a clinically significant sleep disturbance. Approximately 82% (95% CI: 72-90) screened positive for a sleep disorder, most commonly insomnia. In cross-lagged analysis, poor subjective sleep quality predicted next-day abdominal pain (0.036 < P < 0.040) and lower GI symptoms (0.030 < P < 0.032), but not vice versa. No significant relationship with GI symptoms was found for any objective sleep measure using actigraphy. DISCUSSION: Poor subjective sleep quality was associated with higher next-day lower GI symptom levels, but not vice versa. Objective sleep measures did not predict next-day abdominal symptoms, potentially supporting the conclusion that it is the perception of sleep quality that is most influential. This study may be used to guide future research into the effect of sleep interventions on GI symptoms.

Comprehensive Assessment of Nutrition and Dietary Influences in Hypermobile Ehlers-Danlos Syndrome-A Cross-Sectional Study.

INTRODUCTION: Disorders of gut-brain interaction (DGBI) are common in patients with hypermobile Ehlers-Danlos syndrome/hypermobility spectrum disorder (hEDS/HSD). Food is a known trigger for DGBI symptoms, which often leads to dietary alterations and, increasingly, nutrition support. We aimed to explore dietary behaviors and influencing factors in patients with hEDS/HSD. METHODS: In a cross-sectional study, patients with hEDS/HSD were recruited from Ehlers-Danlos Support UK (nontertiary) and tertiary neurogastroenterology clinics to complete questionnaires characterizing the following: dietary behaviors, nutrition support, DGBI (Rome IV), gastrointestinal symptoms, anxiety, depression, avoidant restrictive food intake disorder (ARFID), mast cell activation syndrome, postural tachycardia syndrome (PoTS), and quality of life. We used stepwise logistic regression to ascertain which factors were associated with dietary behaviors and nutrition support. RESULTS: Of 680 participants (95% female, median age 39 years), 62.1% altered their diet in the last year and 62.3% regularly skipped meals. Altered diet was associated with the following: reflux symptoms ( P < 0.001), functional dyspepsia ( P = 0.008), reported mast cell activation syndrome ( P < 0.001), and a positive screen for ARFID, specifically fear of eating and low interest ( P < 0.001). Approximately 31.7% of those who altered their diet required nutrition support. The strongest predictor of requiring nutrition support was a positive screen for ARFID, specifically fear of eating (OR: 4.97, 95% CI: 2.09-11.8, P < 0.001). DISCUSSION: Altered diet is very common in the patients with hEDS/HSD we studied and influenced by functional dyspepsia, reflux symptoms, and ARFID. Those with ARFID have a 4-fold increased risk of requiring nutrition support, and therefore, it is paramount that psychological support is offered in parallel with dietary support in the management of DGBI in hEDS/HSD.

Randomised, placebo-controlled trial and meta-analysis show benefit of ondansetron for irritable bowel syndrome with diarrhoea: The TRITON trial.

BACKGROUND: Ondansetron may be beneficial in irritable bowel syndrome with diarrhoea (IBS-D). AIM: To conduct a 12-week parallel group, randomised, double-blind, placebo-controlled trial of ondansetron 4 mg o.d. (titrated up to 8 mg t.d.s.) in 400 IBS-D patients. PRIMARY ENDPOINT: % responders using the Food and Drug Administration (FDA) composite endpoint. Secondary and mechanistic endpoints included stool consistency (Bristol Stool Form Scale) and whole gut transit time (WGTT). After literature review, results were pooled with other placebo-controlled trials in a meta-analysis to estimate relative risks (RR), 95% confidence intervals (CIs) and number needed to treat (NNT). RESULTS: Eighty patients were randomised. On intention-to-treat analysis, 15/37 (40.5%; 95% CI 24.7%-56.4%) met the primary endpoint on ondansetron versus 12/43 (27.9%; 95% CI 14.5%-41.3%) on placebo (p = 0.19). Ondansetron improved stool consistency compared with placebo (adjusted mean difference - 0.7; 95% CI -1.0 to-0.3, p < 0.001). Ondansetron increased WGTT between baseline and week 12 (mean (SD) difference 3.8 (9.1) hours, versus placebo -2.2 (10.3) hours, p = 0.01). Meta-analysis of 327 patients from this, and two similar trials, demonstrated ondansetron was superior to placebo for the FDA composite endpoint (RR of symptoms not responding = 0.86; 95% CI 0.75-0.98, NNT = 9) and stool response (RR = 0.65; 95% CI 0.52-0.82, NNT = 5), but not abdominal pain response (RR = 0.95; 95% CI 0.74-1.20). CONCLUSIONS: Although small numbers meant the primary endpoint was not met in this trial, when pooled with other similar trials meta-analysis suggests ondansetron improves stool consistency and reduces days with loose stool and urgency. Trial registration - http://www.isrctn.com/ISRCTN17508514.

Spinal Infections Among Patients With Long-Term Central Venous Catheters for Home Parenteral Nutrition: A Descriptive Case Series.

Spinal infections are a rare yet serious metastatic complication of bacteremia among patients with long-term central venous catheters (CVCs) for which clinicians must remain vigilant. We performed a retrospective review of all cases of spinal infection occurring in the context of a CVC for long-term parenteral nutrition (PN) managed in our department between January 2010 and October 2013, a cohort of 310 patients over this time period. Six patients were identified (mean age, 65 years; 5 male). One hundred percent of patients presented with spinal pain (5/6 cervical, 1/6 thoracic). Organisms were cultured from the CVC in 5 of 6 patients. In all cases, the white blood cell count was normal, and in 5 of 6, C-reactive protein was normal. All diagnoses were confirmed on magnetic resonance imaging (MRI), and in 3 of 6 cases, an MRI was repeated (on the advice of neurosurgical colleagues) to confirm resolution of changes after a period of antimicrobial therapy. There was no clear correlation between duration of PN or number of days following CVC insertion and onset of infection. The CVC was replaced in 4 of 6 patients at the time of diagnosis, delayed removal in 1 of 6, and salvaged in the remaining case. Although rare, a high index of suspicion is needed in patients receiving long-term PN who present with spinal pain. Peripheral inflammatory markers may not be elevated. MRI should be performed and patients should be treated with antibiotics alongside involvement of local microbiology and neurosurgical teams. Multidisciplinary discussion on CVC salvage in these cases is important, especially in cases of challenging vascular anatomy.

Spinal Infections Among Patients With Long-Term Central Venous Catheters for Home Parenteral Nutrition.

Spinal infections are a rare yet serious metastatic complication of bacteremia among patients with long-term central venous catheters (CVCs) for which clinicians must remain vigilant. We performed a retrospective review of all cases of spinal infection occurring in the context of a CVC for long-term parenteral nutrition (PN) managed in our department between January 2010 and October 2013, a cohort of 310 patients over this time period. Six patients were identified (mean age, 65 years; 5 male). One hundred percent of patients presented with spinal pain (5/6 cervical, 1/6 thoracic). Organisms were cultured from the CVC in 5 of 6 patients. In all cases, the white blood cell count was normal, and in 5 of 6, C-reactive protein was normal. All diagnoses were confirmed on magnetic resonance imaging (MRI), and in 3 of 6 cases, an MRI was repeated (on the advice of neurosurgical colleagues) to confirm resolution of changes after a period of antimicrobial therapy. There was no clear correlation between duration of PN or number of days following CVC insertion and onset of infection. The CVC was replaced in 4 of 6 patients at the time of diagnosis, delayed removal in 1 of 6, and salvaged in the remaining case. Although rare, a high index of suspicion is needed in patients receiving long-term PN who present with spinal pain. Peripheral inflammatory markers may not be elevated. MRI should be performed and patients should be treated with antibiotics alongside involvement of local microbiology and neurosurgical teams. Multidisciplinary discussion on CVC salvage in these cases is important, especially in cases of challenging vascular anatomy.

A fateful kiss: the use of CT coronary angiogram in the diagnosis of non-cardiac chest pathology.

A 34-year-old dental nurse presented with a 2-day history of retrosternal chest pain that was constant and 'burning' in nature. She was otherwise fit and well, no significant prior medical history and no ischaemic heart disease risk factors. Clinical examination was entirely normal apart from pyrexia of 38.3°C. Admission ECG showed ST depression in the inferior and anterolateral leads suggestive of myocardial ischaemia, consequently a CT coronary angiogram (CTCA) was performed. This showed normal coronary arteries, incidental distal oesophageal thickening was seen. Further history taking revealed that her youngest daughter had recently suffered from cold sores. The patient went on to have a diagnostic procedure, an oesophagogastroduodenoscopy. Biopsies confirmed acute oesophagitis with features suggestive of herpes virus infection. The patient responded promptly to oral acyclovir. This case highlights the value of CT coronary angiogram in identifying non-cardiac pathology in patients with a low pretest probability of coronary artery disease.