Integrating multiple blockchains to support distributed personal health records

Blockchain technologies have evolved in recent years, as have the use of personal health record (PHR) data. Initially, only the financial domain benefited from Blockchain technologies. Due to efficient distribution format and data integrity security, however, these technologies have demonstrated potential in other areas, such as PHR data in the healthcare domain. Applying Blockchain to PHR data faces different challenges than applying it to financial transactions via crypto-currency. To propose and discuss an architectural model of a Blockchain platform named "OmniPHR Multi-Blockchain" to address key challenges associated with geographical distribution of PHR data. We analyzed the current literature to identify critical barriers faced when applying Blockchain technologies to distribute PHR data. We propose an architecture model and describe a prototype developed to evaluate and address these challenges. The OmniPHR Multi-Blockchain architecture yielded promising results for scenarios involving distributed PHR data. The project demonstrated a viable and beneficial alternative for processing geographically distributed PHR data with performance comparable with conventional methods. Blockchain's implementation tools have evolved, but the domain of healthcare still faces many challenges concerning distribution and interoperability. This study empirically demonstrates an alternative architecture that enables the distributed processing of PHR data via Blockchain technologies.

Genetic cancer risk assessment: A screenshot of the psychosocial profile of women at risk for hereditary breast and ovarian cancer syndrome

OBJECTIVE

There is a lack of information describing Brazilian women at risk of hereditary breast and ovarian cancer syndrome (HBOC) who undergo genetic cancer risk assessment (GCRA). This study aims to characterize the psychosocial profile of women at risk for HBOC at their first GCRA to obtain an overview of their families' profiles and the challenges of the oncogenetics setting.

METHODS

This was a cross-sectional study in which interviews were conducted with 83 cancer-affected women at their first GRCA appointment after the pedigree draw. Tools to evaluate psychological outcomes were applied. The pedigree genogram and ecomap were constructed and analyzed with content analysis using the "life course perspective" theory.

RESULTS

Individuals perceived their breast/ovarian cancer risk to be equal to that of the general population, although they were highly concerned about developing cancer. No evidence of anxiety or depressive symptoms was identified. Participants used the coping strategy of searching for religiosity. The genograms and ecomaps resulted in five major themes: support and social support; attitudes, feelings and emotions; cancer causes; communication; and relationships with relatives. Individuals between 20-29 years of age and those with no family history of cancer tended not to communicate with relatives, which may indicate future problems in the GCRA process regarding genetic testing.

CONCLUSIONS

This study demonstrated that knowing the families who undergo the GCRA process can help professionals provide more individualized and thorough attention during GCRA and genetic testing, which results in better follow-up and prevention strategies.

Factors associated with recurrence of alcohol-related traffic violations in southern Brazil

OBJECTIVE

To analyze variables associated with recurrence of blood alcohol content (BAC)-related traffic violations among drivers in southern Brazil.

METHOD

This cross-sectional study included 12,204 driving-under-the-influence (DUI) offenders according to data provided by the Rio Grande do Sul state Transportation Department. Sociodemographic characteristics, license duration, license category, and psychological assessment results were analyzed. Drivers convicted of DUI more than once in 2009/2010 were considered recidivists. Variables were evaluated using descriptive statistical analysis and Poisson regression, adjusted by sex, age, and education level.

RESULTS

A total of 538 (4.41%) drivers were considered recidivists. The following variables showed the strongest associations with recidivism: being aged 41-50 years (prevalence ratio [PR] = 3.41), being licensed for ≥ 12 years (PR = 1.86), being licensed for motorcycles, cars and trucks (PR = 1.36), having a license with psychological restrictions (PR = 1.33), and driving a truck or a similar vehicle at the moment of notification (PR = 1.08).

CONCLUSIONS

In the age group with the highest risk for recurrence, drivers showed a higher probability of having a diagnosis of alcohol dependence and other psychiatric comorbidities that hinder the control of alcohol use. Psychological assessments seem to be important in predicting repeat offenses, especially when limited aptitudes are suspected, and should therefore be better investigated.

Study of the comprehension of the scientific method by members of a university health research laboratory

In Brazil, scientific research is carried out mainly at universities, where professors coordinate research projects with the active participation of undergraduate and graduate students. However, there is no formal program for the teaching/learning of the scientific method. The objective of the present study was to evaluate the comprehension of the scientific method by students of health sciences who participate in scientific projects in an academic research laboratory. An observational descriptive cross-sectional study was conducted using Edgar Morin complexity as theoretical reference. In a semi-structured interview, students were asked to solve an abstract logical puzzle - TanGram. The collected data were analyzed using the hermeneutic-dialectic analysis method proposed by Minayo and discussed in terms of the theoretical reference of complexity. The students' concept of the scientific method is limited to participation in projects, stressing the execution of practical procedures as opposed to scientific thinking. The solving of the TanGram puzzle revealed that the students had difficulties in understanding questions and activities focused on subjects and their processes. Objective answers, even when dealing with personal issues, were also reflected on the students' opinions about the characteristics of a successful researcher. Students' difficulties concerning these issues may affect their scientific performance and result in poorly designed experiments. This is a preliminary study that should be extended to other centers of scientific research.

Clinical profile, quality of life and depressive symptoms of women with urinary incontince attending a university hospital

OBJECTIVES

To describe the characteristics of urinary incontinence (UI) and to evaluate its impact on health-related quality of life (QOL) and depressive symptoms in women referred for physical therapy at a university hospital.

METHODS

A descriptive cross-sectional study with demographic data collection related to UI. All women were evaluated through examination and also through depression and QOL questionnaires.

RESULTS

Forty-eight women were evaluated (53.8±10.9 years), 47.9% with mixed UI (MUI), 39.6% with stress UI (SUI) and 12.5% with urge UI (UUI). In 50% of the cases the urinary loss lasted between 3.3 and 10 years. There was no significant difference in the pelvic floor muscle strength among the different types of UI (P>0.05). Depressive symptoms were detected in 37% of the women. Changes in the QOL were observed in all three groups of women with UI. According to the King's Health Questionnaire (KHQ), women with MUI presented more compromised health perception and greater physical, social, daily activity and personal relationship limitations (P<0.05). The women with MUI presented a worse health perception (P<0.05) according to the WHOQOL-Bref.

CONCLUSION

Depressive symptoms were detected in more than a third of the women whose quality of life was adversely affected and the greatest impact was observed in the patients with MUI.

Assisted reproduction: what factors interfere in the professional's decisions? Are single women an issue?

Background

With the development of medical technology, many countries around the world have been implementing ethical guidelines and laws regarding Medically Assisted Reproduction (MAR). A physician's reproductive decisions are not solely based on technical criteria but are also influenced by society values. Therefore, the aim of this study was to analyze the factors prioritized by MAR professionals when deciding on whether to accept to perform assisted reproduction and to show any existing cultural differences.

Methods

Cross-sectional study involving 224 healthcare professionals working with assisted reproduction in Brazil, Italy, Germany and Greece. Instrument used for data collection: a questionnaire, followed by the description of four special MAR cases (a single woman, a lesbian couple, an HIV discordant couple and gender selection) which included case-specific questions regarding the professionals' decision on whether to perform the requested procedure as well as the following factors: socio-demographic variables, moral and legal values as well as the technical aspects which influence decision-making.

Results

Only the case involving a single woman who wishes to have a child (without the intention of having a partner in the future) demonstrated significant differences. Therefore, the study was driven towards the results of this case specifically. The analyses we performed demonstrated that professionals holding a Master's Degree, those younger in age, female professionals, those having worked for less time in reproduction, those in private clinics and Brazilian health professionals all had a greater tendency to perform the procedure in that case. A multivariate analysis demonstrated that the reasons for the professional's decision to perform the procedure were the woman's right to gestate and the duty of MAR professionals to help her. The professionals who decided not to perform the procedure identified the woman's marital status and the child's right to a father as the reason to withhold treatment.

Conclusion

The study indicates differences among countries in the evaluation of the single woman case. It also discloses the undervaluation of bioethics committees and the need for a greater participation of healthcare professionals in debates on assisted reproduction laws.

Moral-psychological development related to the capacity of adolescents and elderly patients to consent

OBJECTIVE

To evaluate moral development as an indicator of the capacity to consent among two groups of patients from the Hospital de Clínicas in Porto Alegre, RS, Brazil.

METHOD

Fifty-nine adolescents and 60 patients over 60 years of age participated in a cross-sectional study to assess moral development using Loevinger's model of ego stages.

RESULTS

Age and moral development showed no association, with most participants in the two groups being in the conscientious phase.

CONCLUSIONS

Age is probably not an adequate variable to measure decision-making capacity, because questions of medical consent relate to participants' own personal health. Decision-making capacity should be viewed as a continuous function. While the age of the person whose consent is needed should be considered, age alone, from a moral perspective, is not the main determinant of this capacity.

Ethical issues in a Brazilian hospital

PURPOSE

The objective of this paper is to discuss ethical issues such as data protection, confidentiality, and patient freedom taking two ongoing studies as examples.

METHODS

The two studies are being carried out at a public hospital in southern Brazil. Study 1 evaluates inadequate use of drugs (mainly vancomycin) and aims at reviewing criteria for drug use control. It includes records of 100 patients whose prescriptions are dispensed at the hospital's pharmacy. A major ethical concern in this study was to ensure data confidentiality. Study 2 evaluates treatment adherence by hypertension patients with a focus on hydrochlorothiazide. Here, in addition to data protection, a major ethical concern was the ability of patients to understand the informed consent form and therefore freely enter or refuse to enter the study. Both projects were approved by the Institutional Review Board at Hospital de Clínicas de Porto Alegre.

RESULTS

In both studies, data confidentiality is ensured by the removal of all personal information from the forms used for data analysis. In Study 2, readability of the informed consent was considered adequate by the IRB for the population served by the clinic, and one-third of the patients who were contacted agreed to participate in the study.

CONCLUSIONS

To obtain reliable results, basic ethical principles must be observed throughout the planning and execution of research projects, whether data are obtained from medical records or from actual interaction with patients. Thus, monitoring by an Institutional Review Board or equivalent is of paramount importance.

[Coagulase-negative Staphylococcus sp. in blood cultures from infants less than 60 days old: infection versus contamination]

OBJECTIVE

The aim of this study was to determine the prevalence of infection versus the prevalence of contamination in infants less than 60 days old who had blood cultures positive for CoNS.

MATERIAL AND METHODS

Between February and June - 1993, a number of 45 blood cultures positive for CoNS from 41 patients were studied. Patients were classified in three groups according to their clinical and laboratorial data: I- infected patients, II- non-infected patients and III- dubious.

RESULTS

The results showed that 11 patients (26.8%) were included in group I, 25 (61%) in group II (contaminated blood cultures), and 5 (12.2%) in group III.

CONCLUSION

It is suggested that more than one blood culture should be requested before treatment with antimicrobials, avoiding unnecessary administration of antibiotics.