Two-thirds of adolescents who received active perinatal care after extremely preterm birth had mild or no disabilities.

AIM: Active perinatal care (APC) increases the survival of extremely preterm (EPT) infants, but may increase the rate of disabilities. We examined neurodevelopmental outcomes in adolescents aged 10-15 years who were born EPT and received APC in two Swedish tertiary care centres. METHODS: Cognitive function was assessed using the Wechsler Intelligence Scale for Children, and neurosensory impairments were assessed by reviewing the case records and a standard parent health questionnaire. The outcomes were compared to term-born controls. RESULTS: We assessed 132 EPT adolescents and 103 controls. The rates of cerebral palsy, moderate to severe visual impairment and moderate to severe hearing impairment were 9%, 4% and 6%, respectively, for the EPT children and zero for the controls. Serious cognitive impairment was present in 31% of the EPT adolescents and 5% of the controls. Combining impairments across domains showed that 34% of EPT adolescents had moderate and severe disabilities compared with 5% of the controls. Impairments were more common at 23-24 weeks of gestational age (43%) than at 25 weeks (28.4%). CONCLUSION: Two-thirds (66%) of adolescents born EPT who received APC had mild or no disabilities. Our results are relevant for healthcare providers and clinicians counselling families.

Executive Functioning and Learning Skills of Adolescent Children Born at Fewer than 26 Weeks of Gestation.

AIMS: To assess the cognitive and behavioral aspects of executive functioning (EF) and learning skills in extremely preterm (EPT) children compared with term control children aged 10 to 15 years. METHODS: A total of 132 of 134 (98% of all eligible survivors) EPT children born at the 2 Swedish regional tertiary care centers from 1992 to 1998 (mean age = 12 years, mean birth weight = 718 g, and mean gestational age = 24.4 weeks) and 103 matched term controls were assessed. General intelligence was assessed using the Wechsler Intelligence Scale for Children (WISC-III-R), and cognitive aspects of EF were analyzed using EF-sensitive subscales of the WISC-III-R and Tower test of the Delis-Kaplan Executive Function Scale (D-KEFS). Behaviors related to EF and learning skills were assessed using the Five to Fifteen questionnaire, which is a validated parent and teacher instrument. Academic performance in school was assessed by teachers' responses on Achenbach's Teachers Report Form. Analyses performed included multivariate analyses of covariance (ANCOVA and MANCOVA) and logistic regression analyses. RESULTS: The EPT children displayed significant deficits in cognitive aspects of EF compared with the controls, exhibiting decreases on the order of 0.9 SD to 1.2 SD for tasks of verbal conceptual reasoning, verbal and non-verbal working memory, processing speed and planning ability (P <0.001 for all). After excluding the children with major neurosensory impairment (NSI) or a Full Scale intelligence quotient (FSIQ) of < 70, significant differences were observed on all tests. Compared with controls, parents and teachers of EPT children reported significantly more EF-related behavioral problems. MANCOVA of teacher-reported learning skills in children with FSIQ >70 and without major NSI revealed no interactions, but significant main effects were observed for the behavioral composite executive function score, group status (EPT vs control) and FSIQ, for which all effect sizes were medium to large. The corresponding findings of MANCOVA of the parent-reported learning skills were very similar. According to the teachers' ratings, the EPT children were less well adjusted to the school environment. CONCLUSION: EPT children born in the 1990s who received active perinatal care are at an increased risk of executive dysfunction, even after excluding children with significant neurodevelopmental disabilities. Even mild to moderate executive dysfunctions has a significant impact on learning skills. These findings suggest the need for timely interventions that address specific cognitive vulnerabilities and executive dysfunctions.

Evaluation of the effects of a metabotropic glutamate receptor 5-antagonist on electrically induced pain and central sensitization in healthy human volunteers.

BACKGROUND: This study aimed to investigate the effect of a single dose of the mGluR5-antagonist AZD9272 on electrically induced pain, central sensitization and axon reflex flare. METHODS: This was a randomized, double-blind, placebo-controlled crossover study. Twenty-five healthy male volunteers received a single oral dose of AZD9272 or placebo on two occasions separated by 10-20 days. Electrical stimulation with a constant current for 100 min delivered through intracutaneous electrodes inserted on the forearm was used to induce a stable level of pain (6 of 10 on a 0-10 numerical rating scale; NRS). Pain intensity was assessed every 10 min during stimulation. The area of punctate hyperalgesia, area of dynamic mechanical allodynia, and area and intensity of flare reaction were measured every 20 min during stimulation. The stimulation procedure, current intensity and measurements were identical at both treatment visits. The AUC0-100 min (area under curve, 100 min stimulation) was calculated for each variable. The AUC0-100 min for pain NRS and hyperalgesia area were defined as primary variables. Linear mixed effects models were used for the statistical analysis. RESULTS: Twenty-one subjects completed the study per protocol. No significant differences were found between AZD9272 and placebo regarding any of the AUC0-100 min variables for pain NRS, hyperalgesia area, allodynia area, flare area or flare intensity. The plasma levels of AZD9272 were maximal during the pain measurements and corresponded to >50% brain mGluR5 receptor occupancy. CONCLUSION: Single doses of the centrally acting mGluR5-antagonist AZD9272 did not reduce C-fibre evoked pain, central sensitization or flare reaction.

Skin innervation at different depths correlates with small fibre function but not with pain in neuropathic pain patients.

BACKGROUND: Neuropathy can lead not only to impaired function but also to sensory sensitization. We aimed to link reduced skin nerve fibre density in different levels to layer-specific functional impairment in neuropathic pain patients and tried to identify pain-specific functional and structural markers. METHODS: In 12 healthy controls and 36 patients with neuropathic pain, we assessed clinical characteristics, thermal thresholds (quantitative sensory testing) and electrically induced pain and axon reflex erythema. At the most painful sites and at intra-individual control sites, skin biopsies were taken and innervation densities in the different skin layers were assessed. Moreover, neuronal calcitonin gene-related peptide staining was quantified. RESULTS: Perception of warm, cold and heat pain and nerve fibre density were reduced in the painful areas compared with the control sites and with healthy controls. Warm and cold detection thresholds correlated best with epidermal innervation density, whereas heat and cold pain thresholds and axon reflex flare correlated best with dermal innervation density. Clinical pain ratings correlated only with epidermal nerve fibre density (r = 0.38, p < 0.05) and better preserved cold detection thresholds (r = 0.39, p < 0.05), but not with other assessed functional and structural parameters. CONCLUSIONS: Thermal thresholds, axon reflex measurements and assessment of skin innervation density are valuable tools to characterize and quantify peripheral neuropathy and link neuronal function to different layers of the skin. The severity of small fibre neuropathy, however, did not correspond to clinical pain intensity and a specific parameter or pattern that would predict pain intensity in peripheral neuropathy could not be identified.

Cross-over evaluation of electrically induced pain and hyperalgesia.

Background Anewexperimental protocol of electrically induced pain and hyperalgesia was established to examine orally administered drugs. In a randomized, double-blind, placebo-controlled cross-over study this experimental protocol was used to assess the effects of paracetamol. Methods Twenty-four subjects were enrolled in this study. The magnitude of pain, axon reflex flare, and areas of pin-prick hyperalgesia and touch-evoked allodynia were assessed in two consecutive sessions; prior to, and 2 h after drug administration. This protocol was repeated after 1 week. Subjects were randomized to receive either paracetamol (2 g) or a placebo. Results In comparison to the placebo arm there were no significant effects of paracetamol on pain, hyperalgesia, allodynia, or axon reflex flare. Pain and flare responses were highly reproducible on the same day (r = 0.77 and r = 0.79, respectively), and after 1 week (r = 0.6 and r = 0.71, respectively). The correlation between areas of hyperalgesia and allodynia was, however, significantly improved when the protocol was repeated on the same day (r = 0.8 and r = 0.75), as opposed to after a week (r = 0.54 and r = 0.53). Discussion The electrical pain model is a well established method for the assessment of intravenously applied analgesics. In order to assess effects of orally applied drugs the model had to be modified: for the assessment of hyperalgesia and allodynia a protocol repeating the model within 1 day proved to have advantages over repetition after 1 week.

Family functioning and juvenile chronic physical illness in Northern Russia.

AIM: To study family functioning of adolescents with chronic physical illnesses and factors related to it. The following research questions were addressed: (i) if families with adolescents with chronic physical illnesses were at increased risk for problematic functioning compared to the healthy control families; (ii) was disease severity associated with family dysfunction; and (iii) did family functioning level differ in three disease groups (diabetes, asthma and epilepsy). METHODS: Self-report family inventory and socio-economic status questions were individually completed by 148 adolescents with physical illnesses aged 13-16 years and their mothers; medical data were obtained from the files at the outpatient clinics. Comparative data were collected from a group of 301 schoolchildren. RESULTS: Overall there were no differences found in functioning of families with physically ill adolescents compared to controls. Family functioning was significantly associated with the number of disease-specific (disease severity and duration) and non-disease (socio-economic status and family type) factors. CONCLUSION: In our study, families with physically ill adolescents showed considerable resilience and tolerance to the changes in habitual functioning of the family unit. While greater disease severity, longer disease duration, as well as single-parent household were the factors that contributed to the family dysfunction.

Mental health in adolescents with chronic physical illness versus controls in Northern Russia.

AIM: To study the behaviour/emotional problems and depression in adolescents with and without physical illnesses; to compare the same psychological parameters in adolescents with different disorders. METHODS: The sample consisted of 148 adolescents aged 13-16 years with one of the following physical chronic conditions: diabetes (n = 55), asthma (n = 59), or epilepsy (n = 59). Comparative data were obtained from a group of 301 schoolchildren. Test batteries (Child Behaviour Check-List, Youth Self Report, Beck Depression Inventory, socio-economic status questions) were individually completed by adolescents and their mothers. RESULTS: Overall adolescents with physical illness had more behaviour/emotional problems and were more depressed compared to controls although results varied according to the informants and the disease severity. Two risk groups were revealed: girls with asthma and boys with epilepsy. CONCLUSION: Our results suggest that mental health in adolescents with chronic physical illnesses is poorer than in controls and their mental health state is very much associated with the disease severity. The findings of the study can help to develop disease targeted and comprehensive interventions in outpatient clinics of Northern Russia in order to reduce behaviour and mood disorders in adolescents with chronic physical illnesses and therefore to smooth the transition through their teenage years.

Child behaviour after anaesthesia: association of socioeconomic factors and child behaviour checklist to the Post-Hospital Behaviour Questionnaire.

AIM: In the process of validation of the Swedish translation of the Post-Hospital Behaviour Questionnaire (PHBQ) to assess its relation to the Child Behaviour Checklist (CBCL) and to describe its relation to sociodemographic factors. METHOD: Three hundred and forty children 2-13 years studied in connection with elective procedures which included anaesthesia. Parents completed the CBCL forms before and after hospitalization as well as the PHBQ 2 weeks after hospitalization. RESULTS: In multivariate analysis of PHBQ total score independent risk factors were: age <5 (OR 2.4; CI 1.4-4.0), living in a one parent family (OR 4.4; CI: 1.6-12.6) and not living in a rural area (OR 1.6; CI: 1.0-2.6). The correlation between the total scores for PHBQ and CBCL for children aged 2-4 was moderate: (r = 0.38; p < 0.005). For children aged 4-7 there were significant correlations between PHBQ sleep anxiety and CBCL Other problems (r = 0.4; p < 0.01), PHBQ eating disturbances and CBCL total score (r = 0.3; p < 0.01), though none of these significant correlations were observed for children above 7 years of age. CONCLUSION: There is an association between PHBQ and CBCL which is weaker for older children. The reason for this might be that PHBQ is more sensitive in the younger age group and to minor changes in behaviour. Children younger than 5 years of age or living in a one parent family or not living in rural areas appear to have higher incidence of problematic behaviour in a 2 week follow up after anaesthesia.

Child behaviour after anaesthesia: associated risk factors.

AIM: To identify hospital care factors which are associated with problematic behaviours in children after hospitalization. METHOD: A cohort of 340 children ages 2-13 was studied in connection with elective procedures which included anaesthesia. DATA COLLECTED: sociodemographic, type of procedure, anaesthesia induction technique and premedication. Staff and parents assessed child anxiety at induction of anaesthesia, pain, anxiety and nausea in recovery room and hospital ward. Parents assessed their child's pain and nausea and the behaviour measured with the Post Hospital Behavioural Questionnaire two weeks after hospitalization. RESULTS: One-third (34.4 %) of the children developed at least one problematic behaviour, measured by the PHBQ subscales. Multiple logistic regression identified the following risk factors: age <5, pain at home but not at hospital, nausea, child anxiety at anaesthesia induction, postoperative nausea, postoperative distress, previous hospitalizations, living in a one adult family and having some previous problematic behaviours. Moderate-to-severe pain at home, but not at hospital, was associated with the greatest risk (OR 6.39 CI: 3.53-11.6). Previous anaesthesia, midazolam use in premedication and living in rural areas seemed to be protective factors. CONCLUSION: Pain at home but not in hospital is a strong risk factor for the onset or worsening of problematic behaviour after childhood hospitalization, which included anaesthesia. Proactive interventions are suggested to prevent this by improving pain treatment at home.

Self-reported competencies and problems among Swedish girls with eating disorders and a control sample, using the youth self-report.

OBJECTIVE: To study self-reported competencies and problems in adolescent girls with eating disorders, anorexia nervosa (AN), bulimia nervosa (BN), and eating disorder not otherwise specified (EDNOS) compared to matched normal controls. METHOD: The Youth Self-Report (YSR) was completed by 211 girls between 13 and 17 years of age with eating disorders and 211 controls matched for age, sex, and geographical area. RESULTS: Girls with eating disorders scored lower on all competence scales and higher on most problem 'scales compared to controls. Type of diagnosis had no effect on competence scales, but BN-patients scored higher than AN- and EDNOS-patients on many problem scales. AN-bingers/purgers reported more problems than restrictors on somatic complaints, delinquent behaviour, and the externalizing dimension. DISCUSSION: We conclude that the YSR gives important information concerning self-reported competencies and concomitant symptoms of general psychopathology in eating disordered adolescent girls.

Psychometric properties of Eating Disorder Inventory for Children (EDI-C) in Swedish girls with and without a known eating disorder.

OBJECTIVE: To evaluate the Swedish version of the Eating Disorder Inventory (EDI-C) for the internal consistency, factor structure and ability to discriminate between adolescent girls with and without a known eating disorder (ED). METHODS: Completely answered EDI-C questionnaires were available from 201 girls diagnosed with an ED and from 2073 schoolgirls. The girls were adolescents attending grade 7-12. RESULTS: Internal consistency was 0.70-0.91 for the ED group. Eleven factors with eigenvalue > 2.2 explained 56% of the variance and showed satisfying correspondence to the proposed constructs of EDI-C. A discriminant analysis classified 85.6% of the cases correctly. The three most important discriminating subscales were Drive for Thinness, Asceticism and Body Dissatisfaction. All subscales except Maturity Fears showed significantly higher mean values for the ED group. CONCLUSIONS: The results indicate that the psychometric properties of EDI-C are comparable to the properties of EDI-2. EDI-C should be preferred for adolescents since its statements suit this age group.

Self-reported competencies and problems among Swedish adolescents: a normative study of the YSR. Youth Self Report.

The aim of the study was to provide a standardisation of self-reported competencies and emotional/behavioural problems among Swedish adolescents, using the Youth Self-Report (YSR). The YSR was completed by 2522 adolescents aged 13-18 years, recruited from secondary and upper secondary schools in different regions in Sweden. The results showed that effects of gender and age were small but significant with girls scoring higher than boys on most problem scales, and 15- to 16-year-olds scoring higher than younger and older adolescents on the problem scales. Small effects were also found for residence as well as for parental SES. The correlations between internalising and externalising problems were 0.51 for boys and 0.49 for girls, whereas the correlation between competence and problem scores was low. We conclude that the individual variation in YSR-scores is much greater than can be attributed to factors such as gender, age, SES, or residential area. Consequently, the YSR has the potential to serve as an instrument for assessing individual adolescents' self-reported competencies and problems in Sweden. Given the almost orthogonal relation between self-reported competencies and problems, the competence scale is surprisingly little used in psychopathology research.

ADHD in Swedish 3- to 7-year-old children.

OBJECTIVE: To study characteristics of attention-deficit/hyperactivity disorder (ADHD) in a representative group of clinically impaired young children in Sweden with the disorder. METHOD: One hundred thirty-one children with ADHD (aged 3-7 years) were examined, and their parents were interviewed. Independent parent questionnaire data (Child Behavior Checklist, ADHD Rating Scale-IV, Conners) were collected. For comparison 131 children without ADHD were matched for age, gender, parents' marital status, child's adoption status, and social class. RESULTS: Children with ADHD had extremely high ADHD symptom levels--on average four to eight times higher than the comparison group. Sociodemographic correlates of ADHD symptoms were more pronounced in parent questionnaire data than in parent interview data, underscoring the importance of diagnostic interview when dealing with clinical issues. Very few of the children with ADHD (6%) appeared "normal" with regard to attention/activity level at clinical examination. CONCLUSIONS: Clinic children with a diagnosis of DSM-IV ADHD have typical and impairing symptoms already before starting school. The variance of ADHD in this age group appears to be accounted for by primary psychosocial factors only to a limited degree. It would seem reasonable to establish supportive and treatment measures for these young children so that the psychosocial and academic problems shown by so many individuals with ADHD later in their development might be reduced.

Stories of pre-war, war and exile: Bosnian refugee children in Sweden.

While standardized questionnaires produce counts of isolated events, a semi-structured interview derives a story, a complex narrative in time and place. Ninety Bosnian refugee children and adolescents (ages 1-20), resettled in Sweden, were assessed in a semi-structured clinical interview designed to identify and offer support to children at risk. A family-child account of traumatic exposure was analysed quantitatively and qualitatively. Type-stories or clusters of experience were identified for three distinct periods: prior to war, during war, and after war in exile. The extent of trauma-stress exposure during each of these periods proved unrelated. Pre-war experience presented as preponderantly good and safe. Differences in child exposure during war and exile could be understood in relation to identifiable socio-demographic factors; particularly ethnic background, social class, child age and family size. Further, the stories derived cast light on the equity of Swedish refugee reception, exposing both egalitarian and discriminatory tendencies.

Conduct problems in Russian adolescents: the role of personality and parental rearing.

The purpose of the present study was 1) to assess the predictive value of conduct problems prior to the age of 12 for the severity of antisocial behaviour during adolescence, and 2) to investigate the relationships between personality traits/parental rearing and childhood conduct problems/teenage antisocial behaviour. A group of 193 delinquents was assessed by means of the Antisocial Behavior Checklist (ABC), the Retrospective Childhood Problems (RETROPROB), the Temperament and Character Inventory (TCI) and the EMBU questionnaire on parental rearing. The extreme groups of delinquents as defined by childhood conduct problems, differed significantly on the experience of a rejecting father and a self-directed character. Furthermore, some specific predictive patterns for current antisocial behaviour by childhood conduct disorder and both personality dimensions and parental rearing factors emerged. The findings are discussed in the light of the interactive nature of relations between personality and parental rearing in the development of antisocial behaviour among adolescents.

Does maternal prenatal attachment predict postnatal mother-infant interaction?

The current study examined whether maternal prenatal attachment is associated with the mother-infant relationship. One hundred pregnant women and their infants at 12 weeks participated in the study. The sample was part of the Umeâ Child and Family Development project and was randomly recruited by midwives or health visitors. The expectant women completed a self-administered questionnaire, the PAI (the Prenatal Attachment Inventory) measuring prenatal attachment towards their unborn baby. At about 12 weeks postpartum, mothers and their infants were observed and videotaped during an en face interaction. The results revealed that maternal prenatal attachment towards the unborn baby is a good predictor of the early mother-infant relationship. Mothers who were high on the PAI-factor fantasy, for example, in general showed more involvement while interacting with their babies. Mothers rated highly on PAI-factors such as interaction and affection stimulated their infants by using more proximal stimulation, while those rated highly on differentiation of self with the unborn baby used more distal stimulation. Maternal responsive behaviour was only predicted by infant attentive behaviour. This study demonstrated that maternal prenatal attachment during the third trimester of pregnancy is associated with the postnatal maternal involvement, and can serve as an important diagnostic aid in identifying those women for whom the mother-child interaction is likely to be sub-optimal.

Coping styles and psychosomatic problems: are they related?

A number of recent studies have shown avoidant coping to be related with diverse types of somatic and mental pathology. In order to investigate the relevance of coping for both psychological and somatic problems in delinquent subjects, 185 boys from juvenile correction and 96 boys from secondary schools in Arkhangelsk, Northern Russia, were assessed by means of the Coping Scale for Children and Youth, the Youth Self-Report and the Giessen Subjective Complaints List - youth form. The results from the delinquent subjects partly confirmed previous findings on the dominant role of behavioural avoidance in the relationships between coping styles and both behavior/emotional problems and somatic complaints. Further implications of the results are discussed.

Psychological reaction by children of various ages to hospital care and invasive procedures.

Hospital care and treatment by invasive procedures produce significant psychological effects on children. Urogenital surgery deserves particular study. The developmental aspects of different ages are highly relevant. A proposed multidimensional model of contributing factors includes type of medical treatment, any previous surgery, the child's temperament, coping strategies of both child and parents and their psychological health, support from parents and staff, information and psychological preparation and age of the child. Up to now, there have been no clear recommendations as to the best age for elective surgical procedures in children according to psychological risk. In general, older children adapt better psychologically after hospital care. The literature, however, tends to advise elective surgery before 12 mo of age, based on apparent psychological adjustment in the very young after surgery and from a desire to shorten the period of living with the malformation/disorder. However, increased follow-up surgery from early interventions gives a higher risk of psychological problems. More well-controlled studies are needed before final evaluation of the impact of surgical interventions on psycho-social symptoms according to age group. In this analysis a multidimensional model is preferred.

Binding of [(3)H]lysergic acid diethylamide to serotonin 5-HT(2A) receptors and of [(3)H]paroxetine to serotonin uptake sites in platelets from healthy children, adolescents and adults.

Possible age effects on binding of [(3)H]lysergic acid diethylamide ([(3)H]LSD) to serotonin 5-HT(2A) receptors and of [(3)H]paroxetine to serotonin uptake sites were studied in platelets from healthy children (11-12 years of age), adolescents (16-17 years of age) and adults. Significant overall age effects were found both for the number of binding sites (B(max)) for [(3)H]LSD binding (p < 0.001), the affinity constant (K(d)) for [(3)H]LSD binding (p < 0.001), B(max) for [(3)H]paroxetine binding (p < 0.001) and K(d) for [(3)H] paroxetine binding (p = 0.006). In general, there was a decrease in B(max) with increasing age, which predominantly occurred between the ages 11-12 years and 16-17 years for the 5-HT(2A) receptor, and after 16-17 years of age for the serotonin uptake site. These developmental changes might have an impact on the effect of treatment with serotonergic drugs in children and adolescents. When the platelet serotonin variables investigated are employed in studies in children or adolescents, age matching or, alternatively, introduction of age control in the statistical analysis should be performed.