The delusive benefit of the doubt

Science promises benefits, some true and some illusory. Consider a scientific agnostic who thinks that to reap the true benefits of a scientific theory he does not have to believe in its theoretical posits. Instead, it is enough if he believes that the theory successfully predicts the behavior of the observables, as ultimately only such predictions matter. Say, however, that given the results of her thorough research, a psychologist proposes a theory describing a psychological mechanism underlying a certain class of normative judgments. Moreover, the mechanism seems unfit for the task-once you see the details of the mechanism, you will realize that this is not the way they should be produced. Therefore, if the psychologist is right, it seems that these normative judgments should not inform one's normative theorizing or one's actions (Greene, 2008; Greene, 2014; Kelly, 2014). And say that the agnostic accepts the psychologist's theory, trusting that it makes correct predictions about, for example, fMRI images and subjects' reaction times, as they are observable. He also thinks that if the psychologist's description of the mechanism is correct, the judgments should not be trusted. Yet, since the mechanism posited by the theory is not observable, the agnostic is agnostic about it. He thus cannot be convinced that these judgments are produced in a flawed way and, consequently, has no reason to distrust them. Scientific agnosticism comes, therefore, at the cost of dismissing normative arguments that invoke unobservable posits of psychological models. The ability to make such arguments is a true (rather than illusory) benefit of science, despite the agnostic's promise that his philosophical theory leaves intact benefits that genuinely matter.

Current Understanding of an Emerging Role of HLA-DRB1 Gene in Rheumatoid Arthritis-From Research to Clinical Practice

Rheumatoid arthritis (RA) is an autoimmune disease with an unclear pathogenic mechanism. However, it has been proven that the key underlying risk factor is a genetic predisposition. Association studies of the HLA-DRB1 gene clearly indicate its importance in RA morbidity. This review presents the current state of knowledge on the impact of HLA-DRB1 gene, functioning both as a component of the patient’s genome and as an environmental risk factor. The impact of known HLA-DRB1 risk variants on the specific structure of the polymorphic HLA-DR molecule, and epitope binding affinity, is presented. The issues of the potential influence of HLA-DRB1 on the occurrence of non-articular disease manifestations and response to treatment are also discussed. A deeper understanding of the role of the HLA-DRB1 gene is essential to explore the complex nature of RA, which is a result of multiple contributing factors, including genetic, epigenetic and environmental factors. It also creates new opportunities to develop modern and personalized forms of therapy.

Reduced periprocedural mortality and bleeding rates of radial approach in ST-segment elevation myocardial infarction. Propensity score analysis of data from the ORPKI Polish National Registry

AIMS

We sought to evaluate bleeding complications and periprocedural outcomes of the radial approach (RA) as compared to the femoral approach (FA) during percutaneous coronary intervention (PCI) in "real-world" patients with ST-segment elevation myocardial infarction (STEMI).

METHODS AND RESULTS

The study group consisted of 22,812 consecutive patients with STEMI treated with PCI and stent implantation between January 2014 and June 2015 in 151 tertiary invasive cardiology centres in Poland (the ORPKI Polish National Registry). Patients treated using the RA and FA were compared using a propensity score analysis to avoid possible selection bias. The analysis was carried out in an "as-treated" manner. The FA was used in 9,334 (40.9%) and the RA in 13,478 (59.1%) patients. After propensity score matching, a higher total amount of contrast (191.8±8.0 vs. 174.8±68.8 ml; p=0.001) and lower radiation doses (1,279.5±1,346.3 vs. 1,182.6±887 mGy; p=0.02) were reported in FA. More access-site-related bleeding complications after both angiography (0.17% vs. 0.02%; p=0.004) and PCI (0.23% vs. 0.09%; p=0.049) were reported in the FA group. Periprocedural death (1.94% vs. 0.93%; p=0.001) was more common after PCI performed with the FA.

CONCLUSIONS

The radial approach was associated with a lower incidence of periprocedural death in STEMI patients as well as a significant reduction of bleeding complications at the access site.

Moral Objectivism in Cross-Cultural Perspective

Moral psychologists have recently turned their attention to the study of folk metaethical beliefs. We report the results of a cross-cultural study using Chinese, Polish and Ecuadorian participants that seeks to advance this line of investigation. Individuals in all three demographic groups were observed to attribute objectivity to ethical statements in very similar patterns. Differences in participants’ strength of opinion about an issue, the level of societal agreement or disagreement about an issue, and participants’ age were found to significantly affect their inclination to view the truth of an ethical statement as a matter of objective fact. Implications for theorizing about folk morality are discussed.

Flexible Lifestyles for Youth (FL3X) behavioural intervention for at-risk adolescents with Type 1 diabetes: a randomized pilot and feasibility trial

AIM

To determine the potential effect sizes for the Flexible Lifestyle for Youth (FL3X) behavioural intervention to improve glycaemic control (HbA(1c)) and quality of life for at-risk adolescents with Type 1 diabetes.

METHODS

Participants [n = 61; age 12-16 years, HbA(1c) 64-119 mmol/mol (8-13%)] were randomized to FL3X (minimum three sessions) or usual care. Effect sizes (Cohen's d), comparing the mean difference between the groups, were calculated.

RESULTS

Study retention (95%), attendance at intervention sessions (87% attended all three sessions) and acceptability were high (100% of the adolescents and 91% of parents would recommend the programme to others). Overall, 41% of participants in the intervention group and 24% of participants in the control group were 'responders' [HbA(1c) decreased by > 6 mmol/mol (0.5%); d = 0.37]. HbA(1c) levels decreased (d = -0.18), diabetes-specific quality of life increased (d = 0.29), but generic quality of life decreased (d = -0.23) in the intervention compared with the control group.

CONCLUSIONS

The FL3X programme merits further study for improving HbA(1c) and diabetes-specific quality of life in adolescents with Type 1 diabetes. (Clinical trials registry no.: NCT01286350).

Psychosocial aspects of closed- and open-loop insulin delivery: closing the loop in adults with Type 1 diabetes in the home setting

AIMS

To explore the psychosocial experiences of closed-loop technology and to compare ratings of closed- and open-loop technology for adults with Type 1 diabetes taking part in a randomized crossover study.

METHODS

Adults (aged > 18 years) on insulin pump therapy were recruited to receive a first phase of either real-time continuous glucose monitoring with overnight closed-loop or real-time continuous glucose monitoring alone (open-loop) followed by a second phase of the alternative treatment in random order, at home for 4 weeks, unsupervised. Participants were invited to share their views in semi-structured interviews. The impact of the closed-loop technology, positive and negative aspects of living with the device overnight, along with the hopes and anxieties of the participants, were explored.

RESULTS

The participants in the trial were 24 adults with a mean (sd) age of 43 (12) years, of whom 54% were men. The mean (range) interview duration was 26 (12-46) min. Content and thematic analysis showed the following key positive themes: improved blood glucose control (n = 16); reassurance/reduced worry (n = 16); improved overnight control leading to improved daily functioning and diabetes control (n = 16); and improved sleep (n = 8). The key negative themes were: technical difficulties (n = 24); intrusiveness of alarms (n = 13); and size of equipment (n = 7). Of the 24 participant, 20 would recommend the closed-loop technology.

CONCLUSIONS

Closed-loop therapy has positive effects when it works in freeing participants from the demands of self-management. The downside was technical difficulties, particularly concerning the pump and 'connectivity', which it is hoped will improve. Future research should continue to explore the acceptability of the closed-loop system as a realistic therapy option, taking account of user concerns as new systems are designed. Failure to do this may reduce the eventual utility of new systems.

Comparison of longitudinal point-of-care and high-performance liquid chromatography HbA1c measurements in a multi-centre trial

AIMS

Point-of-care HbA(1c) is routine in clinical practice. Comparison of point-of-care HbA(1c) against laboratory measurements across sites and over time is warranted.

METHODS

One hundred and twenty-one young persons with Type 1 diabetes from four centres provided 450 paired samples collected over 10 months for point-of-care HbA(1c) and central laboratory-based high-performance liquid chromatography (HPLC) HbA(1c) determinations. Change in HbA(1c) over time was assessed by difference from initial to final HbA(1c) and by growth modelling with annualized slope calculation. Change in HbA(1c) was categorized as improved (decrease of ≥ 0.5% or negative slope), no change (± 0.4% of initial HbA(1c) or slope = 0) or worsened (increase of ≥ 0.5% or positive slope).

RESULTS

The 450 paired samples (median of four pairs/patient) were highly correlated (r = 0.97, P < 0.0001), as were time-specific and site-specific pairs (r = 0.94 to 0.98, P < 0.0001). Initial-to-final point-of-care HbA(1c) and HPLC HbA(1c) changes were 0.3 ± 1.1% (range -2.7 to 4.1) and 0.4 ± 1.2% (-3.9 to 4.5), respectively, with 21% of patients (n = 26) discordant for change categories. ΔHbA(1c) by point-of-care HbA(1c) vs. HPLC HbA(1c) differed across the HbA(1c) range and by ≥ 0.5% absolute difference in ΔHbA(1c) in 14 (54%) of the 26 patients discordant for HbA(1c) change categories. Mean annual HbA(1c) slope was 0.4 ± 1.5% (-5.4 to 4.8) for point-of-care HbA(1c) and 0.4 ± 1.6% (-6.9 to 5.2) for HPLC HbA(1c), with 18% (n = 22 pairs) discordant for change categories.

CONCLUSIONS

Assessment of absolute HbA(1c) change may not be different for point-of-care HbA(1c) compared with HPLC HbA(1c); however, misclassification of patients by discrete cut-off values may occur with point-of-care HbA(1c) compared with HPLC HbA(1c) determinations.

Validation of an abbreviated adherence measure for young people with Type 1 diabetes

AIMS

Adherence to diabetes-related tasks is an important construct. The Diabetes Self-Management Profile is a validated, semi-structured interview assessing adherence in paediatric patients with Type 1 diabetes. We created and validated a brief questionnaire version of the Diabetes Self-Management Profile called the Diabetes Self-Management Questionnaire.

METHODS

Young people with Type 1 diabetes, ages 9-15 years (n = 338) and their parents provided data from chart review, interview and questionnaires.

RESULTS

Diabetes Self-Management Questionnaire scores correlated significantly with Diabetes Self-Management Profile scores, HbA(1c) , blood glucose monitoring frequency and other measures associated with adherence and/or glycaemic control (P ≤ 0.01 for all). Young people and parent scores were correlated (r = 0.55, P < 0.0001). The Diabetes Self-Management Questionnaire demonstrated modest internal consistency (Cronbach's α = 0.59), adequate for a brief measure of multidimensional adherence. In addition, factor analysis confirmed one factor.

CONCLUSIONS

This brief adherence questionnaire demonstrated construct validity in young people 9-15 years old and their parents and may have utility in clinical and research settings.

Satisfaction with continuous glucose monitoring in adults and youths with Type 1 diabetes

AIMS

To describe satisfaction with continuous glucose monitoring in Type 1 diabetes; to correlate continuous glucose monitoring satisfaction scores with usage; and to identify common themes in perceived benefits and barriers of monitoring reported by adults, youths and the parents of youths in the Juvenile Diabetes Research Foundation continuous glucose monitoring trials.

METHODS

The Continuous Glucose Monitoring Satisfaction Scale questionnaire was completed after 6 months of monitoring. Participants also answered open-ended queries of positive and negative attributes of continuous glucose monitoring.

RESULTS

More frequent monitoring was associated with higher satisfaction for adults (n = 224), youths (n = 208) and parents of youths (n = 192) (all P < 0.001) in both the 'benefits' and 'hassles' sub-scales of the Continuous Glucose Monitoring Satisfaction Scale, but the greatest differences between the two groups involved scores on hassle items. Common barriers to monitoring use included insertion pain, system alarms and body issues; while common benefits included glucose trend data, opportunities to self-correct out-of-range glucose levels and to detect hypoglycaemia.

CONCLUSIONS

As frequent use of continuous glucose monitoring is associated with improved glycaemic control without increased hypoglycaemia it is important to overcome barriers, reinforce benefits and set realistic expectations for this technology in order to promote its more consistent and frequent use in individuals with Type 1 diabetes.

[Mechanisms of cancer angiogenesis]

The early stages of tumor growth are independent of blood vessels. When a tumor reaches a volume of approximately 2 mm3, it requires an oxygen and nutrient supply, like other tissues. Satisfaction of the metabolic demands of tumor tissue occurs through neovascularization, which is also called tumor angiogenesis. The best-characterized mechanism of new vessel formation is endothelial cell sprouting. This three-step process involves dilation of a preexisting vessel and basement membrane degradation as well as endothelial cell proliferation and migration, which lead to the restoration of vessel continuity. Eventually, a new vascular basement membrane is deposited and proliferating pericytes are recruited to stabilize the newly formed vessels. Other examples of tumor neovascularization are intussusceptive and glomerular angiogenesis. Since endothelial cell recruitment, proliferation, and migration is not required, they proceed faster and at lower energetic costs. These types of angiogenesis predominate in the colon, stomach, thymus, and skin cancers as well as gliosarcomas mulitiforme. Moreover, tumors can also be fed by co-opting host vessels or by forming "pseudovessels" in angiogenesis mimicry. All the processes mentioned in this review are not mutually exclusive; on the contrary, they are closely connected in many cases.Therefore, effective anticancer therapies should not only focus on diminishing the activity of proangiogenic factors targeted during vessel sprouting, but include the great variety of vessel factors.

Quality of life in children with Type 1 diabetes: a comparison of general and diabetes-specific measures and support for a unitary diabetes quality-of-life construct

AIMS

To assess the factor structure of the Pediatric Quality of Life Inventory (PedsQL) Diabetes Module and to compare the PedsQL general and diabetes-specific quality of life (QOL) measures regarding psychometric properties and relations to relevant outcomes.

METHODS

The instruments were completed by 447 children age 9 to 15.5 years with Type 1 diabetes > 1 year from four US paediatric diabetes clinics; parents completed the parallel parent-proxy measures. Principal components factor analysis was used to examine the factor structure of the PedsQL diabetes module. Analyses of the generic and diabetes QOL measures included psychometric properties, parent-child correlations and correlations with depression, adherence and glycated haemoglobin (HbA(1c)).

RESULTS

The factor structure of the PedsQL diabetes module did not support the original five subscales. Both one- and two-factor models were supported; however, parallel parent and child subscales did not emerge. While the generic and diabetes-specific measures of QOL were moderately to highly correlated with each other, the constructs were differentially associated with relevant diabetes outcomes. Generic QOL was more highly associated with depression than diabetes QOL. Conversely, diabetes QOL was more highly associated with adherence and HbA(1c), although this was seen to a greater extent for parent-proxy report than for child report.

CONCLUSIONS

Factor analysis of the PedsQL diabetes module supports the use of a total diabetes QOL score. Findings regarding the associations of the generic and diabetes modules with diabetes outcomes underscore the unique contribution provided by both generic and diabetes QOL.

[Atelocollagen as a potential carrier of therapeutics]

Collagen is a very abundant protein that makes up about 25% of the total protein in animal organisms. Of the 28 types of collagen described so far, type I is the most common. Applying collagen in medical treatment is dangerous and may be harmful to patients due to its high immunoreactivity and the risk of contamination with viruses or prions. The immunogenicity of collagen I can be significantly reduced by digestion with pepsin, resulting in the release of telopeptides containing mostly antigenic epitopes. The major product of the digestion is called atelocollagen, which was used for the first time in tissue engineering already in the 1970s. Recent data indicate that due to its rare properties, such as low immunogenicity, liquid state at 4 degrees C, and solid state at 37 degrees C as well as its strong positive charge (pI 9), it may be used as a carrier of negatively charged proteins and nucleic acids. In addition, such complexes of atecollagen/therapeutics are easy to obtain and, depending upon the concentration of atelocollagen, they may be used to provide therapeutics to the organism locally or in a systemic manner. In this review the practical application of atelocollagen used as a carrier of proteins and nucleic acids (plasmids, antisense oligodeoxynucleotides, and siRNA) to treat inherited diseases and cancers is critically discussed. The observations described indicate that it is an optimal vehicle to transport medication which may be used in vivo with very limited risk. Therefore, atelocollagen has the potential to contribute significantly to the further development of gene therapy.

An association between vascular endothelial growth factor gene promoter polymorphisms and diabetic retinopathy

BACKGROUND

Diabetic retinopathy is a highly prevalent cause of visual loss in Western countries. Vascular endothelial growth factor (VEGF) is a potent angiogenic factor implicated in the development of the proliferative stage of this disease. Reports have suggested that polymorphisms at positions -460 and -634 of the 5' untranslated region of the VEGF gene increase its basal promoter activity.

METHODS

To investigate whether polymorphisms are associated with diabetic retinopathy, 215 patients with type 2 diabetes mellitus (T2DM) were enrolled. Among them, 82 subjects had proliferative diabetic retinopathy (PDR), 72 had non-proliferative diabetic retinopathy (NPDR), and 61 individuals without retinopathy served as controls. Two polymorphisms of the VEGF gene, a G-->C transversion at -634 (the G/C polymorphism) and a C-->T transition at -460 (the C/T polymorphism), were investigated by restriction fragment length polymorphism PCR and allele-specific PCR respectively.

RESULTS

We did not find any association between the C/T polymorphism and diabetic retinopathy. However, the G/C polymorphism genotype distribution and the frequency of the C allele were significantly higher in the NPDR group than in control patients (OR = 1.69, 95% CI = 1.03-2.79). Analysis of the distribution of combined genotypes of the VEGF gene revealed the prevalence of the C/C-C/C genotype in NPDR patients (OR = 8.26, 95% CI = 1.79-37.99) and C/G-CC in PDR patients (OR = 3.36, 95% CI = 1.39-8.12).

CONCLUSIONS

Occurrence of the -634C allele appears to be associated with increased VEGF gene promoter activity, and the G/C polymorphism might serve as a predictive factor for the development of diabetic retinopathy.

Comparative study of DNA damage, cell cycle and apoptosis in human K562 and CCRF-CEM leukemia cells: role of BCR/ABL in therapeutic resistance

The Philadelphia translocation t(9;22) resulting in the bcr/abl fusion gene is the pathogenic principle of almost 95% of human chronic myelogenous leukemia (CML). Imatinib mesylate (STI571) is a specific inhibitor of the BCR/ABL fusion tyrosine kinase that exhibits potent antileukemic effects in CML. BCR/ABL-positive K562 and -negative CCRF-CEM human leukemia cells were investigated. MTT survival assay and clonogenic test of the cell proliferation ability were used to estimate resistance against idarubicin. DNA damage after cell treatment with the drug at the concentrations from 0.001 to 3 microM with or without STI571 pre-treatment were examined by the alkaline comet assay. We found that the level of DNA damages was lower in K562 cells after STI571 pre-treatment. It is suggested that BCR/ABL activity may promote genomic instability, moreover K562 cells were found to be resistant to the drug treatment. Further, we provided evidence of apoptosis inhibition in BCR/ABL-positive cells using caspase-3 activity colorimetric assay and DAPI nuclear staining for chromatin condensation. We suggest that these processes associated with cell cycle arrest in G2/M checkpoint detected in K562 BCR/ABL-positive compared to CCRF-CEM cells without BCR/ABL expression might promote clone selection resistance to drug treatment.

Psychosocial therapies in diabetes: report of the Psychosocial Therapies Working Group

OBJECTIVE

To review key advances in the behavioral science literature related to psychosocial issues and therapies for persons with diabetes, to discuss barriers to research progress, and to make recommendations for future research.

RESEARCH DESIGN AND METHODS

Key findings from the literature on psychosocial research in diabetes are reviewed separately for children and adults. Specific issues covered include psychosocial adjustment and psychiatric disorders, neurocognitive functioning, quality of life, and psychosocial therapies. Barriers that must be addressed to allow research in this area to progress are discussed. Recommendations are then made concerning high-priority areas for advancing research in the field.

CONCLUSIONS

A substantial amount of behavioral science research has demonstrated that psychosocial factors play an integral role in the management of diabetes in both children and adults. Research has also shown the efficacy of a number of psychosocial therapies that can improve regimen adherence, glycemic control, psychosocial functioning, and quality of life. More research in this area is needed to develop psychosocial intervention programs for specific patient populations and to demonstrate the cost-effectiveness of these approaches.

Behavior therapy for families of adolescents with diabetes: maintenance of treatment effects

OBJECTIVE

This study reports 6- and 12-month follow-up for the families of adolescents with diabetes who participated in a trial of Behavioral-Family Systems Therapy (BFST).

RESEARCH DESIGN AND METHODS

A total of 119 families of adolescents with type 1 diabetes were randomized to 3 months of treatment with either BFST, an education and support (ES) group, or current therapy (CT). Family relationships, adjustment to diabetes, treatment adherence, and diabetic control were assessed at baseline, after 3 months of treatment, and 6 and 12 months later. This report focuses on the latter two evaluations.

RESULTS

Compared with CT and ES, BFST yielded lasting improvements in parent-adolescent relationships and diabetes-specific conflict. Delayed effects on treatment adherence emerged at 6- and 12-month follow-ups. There were no immediate or delayed effects on adolescents' adjustment to diabetes or diabetic control.

CONCLUSIONS

BFST yielded lasting improvement in parent-adolescent relationships and delayed improvement in treatment adherence, but it had no effect on adjustment to diabetes or diabetic control. A variety of adaptations to BFST could enhance its impact on diabetes outcomes.

Validation of a structured interview for the assessment of diabetes self-management

OBJECTIVE

The authors developed and validated a semi-structured interview; the Diabetes Self-Management Profile (DSMP), to measure self-management of type 1 diabetes. The DSMP includes the following regimen components: exercise, management of hypoglycemia, diet, blood glucose testing, and insulin administration and dose adjustment.

RESEARCH DESIGN AND METHODS

Families of youths with type 1 diabetes (n = 105) who were entering a controlled trial of intensive therapy (IT) versus usual care (UC) were administered the DSMP Analyses assessed the reliability and validity of the DSMP, including its associations with HbA1c and quality of life.

RESULTS

The DSMP total score has adequate internal consistency (Cronbach's alpha 0.76), 3-month test-retest reliability (Pearson correlation, r = 0.67), inter-interviewer agreement (r = 0.94), and parent-adolescent agreement (r = 0.61). DSMP total scores (r = -0.28) and 3 subscales correlated significantly with HbA1c (diet [r = -0.27], blood glucose testing [r = -0.37], and insulin administration and dose adjustment [r = -0.25 ]). Adolescents' reports of self-management did not differ from parental reports. Higher DSMP scores were associated with more favorable quality of life for mothers and youths.

CONCLUSIONS

The DSMP is a convenient measure that yields a reliable and valid assessment of diabetes self-management. Compared with extant similar measures, the DSMP is more strongly correlated with HbA1c.

Randomized, controlled trial of behavior therapy for families of adolescents with insulin-dependent diabetes mellitus

OBJECTIVE

To describe the short-term results of a controlled trial of Behavioral Family Systems Therapy (BFST) for families of adolescents with diabetes.

METHODS

We randomized 119 families of adolescents with diabetes to 3 months' treatment with either BFST, an education and support Group (ES), or current therapy (CT). Family relationships, psychological adjustment to diabetes, treatment adherence and diabetic control were assessed at baseline, after 3 months of treatment (reported here), and 6 and 12 months later.

RESULTS

Compared with CT and ES, BFST yielded more improvement in parent-adolescent relations and reduced diabetes-specific conflict. Effects on psychological adjustment to diabetes and diabetic control were less robust and depended on the adolescent's age and gender. There were no effects on treatment adherence.

CONCLUSIONS

BFST yielded some improvement in parent-adolescent relationships; its effects on diabetes outcomes depended on the adolescent's age and gender. Factors mediating the effectiveness of BFST must be clarified.

Validation of measures of parents' preoperative anxiety and anesthesia knowledge

Parents' anxiety about their children's anesthesia may adversely affect the children's outcomes and compromise the quality of informed consent. Studies of these issues have been limited by the lack of validated measures of parental anxiety and knowledge surrounding anesthesia. In the present study, we evaluated psychometric properties of the Amsterdam Preoperative Anxiety and Information Scale (APAIS) and the Standard Anesthesia Learning Test (SALT) among 85 parents who participated in an evaluation of the effects of a videotape about pediatric anesthesia. The results supported the internal consistency, test-retest reliability, and concurrent validity of both instruments and documented the equivalence of two forms of the SALT. Factor analysis supported the previously demonstrated factor structure of the APAIS, further confirming its construct validity. We conclude that the APAIS and SALT are reliable and valid measures of parental anxiety and knowledge of pediatric anesthesia that can be used for clinical and research purposes.

IMPLICATIONS

This study verified the reliability and validity of two questionnaires for measuring parents' knowledge and anxiety about pediatric anesthesia. These questionnaires can be used in further research on factors affecting parental anxiety and knowledge before their children's surgery.

[Continuous arteriovenous hemofiltration in the management of patients with shock and multiorgan insufficiency syndrome]

Spontaneous continuous arterio-venous hemofiltration (CAVH) is a blood purification system based on blood filtration through capillary hemofilters without pumps, using the arterio-venous pressure gradient for blood perfusion. In 2-nd Department of Surgery of Medical University of Gdańsk in the years 1989-1996 we introduced CAVH 13 times in 6 women and 7 men, aged from 17 till 79 years. We used this technique to maintain fluid balance in anuric patients needing parenteral fluids. Due to circulatory and respiratory insufficiency all patients needed catecholamines infusion and controlled respiration. In 7 patients acute renal failure was caused by septic shock and in 6 patients by shock after severe multiorgan injuries. The CAVH therapy lasted from 3 till 16 days. The stabilisation of hemodynamic and renal parameters was observed in all patients. 3 patients died of cranio-cerebral injuries and 2 due to longlasting septic shock induced by necrotic pancreatitis. In all patients CAVH was required to remove the excess water given as carrier in total parenteral nutrition. Experience with 13 cases has shown the CAVH technique, to be particularly useful in patients with vascular instability or severe fluid overload. The above method which needs no technical investment is simple to handle.

Social validity of support group and behavior therapy interventions for families of adolescents with insulin-dependent diabetes mellitus

Compared the social validity of behavior therapy vs. support group interventions for reduction of parent-adolescent conflict among families of adolescents with diabetes. Families were randomized to 10 sessions of an Education and Support group (ES) or 10 sessions of Behavioral Family Systems Therapy (BFST). We compared participants' social validity ratings of BFST and ES using the Treatment Evaluation Questionnaire (TEQ). Mean TEQ scores were significantly more positive for BFST than ES and, for 13 of 20 items, BFST was rated significantly more positively by parents and/or adolescents. Adolescents rated ES less positively than did parents. Fathers' responses reflected fewer differences between ES and BFST. Results extend previous research on BFST and confirm its superiority over ES for targeting family conflict.

Psychometric properties and normative data for the parent version of the diabetes independence survey

The parent version of the Diabetes Independence Survey measures parents' perceptions of their children's mastery of 38 diabetes self-care skills. The instrument was administered to 648 parents of 622 children with insulin-dependent diabetes mellitus, ages 3 and 18 years, at seven different pediatric medical centers. Data confirming the internal consistency, interrater reliability, construct validity, and concurrent validity of the instrument are presented in this paper. Age-adjusted normative data for total scores on the instrument as well as item-by-item data on the ages at which mastery of each skill was reported by 25%, 50%, and 75% of parents also are discussed. The Diabetes Independence Survey can be used as a reliable, valid, and efficient research tool for assessing the growth and development of diabetes knowledge and skills among children and adolescents, and as a screening instrument and program evaluation tool for clinical purposes.

Deviation from developmentally appropriate self-care autonomy. Association with diabetes outcomes

OBJECTIVE

Treatment of IDDM in youth emphasized balancing children's self-care autonomy with their psychological maturity. However, few data exist to guide clinicians or parents, and little is known about correlates of deviations from this ideal.

RESEARCH DESIGN AND METHODS

In this cross-sectional study, IDDM self-care autonomy of 100 youth was assessed using two well-validated measures. Three measures of psychological maturity (cognitive function, social-cognitive development, and academic achievement) were also collected for each child. Composite indexes of self-care autonomy and of psychological maturity were formed, and the ratio of the self-care autonomy index to the psychological maturity index quantified each child's deviation from developmentally appropriate IDDM self-care autonomy. Based on these scores, participants were categorized as exhibiting constrained (lower tertile), appropriate (middle tertile), or excessive (higher tertile) self-care autonomy. Between-group differences in treatment adherence, diabetes knowledge, glycemic control, and hospitalization rates were explored.

RESULTS

Analysis of covariance controlling for age revealed that the excessive self-care autonomy group demonstrated less favorable treatment adherence, diabetes knowledge, hospitalization rates, and, marginally, glycemic control. Excessive self-care autonomy increased with age and was less common among intact two-parent families but was unrelated to other demographic factors.

CONCLUSIONS

The findings indicate caution about encouragement of maximal self-care autonomy among youth with IDDM and suggest that families who succeed in maintaining parental involvement in diabetes management may have better outcomes.

Associations among teen-parent relationships, metabolic control, and adjustment to diabetes in adolescents

Extended previous studies of adolescents with insulin-dependent diabetes mellitus (IDDM) that have implicated family conflict as a correlate of poor adaptation to the disease and inadequate diabetic control. Families of 115 adolescents with IDDM completed the Parent-Adolescent Relationship Questionnaire (PARQ) and the Teen Adjustment to Diabetes Scale (TADS) and recent glycohemoglobin levels were retrieved from medical records for 82 patients. PARQ scores of families of adolescents with IDDM were similar to those of a healthy normative group. Multiple regression analysis showed that a PARQ scale measuring family communication and conflict resolution skills was a strong predictor of the IDDM outcome variables, suggesting that these families could derive health and behavioral benefits from an intervention that improves parent-adolescent communication skills. Controlled trials of such interventions are needed.

Use of blood glucose data by families of children and adolescents with IDDM

OBJECTIVE

Prospective evaluation of the use of blood glucose test results for treatment actions by families of youth with IDDM.

RESEARCH DESIGN AND METHODS

Forty-seven patients with IDDM used reflectance meters with memory for SMBG for 28 days. Parents kept weekly diaries of six types of uses of SMBG data. We collected SMBG data from the reflectance meters, HbA1 and serum fructosamine assays, and measures of behavioral factors that could affect use of SMBG data.

RESULTS

Families recorded a mean of 4.85 data-based actions during the 28-day study, and 74% of the families reported at least one such action. Fifty percent of recorded actions consisted of management of hypoglycemia and, among the remainder, only 18% were anticipatory, proactive actions. Partial correlation analysis showed that families with more frequent use of SMBG data had less parent-child conflict about diabetes, more diabetes knowledge, and better overall treatment adherence. Use of SMBG data was unrelated to objective indices of the need for treatment adjustments or to diabetic control.

CONCLUSIONS

Most families made active use of their SMBG data, but few of these actions were proactive. Behavioral factors were stronger predictors of family use of SMBG data than were objective indices of the need for treatment adjustments. The results illustrate the need for further research on use of SMBG data and methods to enhance its impact on diabetic control.

Diabetes mellitus in the transition to adulthood: adjustment, self-care, and health status

A cross-sectional study of health and adjustment among 18 to 22-year-old patients with insulin-dependent diabetes mellitus (IDDM) is reported. Objectives were to examine coping with IDDM in this age group; to identify predictors of health status, treatment adherence, and health care use; and to provide a retrospective evaluation of the persistence of IDDM-specific adjustment from earlier through later adolescence. Multiple validated measures, interviews of independent informants, and biochemical assays were used to assess psychological, behavioral, and metabolic status. Patients and parents completed a retrospective measure of the patient's adjustment to IDDM during earlier adolescence. Findings (n = 81) indicated: (1) normal rates of general psychopathology but some evidence of poorer adjustment to IDDM relative to other age groups, (2) poor diabetic control and high incidence of microalbuminuria, (3) specific factors associated differentially with treatment compliance, health care use, diabetic control, and microalbuminuria among late adolescents, and (4) evidence that poor adjustment to IDDM in earlier adolescence persists into the transition to adulthood. The findings imply that late adolescents with IDDM are at risk of various unfavorable behavioral and health outcomes and that adjustment to the disease during earlier adolescence may be a predictor of subsequent health-related behavior and health status. A longitudinal study is needed to confirm these findings.

Parental and professional estimates of self-care independence of children and adolescents with IDDM

OBJECTIVE

To report the results of a survey of 490 parents of children with insulin-dependent diabetes mellitus (IDDM) regarding the children's mastery of 38 diabetes-care skills. Parental responses are contrasted with those of a previous survey in which 229 diabetes professionals estimated ages at which typical children with IDDM master the same skills.

RESEARCH DESIGN AND METHODS

Parents were recruited at five pediatric endocrinology clinics with a response rate of 88.9%.

RESULTS

For 33 of 38 skills, professionals' median mastery age estimates exceeded, by greater than or equal to 1 yr, the median ages that parents reported skill mastery by their estimates, children. Despite the parent-professional disagreement about mastery-age their survey responses yielded substantial agreement about the order of mastery of specific skills. The data also revealed two profiles of comparative results. For many items, parents reported earlier skill mastery, but parental and professional estimates eventually converged during adolescence. These skills consisted of rote, motoric acts, or more complex tasks for which errors yield relatively certain aversive consequences. For other skills, more professional estimated skill mastery among adolescents than did parents. These skills required substantial organization and self-regulation by the adolescent, involved treatment components for which the aversive consequences of errors are deferred and uncertain, or they were skills infrequently required of most patients with IDDM.

CONCLUSIONS

The parent-professional discordance revealed by this survey illustrates the importance of clear specification of treatment responsibilities, careful monitoring of self-care competence, and periodic reeducation of children with IDDM.

Fear of hypoglycemia in children and adolescents with diabetes

Extended a study of diabetic adults which showed that fear of hypoglycemia is common and may affect diabetic control. That study evaluated the psychometric properties of the Hypoglycemic Fear Survey (HFS), an instrument designed to measure fear of hypoglycemia. The present study evaluated the psychometric properties of the HFS with diabetic youth. The HFS was completed by 128 Ss on arrival at a diabetes summer camp, by 127 Ss at the end of the 7-day camp, and by 74 Ss 12 weeks after camp. The results support the internal consistency and test-retest reliability of the HFS with this age group. Factor analytic and multiple regression techniques support the construct validity of the scale. HFS scores enhanced prediction of diabetic control. The HFS appears to be useful as a research tool with children and adolescents, although cross-validation is needed before clinical use can be justified.

Behavior modification in pediatric hemodialysis

This article reports the results of a behavior modification approach for managing disruptive and noncompliant behaviors in four male hemodialysis patients ranging in age from 10 to 16 years. Each patient demonstrated some improvement in either behavior or health status during the intervention and 76.7% of available token reinforcers were earned. The intervention was inexpensive and well-accepted by the patients, families, and staff. Guidelines for the planning, implementation, and evaluation of such interventions are presented.

Survey of diabetes professionals regarding developmental changes in diabetes self-care

There are no empirically obtained data defining appropriate developmental expectations for the acquisition of self-care independence by children with insulin-dependent diabetes mellitus. This study surveyed diabetes professionals about their estimates of ages at which children typically master 38 diabetes skills. The 229 survey respondents represented a broad range of professions and clinical settings and had extensive experience as diabetes professionals. Mean mastery age estimates were less than 14 yr for the 38 skills assessed. Responses to each item were variable among respondents, with a mean SD of 2.1 yr in estimated mastery ages for all items. Estimated mastery ages were below the age ranges recommended by the American Diabetes Association for 14 of 20 comparable skills. Physicians generally expected the diabetes skills to be mastered at later ages than did nurses or other health-care professionals. There were no other consistent response patterns related to respondent characteristics, i.e., years of clinical experience, employment setting, current patient load, or method of survey distribution.

Blood glucose monitoring by diabetic adolescents: compliance and metabolic control

Self-monitoring of blood glucose (SMBG) is used in the management of diabetes to guide insulin and diet adjustments. However, SMBG has not achieved its potential impact on diabetic control, perhaps due to poor compliance. Research on SMBG compliance interventions has been hampered by a lack of reliable and practical methods of behavioral assessment. The appearance of reflectance meters with memory permits precise, yet efficient, measurement of SMBG behaviors, allowing more effective interventions. This study evaluated a behavioral contract for SMBG compliance among diabetic adolescents, using reflectance meters with memory to assess the target behavior. Thirty patients were randomized to either meter-alone or meter-plus-contract conditions; an additional 12 patients served in a conventional-therapy control group. Compliance for the meter-alone group declined sharply during the 16-week intervention, whereas it remained at or above baseline levels for the meter-plus-contract group. Despite the large between-groups differences in SMBG frequency, both groups showed equal, moderate improvement in measures of diabetic control, suggesting that SMBG frequency had little impact on health status in this sample. There were no intervention-specific effects on overall diabetes compliance or patient or parent adjustment to diabetes. Few of the measured patient characteristics were significant predictors of treatment response. Further research into maximizing the therapeutic impact of SMBG is needed.

Adjustment to diabetes mellitus in preschoolers and their mothers

Although preschool-aged children with diabetes might be at increased risk for both general and disease-specific psychological adjustment difficulties, this issue has not been investigated. We evaluated both general and diabetes-related adjustment of 20 preschool-aged children and their mothers. The mothers completed the Child Behavior Checklist, Parenting Stress Index, Parents' Diabetes Opinion Survey, and the Preschool Diabetes Behavior Checklist. The latter measure was constructed specifically for this study to measure the frequency of oppositional and avoidance behaviors of children regarding diabetes management tasks. Mothers reported that their children displayed significantly more internalizing behavior problems (anxiety, depression, withdrawal) and were a significantly greater source of parental stress compared with corresponding nondiabetic normative group samples. Also, certain maternal attitudes about diabetes and its treatment were correlated with the children's disease-specific behavior problems. The children's general psychological adjustment, however, was not predictive of these diabetes-specific behavior problems.

Impact of blood glucose monitoring on diabetic control: obstacles and interventions

Despite frequent use in the management of diabetes mellitus, self-monitoring of blood glucose (SMBG) is not achieving its potential therapeutic impact. Among the behavioral factors which may interfere with the improvement of diabetic control through SMBG are noncompliance and inadequate utilization of obtained blood glucose data. This paper reviews the research concerning these issues, including estimates of the prevalence and clinical significance of each of these limiting factors and an evaluation of assessment and intervention strategies which have been investigated. The methodological problems encountered in attempts to demonstrate that SMBG behaviors affect diabetic control are discussed. Although the existing research literature provides very weak evidence linking SMBG behaviors and diabetic control, the author asserts that it is premature to conclude that such relationships cannot be established and maintained.

Reducing the use of restrictive procedures in a residential facility

Restrictive procedures are frequently used in residential facilities for the mentally ill and developmentally disabled despite humanitarian, professional, and legal concerns. Administrators in a regional residential facility for the developmentally disabled instructed staff to reduce the use of seclusion, mechanical restraint, and psychotropic drugs in the facility and set clearly defined policies and procedures on the use of such restraints. Data were gathered on the prevalence of restrictive procedures before and after the new policies were implemented, and staff received frequent feedback. The data showed that in the two and a half years following the adoption of the new policies, the use of seclusion, mechanical restraint, and psychotropic drugs dropped significantly without a concomitant increase in violent incidents, staff turnover, or use of other restrictive procedures. The authors conclude that instructions and feedback are an effective and inexpensive way to reduce the use of restrictive treatment procedures and that the approach used in their facility merits further investigation.

Effects of phenytoin withdrawal on matching to sample and workshop performance of mentally retarded persons

The present study was designed to examine the effects of gradual phenytoin withdrawal on the matching to sample performance of three mentally retarded person. The percentage of correct responses per session served as the dependent variable, and the sample and comparison stimuli were red, green, and blue illuminations of translucent response windows. With two of the subjects, the sensitivity of a workshop assembly task to phenytoin effects was explored retrospectively. The dependent variables were percentage of time on task, number of completions, and number and type of prompts required per session. The results showed that doses of phenytoin considerably lower than the suggested optimum therapeutic level impaired the performance of mentally retarded individuals on both matching to sample and workshop assembly tasks. As doses were reduced for each subject, there were increases in the percentage of correct responding on the matching to sample task with the highest percentage correct being obtained after, and only after, the 0-mg dose was reached. In the workshop setting, the greatest number of assemblies completed and the lowest number of prompts required occurred only after the 0-mg dose was reached. The results are discussed in terms of generality, the tasks being well suited ot the study of drug effects with mentally retarded individuals, and implications for habilitation.

Effects of thioridazine (Mellaril) on titrating delayed matching-to-sample performance of mentally retarded adults

The effects of thioridazine on the performance of a titrating delayed matching-to-sample discrimination by four retarded adults was investigated. Trials began with the center of three response panels illuminated by one of three colors. The delay between depression of the center response panel and presentation of the two comparison stimuli on the side response panels varied according to the accuracy of the subjects' performance. The primary dependent variable was the limit of delay, defined as the longest delay at which the subject emitted four consecutive correct responses in a 30-minute session. The subjects' chronic doses of thioridazine were reduced systematically in a multiple baseline across-subjects design. For all of the subjects, the limit of delay increased after, and only after, reductions in the daily thioridazine dose had been implemented. Results indicated that the withdrawal of chronically administered thioridazine resulted in increased accuracy in a delayed matching-to-sample task, suggesting strongly that the drug impairs performance of this discrimination.

Behavioral management of exercise: contracting for aerobic points

Behavioral contracting was used to encourage physical exercise among college students in a multiple-baseline design. Subjects deposited items of personal value with the experimenters, which they could earn back on fulfillment of two types of contract contingencies. Subjects selected weekly aerobic point criteria, which they could fulfill by exercising in the presence of other subjects. In addition, subjects contracted to observe and record the exercise of other subjects and to perform an independent reliability observation once each week, with both of these activities monitored by the experimenters. Results indicated that the contract contingencies produced increases in the number of aerobic points earned per week for seven of eight subjects, that the aerobic point system possesses several advantages as a dependent variable for behavioral research on exercise, and that inexperienced observers could be quickly trained to observe exercise behavior and to translate those observations into their aerobic point equivalents. Finally, in a followup questionnaire completed 12 months after the end of the study, seven of the eight subjects reported that they were earning more aerobic points per week than had been the case during the baseline condition of this experiment.

Blood glucose monitoring by diabetic adolescents: compliance and metabolic control

Self-monitoring of blood glucose (SMBG) is used in the management of diabetes to guide insulin and diet adjustments. However, SMBG has not achieved its potential impact on diabetic control, perhaps due to poor compliance. Research on SMBG compliance interventions has been hampered by a lack of reliable and practical methods of behavioral assessment. The appearance of reflectance meters with memory permits precise, yet efficient, measurement of SMBG behaviors, allowing more effective interventions. This study evaluated a behavioral contract for SMBG compliance among diabetic adolescents, using reflectance meters with memory to assess the target behavior. Thirty patients were randomized to either meter-alone or meter-plus-contract conditions; an additional 12 patients served in a conventional-therapy control group. Compliance for the meter-alone group declined sharply during the 16-week intervention, whereas it remained at or above baseline levels for the meter-plus-contract group. Despite the large between-groups differences in SMBG frequency, both groups showed equal, moderate improvement in measures of diabetic control, suggesting that SMBG frequency had little impact on health status in this sample. There were no intervention-specific effects on overall diabetes compliance or patient or parent adjustment to diabetes. Few of the measured patient characteristics were significant predictors of treatment response. Further research into maximizing the therapeutic impact of SMBG is needed.