Development of a Nanofabricated Sensor for Monitoring Intraocular Pressure via Ocular Tissue Strain.

As the number of individuals developing glaucoma is increasing, researchers and ophthalmologists are exploring new approaches to monitor intraocular pressure, which is a critical measurement for glaucoma detection. Current monitoring methods, such as implantable pressure sensors and wearable contact lenses with sensors, are being explored in eye research clinics. However, these systems currently lack in providing 24 hours data through a practical platform for large-scale use. This paper presents a novel method that provides constant measurements of the scleral strain, which is correlated with the change of intraocular pressure, using a nanofabricated discrete resistor array implant sensor. A preliminary bench-top test was performed using the sensor, and it showed that the nanofabricated 1.6 mm by 2.7 mm resistor array exhibits discrete sensing levels at increments of 41 ohms as a fixture needle traversed approximately half of the array. Though the nanosensor is in the prototype developing stage, it promises a new modality for constant, remote, and around the clock glaucoma monitoring.

Common and unique associated factors for medically unexplained chronic widespread pain and chronic fatigue.

OBJECTIVE: Chronic widespread pain and chronic fatigue share common associated factors but these associations may be explained by the presence of concurrent depression and anxiety. METHODS: We mailed questionnaires to a randomly selected sample of people in the UK to identify participants with chronic widespread pain (ACR 1990 definition) and those with chronic fatigue. The questionnaire assessed sociodemographic factors, health status, healthcare use, childhood factors, adult attachment, and psychological stress including anxiety and depression. To identify persons with unexplained chronic widespread pain or unexplained chronic fatigue; we examined participant's medical records to exclude medical illness that might cause these symptoms. RESULTS: Of 1443 participants (58.0% response rate) medical records of 990 were examined. 9.4% (N=93) had unexplained chronic widespread pain and 12.6% (N=125) had unexplained chronic fatigue. Marital status, childhood psychological abuse, recent threatening experiences and other somatic symptoms were commonly associated with both widespread pain and fatigue. No common effect was found for few years of education and current medical illnesses (more strongly associated with chronic widespread pain) or recent illness in a close relative, neuroticism, depression and anxiety scores (more strongly associated with chronic fatigue). Putative associated factors with a common effect were associated with unexplained chronic widespread pain or unexplained chronic fatigue only when there was concurrent anxiety and/or depression. DISCUSSION: This study suggests that the associated factors for chronic widespread pain and chronic fatigue need to be studied in conjunction with concurrent depression/anxiety. Clinicians should be aware of the importance of concurrent anxiety or depression.

Multiple somatic symptoms predict impaired health status in functional somatic syndromes.

BACKGROUND: The relationship between functional somatic syndromes and multiple somatic symptoms is unclear. PURPOSE: We assessed whether the number of somatic symptoms is a predictor of health status in three functional somatic syndromes (FSS). METHODS: In a population-based study of 990 UK adults we assessed chronic widespread pain (CWP), chronic fatigue (CF) and irritable bowel syndrome (IBS) by questionnaire and medical record data. We assessed health status (Short Form 12 and EQ-5D), number of somatic symptoms (Somatic Symptom Inventory) and anxiety/depression (Hospital Anxiety and Depression Scale) both at baseline and at follow-up 1 year later. RESULTS: The proportion of people with an FSS who also have multiple somatic symptoms (52-55 %) was similar in the three functional syndromes. The presence of multiple somatic symptoms was associated with more impaired health status both at baseline and at follow-up. This finding was not explained by severity of FSS. In the absence of multiple somatic symptoms, the health status of the FSS was fair or good. In multiple regression analysis, the number of somatic symptoms, the presence of a functional syndrome (CWP or CF) and anxiety/depression were predictors of EQ-5D thermometer at follow-up after adjustment for confounders. CONCLUSIONS: Multiple somatic symptoms in people with an FSS are associated with impaired health status and this cannot be explained by more severe functional syndrome or the presence of anxiety and depression.

A prospective study of social difficulties, acculturation and persistent depression in Pakistani women living in the UK.

BACKGROUND: The reasons for the high prevalence of depressive disorders in women of Pakistani origin living in the UK are not clear. The aim of this study was to determine the relative importance of life events, chronic social difficulties and acculturation in a population-based sample of British Pakistani women. METHOD: A cross-sectional and prospective cohort study of 18- to 65-year-old Pakistani women in UK was carried out. The Schedule for Clinical Assessment in Neuropsychiatry for diagnosis, the Life Events and Difficulties Schedule for social stress and an acculturation questionnaire were used. RESULTS: Depressive disorder at baseline was associated with older age, social isolation and marked difficulties involving health and close relationships. Depressive disorder at follow-up was associated with severity of depression at baseline, difficulties in close relationships and two aspects of acculturation, especially less acculturation in relation to use of the English language. CONCLUSIONS: Lack of acculturation, especially less familiarity with the English language, is an independent predictor of persistence of depression in Pakistani women in UK. This needs to be taken into consideration when planning treatment, which also needs to address the personal difficulties associated with persistent depression. The implication of this work is that women of Pakistani origin with depression should be encouraged to receive help in the use of English as one part of treatment that may prevent relapse.

A prospective study of psychological distress among mothers of children admitted to a nutritional rehabilitation unit in Malawi.

OBJECTIVES: Accompanying guardians (usually the mother) have a pivotal role in promoting recovery from childhood severe acute malnutrition on Nutritional Rehabilitation Units (NRUs). We describe the prevalence of maternal distress at an NRU in Malawi and identify factors associated with this. We tested the hypothesis that maternal distress during admission would be associated with reduced child weight gain over the 4-week post-discharge period. METHODS: Maternal distress was measured using the Self Reporting Questionnaire (SRQ) administered to mothers of consecutive children during NRU admission. Repeat SRQ was administered to mothers attending a follow-up clinic 4 weeks post discharge. Maternal, child and psychosocial variables were also measured. Child weight change from discharge to follow-up was compared between children of mothers scoring SRQ ≥ 8 and those scoring SRQ < 8. FINDINGS: A total of 244 mothers and their children were recruited. In total, 71% of mothers scored SRQ ≥ 8 during admission. In all, 155 of 222 mothers eligible to complete repeat SRQ did so, and 33.5% scored SRQ ≥ 8. Maternal distress at recruitment was associated with older child age, no confiding relationship with spouse, having had a previous child die, and the child having diarrhoea. Maternal distress at follow-up was associated with older child age, the child having diarrhoea or fever since discharge, and the child being HIV sero-positive. Maternal distress during admission was not associated with child weight gain at 4-week post-discharge follow-up. CONCLUSION: Levels of maternal distress are very high during child admission to an NRU. Persistent distress is associated with child health factors including HIV. Nutritional rehabilitation programmes should pay increased attention to carer psychological wellbeing using targeted evidence-based interventions.

A randomised controlled trial of cognitive behaviour therapy and motivational interviewing for people with Type 1 diabetes mellitus with persistent sub-optimal glycaemic control: a Diabetes and Psychological Therapies (ADaPT) study.

OBJECTIVES: To determine whether (i) motivational enhancement therapy (MET) + cognitive behaviour therapy (CBT) compared with usual care, (ii) MET compared with usual care, (iii) or MET + CBT compared with MET was more effective in improving glycaemic control when delivered by general nurses with additional training in these techniques. DESIGN: A three-arm parallel randomised controlled trial as the gold standard design to test the effectiveness of psychological treatments. SETTING: The recruiting centres were diabetes clinics in seven acute trusts in south-east London and Greater Manchester. PARTICIPANTS: Adults (18-65 years) with a confirmed diagnosis of type 1 diabetes for a minimum duration of 2 years and a current glycated (or glycosylated) haemoglobin (HbA1c) value between 8.2% and 15.0%. INTERVENTIONS: The control arm consisted of usual diabetes care which varied between the hospitals, but constituted at least three monthly appointments to diabetes clinic. The two treatments arms consisted of usual care with MET and usual care with MET + CBT. MAIN OUTCOME MEASURES: The primary outcome was HbA1c at 12 months from randomisation. Secondary outcome measures were 1-year costs measured by the Client Service Receipt Inventory at baseline, 6 months and 12 months; quality of life-years [quality-adjusted life-years (QALYs)] measured by the SF-36 (Short Form-36 Health Survey Questionnaire) and EQ-5D (European Quality of Life-5 Dimensions) at baseline and 12 months. RESULTS: One thousand six hundred and fifty-nine people with type 1 diabetes were screened and 344 were randomised to MET + CBT (n = 106), MET (n = 117) and to usual care (n = 121). The 12-month follow-up rate for HbA1c was 88% (n = 305). The adjusted mean 12-month HbA1c was 0.45% lower in those treated with MET + CBT [95% confidence interval (CI) 0.16% to 0.79%, p = 0.008] than for usual care; 0.16% lower in those treated with MET (95% CI 0.20% to 0.51%, p = 0.38) than for usual care; and 0.30% lower with MET + CBT than with MET (95% CI -0.07% to 0.66%, p = 0.11). The higher the HbA1c, and the younger the participant at baseline, the greater was the reduction in HbA1c. The interventions had no effect on secondary outcomes such as depression and quality of life. The economic evaluation was inconclusive. Both interventions were associated with increased health care costs than for usual care alone. There was no significant difference in social costs. Cost effectiveness ratios, up to one year, varied considerably according to whether QALY estimates were based on EQ-5D or SF-36 and whether imputed or complete data were used in the analyses. CONCLUSIONS: A combination of MET and CBT may be useful for patients with persistent sub-optimal diabetic control. MET alone appears less effective than usual care. Economic evaluation was inconclusive. TRIAL REGISTRATION: Current Controlled Trials ISRCTN77044517.

The role of psychological distress and personality variables in the disablement process in rheumatoid arthritis.

OBJECTIVE: To test whether psychological distress and personality variables mediate or moderate physical health-related quality of life (HRQOL) in rheumatoid arthritis (RA) patients. METHODS: In 168 RA patients the following self-report instruments were administered: the Health Assessment Questionnaire (HAQ), the General Health Questionnaire (GHQ), the Defence Style Questionnaire (DSQ), the Hostility and Direction of Hostility Questionnaire (HDHQ), and the Sense of Coherence (SOC) scale. A total of 152 patients with several rheumatological disorders [56 with systemic sclerosis (SSc), 56 with systemic lupus erythematosus (SLE) and 40 with Sjögren's syndrome (SS)] served as disease controls. The outcome measure was the physical scale of the World Health Organization Quality of Life Instrument, Short Form (WHOQOL-BREF). We used hierarchical regression to determine whether our data were consistent with the disablement process model. RESULTS: In RA patients, sense of coherence was associated with physical HRQOL but the relationship was mediated by psychological distress. Self-sacrificing defence style moderated the relationship between pain and physical HRQOL: pain was associated with impaired physical HRQOL only in patients with predominant self-sacrificing defence style. Although psychological distress and personality variables were also associated with physical HRQOL in the disease control group, the moderating effects of personality on physical HRQOL were unique to RA. Thus, in RA, psychological distress, functional disability, and the interaction term between pain and self-sacrificing defence style were independently associated with physical HRQOL. CONCLUSIONS: In RA patients, psychological distress mediated the association of personality variables with physical HRQOL but personality moderated the effects of pain on physical HRQOL and this could be relevant to psychological interventions.

Can a brief psychological intervention prevent anxiety or depressive disorders in cancer patients? A randomised controlled trial.

BACKGROUND: We tested whether a brief psychological intervention could prevent anxiety or depressive disorders among newly diagnosed cancer patients. PATIENTS AND METHODS: Patients free of anxiety or depressive disorder were randomised to receive immediate intervention (start of cancer treatment), delayed intervention (8 weeks after starting treatment) or usual care. They were stratified according to risk of developing anxiety or depressive disorders. Primary outcome was measured using a standardised psychiatric interview to detect any anxiety or depressive disorder at 6 and 12 months following the cancer diagnosis. Analyses used conditional odds logistic regression models adjusting for age, gender, concerns and past history to compare outcome of all intervention patients with usual care. RESULTS: A total of 465 patients were recruited. In all, 313 (79%) of the 397 well enough to be interviewed completed the study. At 12 months, there was no difference between the groups receiving the intervention and usual care [odds ratio (OR) = 0.69, 95% confidence interval (CI) 0.41-1.17, P = 0.17]. In high-risk patients, those who received the intervention were less likely to develop an anxiety or depressive disorder compared with those who received usual care (OR = 0.54, 95% CI 0.29-1.00, P = 0.050). In low-risk patients, there was no difference (OR = 1.50, 95% CI 0.51-4.43, P = 0.47). CONCLUSION: A brief intervention, delivered by nonspecialists, promoted adjustment among newly diagnosed cancer patients at high risk of developing anxiety or depressive disorders.

A population-based study of irritable bowel syndrome in a non-Western population.

Previous studies have found no female predominance in irritable bowel syndrome (IBS) in non-Western countries. The aim of the study was to assess the prevalence and correlates of Rome II (IBS) in both sexes in Pakistan. A Population-based survey in a low-income inner city area using questionnaires to diagnose Rome II IBS and assess distress, disability and stressful life events. Data were collected from 880/938 (93%) randomly selected residents. 13.4% of women and 13.1% men met criteria for Rome II IBS; 34 (3.9%) had diarrhoea-predominant, 59 (6.7%) had constipation-predominant IBS and 24 (2.7%) had 'mixed IBS'. In logistic regression analysis, IBS was associated in men with high income (OR = 1.56; 95% CI: 1.05-2.3) and few years of education (OR = 2.17; 95% CI: 1.2-3.9) and in women with being married (OR = 3.6; 95% CI: 1.1-11.9) and stressful life events score (OR = 1.14; 95% CI: 1.01-1.3). Disability was associated with constipation-predominant IBS (OR = 1.99; 95% CI: 1.1-3.6), distress (OR = 1.19; 95% CI: 1.14-1.23) and stressful life events (OR = 1.19; 95% CI: 1.1-1.3). Investigations were more likely in men (54%) than in women (27%) (P = 0.003). These findings suggest that the equal sex ratio of IBS in urban Pakistan could result from a close association between marked distress and IBS in men similar to that found in women in western studies.

Predictors of violent victimization amongst those with psychosis.

OBJECTIVE: The aim of this study was to establish the prevalence and predictors of violent victimization amongst a community-dwelling sample of individuals with psychosis. METHOD: The 2-year prevalence of self-reported violent victimization was estimated for a sample of 708 individuals with chronic psychosis living in the community in four urban UK centres. Baseline socio-demographic and clinical factors were examined as possible risk factors for victimization over the 2-year follow-up period. RESULTS: The 2-year prevalence of violent victimization in the sample was 23%. Four factors were found to be independently predictive of victimization - history of victimization, less than daily family contact, young age at illness onset and the presence of co-morbid Cluster B personality disorder. CONCLUSION: Those with psychotic illnesses are at elevated risk of being assaulted. Given the likely adverse health implications, clinicians should routinely enquire about victimization in their assessments of those with psychotic disorders particularly amongst those who are socially isolated, with a younger age of illness onset and in those with co-morbid personality disorder.

Association between antenatal depression and low birthweight in a developing country.

OBJECTIVE: There is a high prevalence of depression in south Asian women. We aimed to examine the association between antenatal depression and low birthweight (LBW) in infants in a rural community in Rawalpindi, Pakistan. METHOD: A total of 143 physically healthy mothers with ICD-10 depression in the third trimester of pregnancy and 147 non-depressed mothers of similar gestation were followed from birth. Infant weight was measured and information collected on socioeconomic status, maternal body-mass index and sociodemographic factors. RESULTS: Infants of depressed mothers had lower birthweight (mean 2910 g) than infants of non-depressed mothers (mean 3022 g). The relative risk for LBW (< or =2500 g) in infants of depressed mothers was 1.9 (95% CI 1.3-2.9). The association remained significant after adjustment for confounders by multivariate analyses. CONCLUSION: Low birthweight is a major public health problem in developing countries. Maternal depression during pregnancy predicts LBW. Interventions aimed at maternal depression may help improve infant outcomes.

Guidelines on the irritable bowel syndrome: mechanisms and practical management.

BACKGROUND: IBS affects 5-11% of the population of most countries. Prevalence peaks in the third and fourth decades, with a female predominance. AIM: To provide a guide for the assessment and management of adult patients with irritable bowel syndrome. METHODS: Members of the Clinical Services Committee of The British Society of Gastroenterology were allocated particular areas to produce review documents. Literature searching included systematic searches using electronic databases such as Pubmed, EMBASE, MEDLINE, Web of Science, and Cochrane databases and extensive personal reference databases. RESULTS: Patients can usefully be classified by predominant bowel habit. Few investigations are needed except when diarrhoea is a prominent feature. Alarm features may warrant further investigation. Adverse psychological features and somatisation are often present. Ascertaining the patients' concerns and explaining symptoms in simple terms improves outcome. IBS is a heterogeneous condition with a range of treatments, each of which benefits a small proportion of patients. Treatment of associated anxiety and depression often improves bowel and other symptoms. Randomised placebo controlled trials show benefit as follows: cognitive behavioural therapy and psychodynamic interpersonal therapy improve coping; hypnotherapy benefits global symptoms in otherwise refractory patients; antispasmodics and tricyclic antidepressants improve pain; ispaghula improves pain and bowel habit; 5-HT(3) antagonists improve global symptoms, diarrhoea, and pain but may rarely cause unexplained colitis; 5-HT(4) agonists improve global symptoms, constipation, and bloating; selective serotonin reuptake inhibitors improve global symptoms. CONCLUSIONS: Better ways of identifying which patients will respond to specific treatments are urgently needed.

Life stress and depression in a tribal area of Pakistan.

BACKGROUND: Depression is common in Pakistan but no research on this subject has been reported from the North West Frontier Province (NWFP), host to numerous Afghan refugees. AIMS: To measure depressive symptoms and associated features in a population-based sample. METHOD: A Pushto translation of the Self Reporting Questionnaire (SRQ) was administered to 471 adults living in a village in one of the federally administered tribal areas. Respondents were also assessed with a life events checklist for social problems, a social support questionnaire and the Brief Disability Questionnaire. RESULTS: Sixty per cent (95/158) of women and 45% (140/313) of men scored 9 or more on the SRQ. High SRQ score was associated with few years of education, higher social problem score, less social support and greater disability. High social problem score was the strongest correlate. CONCLUSIONS: This population reports more depressive symptoms than other communities in Pakistan and this probably reflects the very high degree of social stress experienced in the NWFP, which has been affected by years of turmoilin neighbouring Afghanistan.

The validation of personal health questionnaire amongst people of Pakistani family origin living in the United Kingdom.

BACKGROUND: The Personal Health Questionnaire (PHQ) was developed to screen for depressive disorder in an English speaking population. Its validity in Urdu speaking people of Pakistani family origin living in UK is yet to be established. METHODS: The PHQ was used to screen for depression in a two phase primary care based study of depressive disorder in people of Pakistani family origin residing in Manchester, UK. A proportion of high scorers (PHQ> or =7) and a random selection of low scorers (PHQ 0-6) were interviewed with the Psychiatric Assessment Schedule (PAS) to confirm caseness (ID> or =5). A receiver operator characteristic curve (ROC) analysis was carried out to confirm the optimum threshold value. RESULTS: The PHQ was used to screen 218 subjects with cut off of PHQ> or =7. 46 high scorers and 31 low scorers were interviewed in second stage using PAS. At this threshold PHQ has a sensitivity of 70.4% and specificity of 89.3%. CONCLUSIONS: Findings of this study confirm high sensitivity and specificity of PHQ amongst people of Pakistani family origin. It can be used as a screening instrument to detect depression in Urdu speaking population in UK.

Maternal depression increases infant risk of diarrhoeal illness: --a cohort study.

AIMS: To examine the associations between postnatal depression in mothers and diarrhoeal illness in their infants in the first year of life in a low-income country. METHODS: Using a prospective cohort design, 265 infants (n = 130 of mothers having a depressive episode according to the International Classification of Diseases, 10th revision, at 3 months postnatal and n = 135 of psychologically well mothers) living in rural Rawalpindi, Pakistan, were followed up for 1 year. Frequency of diarrhoeal episodes was measured fortnightly by health workers using a standard questionnaire. RESULTS: Infants of depressed mothers had significantly more diarrhoeal episodes per year than those of controls (mean 5.5 v 4.0; 95% confidence interval (CI) 0.9 to 2.0). The relative risk of having > or =5 diarrhoeal episodes per year in infants of depressed mothers was 2.3 (95% CI 1.6 to 3.1). The association remained significant after adjustment for other risk factors by multivariate analysis. CONCLUSIONS: Maternal depression is associated with infant diarrhoeal morbidity in a low-income community setting. It is independent of the effects of known factors such as undernutrition, socioeconomic status and parental education. Preventive child health programmes targeting mothers must consider their mental health.

Contribution of depression and anxiety to impaired health-related quality of life following first myocardial infarction.

BACKGROUND: The extent to which depression impairs health-related quality of life (HRQoL) in the physically ill has not been clearly established. AIMS: To quantify the adverse influence of depression and anxiety, assessed at the time of first myocardial infarction and 6 months later, on the physical aspect of HRQoL 12 months after the infarction. METHOD: In all, 260 in-patients, admitted following first myocardial infarction, completed the Hospital Anxiety and Depression Scale and the Medical Outcomes Study SF-36 assessment before discharge and at 6- and 12-month follow-up. RESULTS: Depression and anxiety 6 months after myocardial infarction predicted subsequent impairment in the physical aspects of HRQoL (attributable adjusted R(2)=9%, P<0.0005). These negative effects of depression and anxiety on outcome were mediated by feelings of fatigue. Depression and anxiety present before myocardial infarction did not predict HRQoL 12 months after myocardial infarction. CONCLUSIONS: Detection and treatment of depression and anxiety following myocardial infarction improve the patient's health-related quality of life.

Do care patterns change over time in a newly established mental health service? A report from the UK700 trial.

PURPOSE: Data on the process of mental health care is scant. Most studies focus on services at their inception when activity may be atypical and then usually present data only mean values for the reported variables over the whole study period. We aimed to test whether care delivery changes over time, and to describe any changes at the individual patient and team levels. METHODS: Process data on 272 patients in three new intensive case management (ICM) teams were collected over 2 years. Interventions were prospectively recorded using clinician-derived categories. Changes over time are described at both patient and team level. RESULTS: The number of contacts and the proportion of face-to-face activity were remarkably constant after the first month at the patient level. The proportion of 'psychiatric' interventions (main focus on medication or a specific 'mental health' intervention performed) increased greatly after the first 6 months. The care activity received by individual patients varied considerably. Overall, teams varied significantly in the extent to which their activity rates were sustained over time. CONCLUSIONS: New ICM teams deliver highly individualised care with more marked differences in treatment patterns between patients in the same team than mean differences between teams. The early 'engagement' period is marked by a greater focus on social care. There is evidence of differences in sustainability of the services by site.

The risk factors for depression in first myocardial infarction patients.

BACKGROUND: Depression affects outcome following myocardial infarction but the risk factors for such depression have been little studied. This study considered whether the causes of depression occurring before and after myocardial infarction were similar to those of depression in the general population. METHOD: Consecutive patients admitted to hospital following their first myocardial infarction were interviewed with the Schedule for Clinical Assessment in Neuropsychiatry to detect psychiatric disorders and the Life Events and Difficulties Schedule to assess recent stress. Participants completed the Hospital Anxiety and Depression Scale (HADS) at entry to the study and 1 year later and the risk factors associated with a high score at both times were assessed. RESULTS: Of 314 (88% of eligible) patients who were recruited, 199 (63%) were male and 63 (20%) had depressive disorders. Logistic regression identified the following as independently associated with depressive disorder that had been present for at least I month before the myocardial infarction: younger age, female sex, past psychiatric history, social isolation, having marked non-health difficulties and lack of a close confidant. At follow-up 269/298 (90%) responded; of 189 participants not depressed at first assessment, 39 (21%) became depressed by the 1 year follow-up. Logistic regression identified frequent angina as the only significant predictor of raised HADS scores at 12 months. CONCLUSIONS: Depression developing during the year following myocardial infarction does not have the same risk factors as that which precedes myocardial infarction. Further clarification of the mechanisms linking depression to poor outcome may require separation consideration of pre- and post-myocardial infarction depression, and its risk factors.