Reliability and validity of the Brief Illness Perception Questionnaire (B-IPQ) in individuals with a recently acquired spinal cord injury

Objective To assess the reliability and validity of the Brief Illness Perception Questionnaire (B-IPQ) and possible subscales, and to interpret Brief Illness Perception Questionnaire (B-IPQ) total scores, in individuals with a spinal cord injury. Design Cross-sectional Setting Seven Dutch rehabilitation centres Subjects Individuals with a recently acquired traumatic or non-traumatic spinal cord injury at the start of inpatient spinal cord injury rehabilitation (N = 270). Main measure The Brief Illness Perception Questionnaire (B-IPQ) consists of eight items on an individual's cognitive and emotional representation of one's health conditions. Principal component analysis was performed to identify possible Brief Illness Perception Questionnaire (B-IPQ) subscales. Validity was assessed by testing hypotheses on correlations between the Brief Illness Perception Questionnaire (B-IPQ) and other measures. Cut-off points of the Brief Illness Perception Questionnaire (B-IPQ) total score were determined. Results Mean (SD) age of participants was 60.1 (16.5) years, 188 (71%) were male, and 119 (44%) had tetraplegia. Three potential subscales were revealed. Cronbach's alpha was acceptable for only one subscale. This subscale was named 'consequences' and included the items 'consequences', 'symptom burden', 'concern', and 'emotions'. The Brief Illness Perception Questionnaire (B-IPQ) total and the consequence subscale showed the expected strong correlations (>.50) with symptoms of anxiety and depression. Mean (SD) scores were 40.9 (12.3) on the 8-item Brief Illness Perception Questionnaire (B-IPQ) (range 0-80) and 25.1 (8.1) on the consequences subscale (range 0-40). Cut-off points for the Brief Illness Perception Questionnaire (B-IPQ) total score were determined as follows: = 50 indicating high experienced threat. Conclusion The Brief Illness Perception Questionnaire (B-IPQ) total and consequences subscale seem applicable in individuals with a spinal cord injury in the rehabilitation practice and research

Stenting or balloon angioplasty of stenosed autologous saphenous vein grafts in pigs

In a model of early and aggressive vein graft stenosis in pigs, an intervention was performed with a single stent (n = 12 grafts), multiple stents (n = 6), or balloon angioplasty (n = 6), while grafts with mild stenoses were left untreated (n = 8). Four weeks after intervention, angiography showed that grafts with single stents, balloon angioplasty, or untreated grafts had patency rates of 92%, 83%, and 83%, respectively. Grafts receiving multiple stents, however, showed only a 17% patency rate (p < 0.05). Balloon dilatation or placement of a single stent improved the angiographic minimal diameter by 0.6 ± 0.2 and 0.8 ± 0.3 mm, respectively, over the short term, but this gain was lost during the follow-up period. Multiple stents showed a similar gain (0.5 ± 0.2 mm) but more loss occurred during the follow-up period (2.4 ± 0.2 mm). Histology revealed no significant differences between the treatment groups except for the prolonged presence of thrombus remnants in association with the stent wires. In conclusion, single stents and balloon angioplasty show good patency in early saphenous vein graft narrowing but multiple stents show a high occlusion rate

Post-traumatic stress disorder symptoms and pain intensity in persons with spinal cord injury

Study design Cross-sectional. Objectives To examine the association between post-traumatic stress disorder (PTSD) symptoms and pain intensity, taking symptoms of anxiety and depression into account within persons with spinal cord injury (SCI). Setting Persons with SCI, who visited a Dutch rehabilitation centre between 2005 and 2010, were invited to complete a survey. Methods PTSD symptoms were measured with the Trauma Screening Questionnaire (TSQ), pain intensity with an 11-point Numerical Rating Scale (NRS), and symptoms of anxiety and depression with the Hospital Anxiety and Depression Scale (HADS). To determine associations between PTSD symptoms and pain intensity, linear regression analyses were performed. Confounding variables representing anxiety and depression were added to the final model. Results In total, 175 participants (55.8% traumatic, 29.1% complete) were included (response rate of 31.7%). Of them, 11.4% had clinically relevant symptoms of probable PTSD (TSQ score >= 6) 69.8% experienced moderate to severe pain levels (NRS >= 4), 14.9% had symptoms of anxiety and 20.8% symptoms of depression (HADS scores >= 11). Levels of PTSD symptoms were strongly associated with symptoms of anxiety (0.54) and depression (0.49). Bivariate analyses showed a moderate significant association (0.30) between PTSD symptoms and pain intensity. This association became small (0.10) when anxiety and depression comorbidity were factored into the final regression model. Conclusions No independent association between PTSD symptoms and pain intensity was shown when adjusted for anxiety and depression. Results of this study suggest the usefulness of screening for PTSD in persons with SCI (regardless of injury cause or type/level) who score high on symptoms of anxiety/depression

Recommendations for clinical research in children presenting to primary care out-of-hours services

BACKGROUND: Research in primary care is essential, but recruiting children in this setting can be complex and may cause selection bias. Challenges surrounding informed consent, particularly in an acute clinical setting, can undermine feasibility. The off-protocol use of an intervention nearing implementation has become common in pragmatic randomized controlled trials (RCTs) set in primary care. AIM: To describe how the informed consent procedure affects study inclusion and to assess how off-protocol medication prescribing affects participant selection in a paediatric RCT. DESIGN: A pragmatic RCT evaluating the cost-effectiveness of oral ondansetron in children diagnosed with acute gastroenteritis in primary care out-of-hours services and a parallel cohort study. METHOD: Consecutive children aged 6 months to 6 years attending primary care out-of-hours services with acute gastroenteritis were evaluated to assess the feasibility of obtaining informed consent, the off-protocol use of ondansetron, and other inclusion/exclusion criteria. RESULTS: The RCTs feasibility was reduced by the informed consent procedure because 39.0% (325/834) of children were accompanied by only one parent. General practitioners prescribed ondansetron off-protocol to 34 children (4.1%), whereof 19 children were eligible for the RCT. RCT-eligible children included in the parallel cohort had fewer risk factors for dehydration than children in the RCT despite similar dehydration assessments by general practitioners. CONCLUSION: The informed consent procedure and off-protocol use of study medication affect the inclusion rate but had little effect on selection. A parallel cohort study alongside the RCT can help evaluate selection bias, and a pilot study can reveal potential barriers to inclusion

Detection and localization of early- and late-stage cancers using platelet RNA

Cancer patients benefit from early tumor detection since treatment outcomes are more favorable for less advanced cancers. Platelets are involved in cancer progression and are considered a promising biosource for cancer detection, as they alter their RNA content upon local and systemic cues. We show that tumor-educated platelet (TEP) RNA-based blood tests enable the detection of 18 cancer types. With 99% specificity in asymptomatic controls, thromboSeq correctly detected the presence of cancer in two-thirds of 1,096 blood samples from stage I–IV cancer patients and in half of 352 stage I–III tumors. Symptomatic controls, including inflammatory and cardiovascular diseases, and benign tumors had increased false-positive test results with an average specificity of 78%. Moreover, thromboSeq determined the tumor site of origin in five different tumor types correctly in over 80% of the cancer patients. These results highlight the potential properties of TEP-derived RNA panels to supplement current approaches for blood-based cancer screening

Reliability and validity of the Brief Illness Perception Questionnaire (B-IPQ) in individuals with a recently acquired spinal cord injury

Objective To assess the reliability and validity of the Brief Illness Perception Questionnaire (B-IPQ) and possible subscales, and to interpret Brief Illness Perception Questionnaire (B-IPQ) total scores, in individuals with a spinal cord injury. Design Cross-sectional Setting Seven Dutch rehabilitation centres Subjects Individuals with a recently acquired traumatic or non-traumatic spinal cord injury at the start of inpatient spinal cord injury rehabilitation (N = 270). Main measure The Brief Illness Perception Questionnaire (B-IPQ) consists of eight items on an individual's cognitive and emotional representation of one's health conditions. Principal component analysis was performed to identify possible Brief Illness Perception Questionnaire (B-IPQ) subscales. Validity was assessed by testing hypotheses on correlations between the Brief Illness Perception Questionnaire (B-IPQ) and other measures. Cut-off points of the Brief Illness Perception Questionnaire (B-IPQ) total score were determined. Results Mean (SD) age of participants was 60.1 (16.5) years, 188 (71%) were male, and 119 (44%) had tetraplegia. Three potential subscales were revealed. Cronbach's alpha was acceptable for only one subscale. This subscale was named 'consequences' and included the items 'consequences', 'symptom burden', 'concern', and 'emotions'. The Brief Illness Perception Questionnaire (B-IPQ) total and the consequence subscale showed the expected strong correlations (&gt;.50) with symptoms of anxiety and depression. Mean (SD) scores were 40.9 (12.3) on the 8-item Brief Illness Perception Questionnaire (B-IPQ) (range 0-80) and 25.1 (8.1) on the consequences subscale (range 0-40). Cut-off points for the Brief Illness Perception Questionnaire (B-IPQ) total score were determined as follows: = 50 indicating high experienced threat. Conclusion The Brief Illness Perception Questionnaire (B-IPQ) total and consequences subscale seem applicable in individuals with a spinal cord injury in the rehabilitation practice and research.</p

Illness perception of individuals with spinal cord injury (SCI) during inpatient rehabilitation:a longitudinal study

Study design: Multicentre longitudinal study. Objectives: To assess overall illness perception and specific illness representations at admission and discharge of inpatient spinal cord injury (SCI) rehabilitation, and to detect associations between demographic and injury-related variables, and illness perception. Setting: Seven Dutch SCI-specialised rehabilitation centres. Methods: Participants aged >18 years with a recent SCI were screened for cognitive and emotional illness representations at admission and discharge with the Brief Illness Perception Questionnaire (B-IPQ). Differences between B-IPQ item scores at admission and discharge were analysed with the Wilcoxon signed-rank test. Differences between B-IPQ total scores were analysed with the paired-samples t-test. Associations between B-IPQ total scores and other variables were tested with bivariable and multivariable regression analyses. Results: B-IPQ results were available for 270 participants at admission (71% male, 59% paraplegia, 83% incomplete) and 119 at discharge (68% male, 50% paraplegia, 78% incomplete). The extent to which people experienced their SCI as a threat was highest for: ‘consequences’, ‘symptom burden’ and ‘concern’ both at admission and discharge. Participants generally experienced less threat at discharge. A more threatening illness perception was significantly associated with older age, complete SCI and a history of cognitive problems at admission. Age and completeness of injury, together, explained 12% of the variance of overall illness perception at admission. Conclusions: For most individuals, illness perception positively changed during SCI rehabilitation. Measuring illness perception in inpatient rehabilitation could support the identification of specific treatment goals in order to improve adjustment after SCI

Measuring resilience with the Connor-Davidson Resilience Scale (CD-RISC): which version to choose?

Study design Cross-sectional psychometric study. Objectives To compare psychometric properties of the Connor-Davidson Resilience Scale (CD-RISC) with 25, 10, and 2 items, and to assess the agreement between these versions in individuals with spinal cord injury (SCI). Setting Standard psychological screening at a Dutch rehabilitation centre during the first 2 weeks of inpatient rehabilitation. Methods Anonymous data from the psychological screening were analysed. CD-RISC outcomes were checked for floor and ceiling effects. Internal consistency was assessed by calculating Cronbach's alpha. Convergent validity was assessed by Spearman's correlation between resilience and anxiety, depression, passive coping, and life satisfaction. Agreement between CD-RISC versions was examined by calculating intraclass correlation coefficients (ICCs), corresponding 95% confidence intervals (CIs), and Bland-Altman plots. Results Total CD-RISC scores were only skewed on the CD-RISC 2 (-1.12). There were no floor and ceiling effects. Internal consistency of the 25-, 10-, and 2-item scales was good to moderate (0.90, 0.86, and 0.66, respectively). Good convergent validity was shown only for the CD-RISC 10. Agreement was highest between the CD-RISC 25 and CD-RISC 10 with an ICC of 0.90 with 95% CI from 0.85 to 0.94. Conclusions Out of the three CD-RISC versions, the CD-RISC 10 showed the best combination of reliability, validity, and practicality. Therefore, this version is advised as measure of resilience in individuals with SCI in a rehabilitation setting. Measurement of resilience could be part of a psychological screening to identify individuals at risk to develop psychological problems after SCI

Echocardiographic right ventricular remodeling after percutaneous atrial septal defect closure

Background: In order to prevent right ventricular (RV) dysfunction, closure of secundum type atrial septal defects (ASD) is often indicated and percutaneous closure is the preferred treatment modality to do so. The magnitude and time course of RV remodeling is still incompletely understood. Methods: This retrospective cohort study included consecutive patients who underwent percutaneous secundum ASD closure in two tertiary referral centers in The Netherlands. Main study parameters were RV and right atrial dimensions measured with transthoracic echocardiography before and after percutaneous ASD closure. Secondary outcome was change in New York Heart Association (NYHA) functional class at follow-up. Results: From the 454 patients who underwent secundum ASD closure, 88 patients (median age 46 [range 17–84]) were included. The majority of RV and right atrial dimensional improvement occurred within 24 h. After a median follow-up of 569 days (IQR: 280–772) a further decrease in dimensions was observed. Comparing baseline and latest follow-up, end-diastolic RV basal diameter decreased from 4.5 SEM 0.1 to 3.9 SEM 0.1 cm (p < 0.001) and end-systolic right atrial area from 22.9 SEM 1.0 to 17.9 SEM 0.7 cm2 (p < 0.001). No significant changes in RV function were observed. NYHA functional class improved from 1.5 at baseline (IQR: 1.0–2.0) to 1.0 (IQR: 1.0–1.5) at latest follow-up (p < 0.001). Conclusion: Remodeling of the RV heart dimensions commences within 24 h after percutaneous secundum ASD closure for the majority of patients, followed by a further gradual recovery. A concurrent improvement of NYHA functional class was observed during follow-up

In Situ Electron Microscopy Study of Structural Transformations in 2D CoSe2

Thermally induced structural transformation of 2D materials opens unique avenues for generating other 2D materials by physical methods. Imaging these transitions in real time provides insight into synthesis routes and property tuning. We have used in situ transmission electron microscopy (TEM) to follow thermally induced structural transformations in layered CoSe2. Three transformation processes are observed: orthorhombic to cubic-CoSe2, cubic-CoSe2 to hexagonal-CoSe, and hexagonal to tetragonal-CoSe. In particular, the unit-cell-thick orthorhombic structure of CoSe2 transforms into cubic-CoSe2 via rearrangement of lattice atoms. Cubic-CoSe2 transforms to hexagonal-CoSe at elevated temperatures through the removal of chalcogen atoms. All nanosheets transform to basal-plane-oriented hexagonal 2D CoSe. Finally, the hexagonal to tetragonal transformation in CoSe is a rapid process wherein the layered morphology of hexagonal-CoSe is broken and islands of tetragonal-CoSe are formed. Our results provide nanoscopic insights into the transformation processes of 2D CoSe2 which can be used to generate these intriguing 2D materials and to tune their properties by modifying their structures for electro-catalytic and electronic applications