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Modelling of physicians clinical information-seeking behaviour in Iran: a grounded theory study

Por: Daei · A. · Soleymani · M. R. · Zargham-Boroujeni · A. · Kelishadi · R. · Ashrafi-rizi · H.
Objectives

Exploring clinical information-seeking behaviour (CISB) and its associated factors contributes to its theoretical advancement and offers a valuable framework for addressing physicians’ information needs. This study delved into the dimensions, interactions, strategies and determinants of CISB among physicians at the point of care.

Design

A grounded theory study was developed based on Strauss and Corbin’s approach. Data were collected by semistructured interviews and then analysed through open, axial and selective coding.

Setting

The study was conducted at academic centres affiliated with Isfahan University of Medical Sciences.

Participants

This investigation involved recruiting 21 specialists and subspecialists from the academic centres.

Results

The findings revealed that physicians’ CISB encompassed multiple dimensions when addressing clinical inquiries. Seven principal themes emerged from the analysis: ‘clinical information needs’, ‘clinical question characteristics’, ‘clinical information resources’, ‘information usability’, ‘factors influencing information seeking’, ‘action/interaction encountering clinical questions’ and ‘consequences of CISB’. The core category identified in this study was ‘focused attention’.

Conclusions

The theoretical explanation demonstrated that the CISB process was interactive and dynamic. Various stimuli, including causal, contextual and intervening conditions, guide physicians in adopting information-seeking strategies and focusing on resolving clinical challenges. However, insufficient stimuli may hinder physicians’ engagement in CISB. Understanding CISB helps managers, policy-makers, clinical librarians and information system designers optimally implement several interventions, such as suitable training methods, reviewing monitoring and evaluating information systems, improving clinical decision support systems, electronic medical records and electronic health records, as well as monitoring and evaluating these systems. Such measures facilitate focused attention on clinical issues and promote CISB among physicians.

Global trends in chronic kidney disease-related mortality: a systematic review protocol

Por: Tungsanga · S. · Ghimire · A. · Hariramani · V. K. · Abdulrahman · A. · Khan · A. S. · Ye · F. · Kung · J. Y. · Klarenbach · S. · Thompson · S. · Collister · D. · Srisawat · N. · Okpechi · I. G. · Bello · A. K.
Introduction

In recent decades, all-cause mortality has increased among individuals with chronic kidney disease (CKD), influenced by factors such as aetiology, standards of care and access to kidney replacement therapies (dialysis and transplantation). The recent COVID-19 pandemic also affected mortality over the past few years. Here, we outline the protocol for a systematic review to investigate global temporal trends in all-cause mortality among patients with CKD at any stage from 1990 to current. We also aim to assess temporal trends in the mortality rate associated with the COVID-19 pandemic.

Methods and analysis

We will conduct a systematic review of studies reporting mortality for patients with CKD following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We will search electronic databases, national and multiregional kidney registries and grey literature to identify observational studies that reported on mortality associated with any cause for patients with CKD of all ages with any stage of the disease. We will collect data between April and August 2023 to include all studies published from 1990 to August 2023. There will be no language restriction, and clinical trials will be excluded. Primary outcome will be temporal trends in CKD-related mortality. Secondary outcomes include assessing mortality differences before and during the COVID-19 pandemic, exploring causes of death and examining trends across CKD stages, country classifications, income levels and demographics.

Ethics and dissemination

A systematic review will analyse existing data from previously published studies and have no direct involvement with patient data. Thus, ethical approval is not required. Our findings will be published in an open-access peer-reviewed journal and presented at scientific conferences.

PROSPERO registration number

CRD42023416084.

Enhancing blood pressure management protocol implementation in patients with acute intracerebral haemorrhage through a nursing‐led approach: A retrospective cohort study

Abstract

Aim

To evaluate the impact of nurse care changes in implementing a blood pressure management protocol on achieving rapid, intensive and sustained blood pressure reduction in acute intracerebral haemorrhage patients.

Design

Retrospective cohort study of prospectively collected data over 6 years.

Methods

Intracerebral haemorrhage patients within 6 h and systolic blood pressure ≥ 150 mmHg followed a rapid (starting treatment at computed tomography suite with a target achievement goal of ≤60 min), intensive (target systolic blood pressure < 140 mmHg) and sustained (maintaining target stability for 24 h) blood pressure management plan. We differentiated six periods: P1, stroke nurse at computed tomography suite (baseline period); P2, antihypertensive titration by stroke nurse; P3, retraining by neurologists; P4, integration of a stroke advanced practice nurse; P5, after COVID-19 impact; and P6, retraining by stroke advanced practice nurse. Outcomes included first-hour target achievement (primary outcome), tomography-to-treatment and treatment-to-target times, first-hour maximum dose of antihypertensive treatment and 6-h and 24-h systolic blood pressure variability.

Results

Compared to P1, antihypertensive titration by stroke nurses (P2) reduced treatment-to-target time and increased the rate of first-hour target achievement, retraining of stroke nurses by neurologists (P3) maintained a higher rate of first-hour target achievement and the integration of a stroke advanced practice nurse (P4) reduced both 6-h and 24-h systolic blood pressure variability. However, 6-h systolic blood pressure variability increased from P4 to P5 following the impact of the COVID-19 pandemic. Finally, compared to P1, retraining of stroke nurses by stroke advanced practice nurse (P6) reduced tomography-to-treatment time and increased the first-hour maximum dose of antihypertensive treatment.

Conclusion

Changes in nursing care and continuous education can significantly enhance the time metrics and blood pressure outcomes in acute intracerebral haemorrhage patients.

Reporting Method

STROBE guidelines.

Patient and Public Contribution

No Patient or Public Contribution.

Health professionals’ perceptions of the development needs of incident reporting software: A qualitative systematic review

Abstract

Aim

To systemically identify and synthesize information on health professionals’ and students’ perceptions regarding the development needs of incident reporting software.

Design

A systematic review of qualitative studies.

Data Sources

A database search was conducted using Medline, CINAHL, Scopus, Web of Science and Medic without time or language limits in February 2023.

Review methods

A total of 4359 studies were identified. Qualitative studies concerning the perceptions of health professionals and students regarding the development needs of incident reporting software were included, based on screening and critical appraisal by two independent reviewers. A thematic synthesis was conducted.

Results

From 10 included studies, five analytical themes were analysed. Health professionals and students desired the following improvements or changes to incident reporting software: (1) the design of reporting software, (2) the anonymity of reporting, (3) the accessibility of reporting software, (4) the classification of fields and answer options and (5) feedback and tracking of reports. Wanted features included suitable reporting forms for various specialized fields that could be integrated into existing hospital information systems. Rapid, user-friendly reporting software using multiple reporting platforms and with flexible fields and predefined answer options was preferred. While anonymous reporting was favoured, the idea of reporting serious incidents with both patient and reporter names was also suggested.

Conclusion

Health professionals and students provided concrete insights into the development needs for reporting software. Considering the underreporting of healthcare cases, the perspectives of healthcare professionals must be considered while developing user-friendly reporting tools. Reporting software that facilitates the reporting process could reduce underreporting.

Reporting Method

The ENTREQ reporting guideline was used to support the reporting of this systematic review.

Patient or Public Contribution

There was no patient or public contribution.

Protocol Registration

The protocol is registered in the International Prospective Register of Systematic Reviews with register number CRD42023393804.

Landscape use by large grazers in a grassland is restructured by wildfire

by Aishwarya Subramanian, Rachel M. Germain

Animals navigate landscapes based on perceived risks vs. rewards, as inferred from features of the landscape. In the wild, knowing how strongly animal movement is directed by landscape features is difficult to ascertain but widespread disturbances such as wildfires can serve as natural experiments. We tested the hypothesis that wildfires homogenize the risk/reward landscape, causing movement to become less directed, given that fires reduce landscape complexity as habitat structures (e.g., tree cover, dense brush) are burned. We used satellite imagery of a research reserve in Northern California to count and categorize paths made primarily by mule deer (Odocoileus hemionus) in grasslands. Specifically, we compared pre-wildfire (August 2014) and post-wildfire (September 2018) image history layers among locations that were or were not impacted by wildfire (i.e., a Before/After Control/Impact design). Wildfire significantly altered spatial patterns of deer movement: more new paths were gained and more old paths were lost in areas of the reserve that were impacted by wildfire; movement patterns became less directed in response to fire, suggesting that the risk/reward landscape became more homogenous, as hypothesized. We found evidence to suggest that wildfire affects deer populations at spatial scales beyond their scale of direct impact and raises the interesting possibility that deer perceive risks and rewards at different spatial scales. In conclusion, our study provides an example of how animals integrate spatial information from the environment to make movement decisions, setting the stage for future work on the broader ecological implications for populations, communities, and ecosystems, an emerging interest in ecology.

"Just as curry is needed to eat rice, antibiotics are needed to cure fever"--a qualitative study of individual, community and health system-level influences on community antibiotic practices in rural West Bengal, India

Por: Gautham · M. · Bhattacharyya · S. · Maity · S. · Roy · M. B. · Balasubramaniam · P. · Ebata · A. · Bloom · G.
Objectives

To understand community antibiotic practices and their drivers, comprehensively and in contextually sensitive ways, we explored the individual, community and health system-level factors influencing community antibiotic practices in rural West Bengal in India.

Design

Qualitative study using focus group discussions and in-depth interviews.

Setting

Two contrasting village clusters in South 24 Parganas district, West Bengal, India. Fieldwork was conducted between November 2019 and January 2020.

Participants

98 adult community members (42 men and 56 women) were selected purposively for 8 focus group discussions. In-depth interviews were conducted with 16 community key informants (7 teachers, 4 elected village representatives, 2 doctors and 3 social workers) and 14 community health workers.

Results

Significant themes at the individual level included sociodemographics (age, gender, education), cognitive factors (knowledge and perceptions of modern antibiotics within non-biomedical belief systems), affective influences (emotive interpretations of appropriate medicine consumption) and economic constraints (affordability of antibiotic courses and overall costs of care). Antibiotics were viewed as essential fever remedies, akin to antipyretics, with decisions to halt mid-course influenced by non-biomedical beliefs associating prolonged use with toxicity. Themes at the community and health system levels included the health stewardship roles of village leaders and knowledge brokering by informal providers, pharmacists and public sector accredited social health activists. However, these community resources lacked sufficient knowledge to address people’s doubts and concerns. Qualified doctors were physically and socially inaccessible, creating a barrier to seeking their expertise.

Conclusions

The interplay of sociodemographic, cognitive and affective factors, and economic constraints at the individual level, underscores the complexity of antibiotic usage. Additionally, community leaders and health workers emerge as crucial players, yet their knowledge gaps and lack of empowerment pose challenges in addressing public concerns. This comprehensive analysis highlights the need for targeted interventions that address both individual beliefs and community health dynamics to promote judicious antibiotic use.

Development and psychometric properties evaluation of nurses innovative behaviours inventory in Iran: protocol for a sequential exploratory mixed-method study

Por: Shahidi Delshad · E. · Soleimani · M. · Zareiyan · A. · Ghods · A. A.
Introduction

Nurses’ innovative behaviours play a crucial role in addressing the challenges including adapting to emerging technologies, resource limitations and social realities such as population ageing that are intricately tied to today’s healthcare landscape. Innovative behaviours improve healthcare quality, patient safety and satisfaction. Organisational factors and individual attributes influence nurses’ inclination to innovate. With the rise of artificial intelligence and novel technology, healthcare institutions are actively engaged in the pursuit of identifying nurses who demonstrate innovative qualities. Developing a comprehensive protocol to elucidate the various dimensions of nurses’ innovative behaviours and constructing a valid measuring instrument, rooted in this protocol represents a significant step in operationalising this concept.

Methods and analysis

The study encompasses two phases: a qualitative study combined with a literature review, followed by the design and psychometric evaluation of the instrument. To ensure diversity, a maximum variation purposive sampling method will be used during the qualitative phase to select clinical nurses. In-depth semistructured interviews will be conducted and analysed using conventional content analysis. Additionally, a comprehensive literature review will supplement any missing features not captured in the qualitative phase, ensuring their inclusion in the primary tool. The subsequent quantitative phase will focus on evaluating the questionnaire’s psychometric properties, including face, content and construct validity through exploratory factor analyses (including at least 300 samples) and confirmatory factor analyses (including at least 200 samples). Internal consistency (Cronbach’s alpha), reliability (test–retest), responsiveness, interpretability and scoring will also be assessed.

Ethics and dissemination

This study originates from a doctoral dissertation in nursing. Permission and ethical approval from Semnan University of Medical Sciences has been obtained with reference code IR.SEMUMS.1401.226. The study’s findings will ultimately be submitted as a research paper to a peer-reviewed journal.

Nurses engaging with referral letters and discharge summaries: A qualitative study

Abstract

Aims

To investigate the ways that nurses engage with referral letters and discharge summaries, and the qualities of these documents they find valuable for safe and effective practice.

Design

This study comprised a qualitative, case-study design within a constructivist paradigm using convenience sampling.

Methods

Interviews were conducted with nurses to investigate their practices relating to referral letters and discharge summaries. Data collection also involved nurses' examination and evaluation of a diverse range of 10 referral letters and discharge summaries from medical records at two Australian hospitals through focus-group sessions. The data were transcribed and analysed inductively.

Results

In all, 67 nurses participated in interviews or focus groups. Nurses indicated they used referral letters and discharge summaries to inform their work when caring for patients at different times throughout their hospitalisation. These documents assisted them with verbal handovers, to enable them to educate patients about their condition and treatment and to provide a high standard of care. The qualities of referral letters and discharge summaries that they most valued were language and communication, an awareness of audience and clinical knowledge, as well as balancing conciseness with comprehensiveness of information.

Conclusion

Nurses relied on referral letters and discharge summaries to ensure safe and effective patient care. They used these documents to enhance their verbal handovers, contribute to patient care and to educate the patient about their condition and treatment. They identified several qualities of these documents that assisted them in maintaining patient safety including clarity and conciseness of information.

Implications for the Profession and Patient Care

It is important that referral letters and discharge summaries are written clearly, concisely and comprehensively because nurses use them as key sources of evidence in planning and delivering care, and in communicating with other health professionals in relaying goals of care and implementing treatment plans.

Impact

Nurses reported that they regularly used referral letters and discharge summaries as valuable sources of evidence throughout their patients' hospitalisation. The qualities of these documents which they most valued were language and communication styles, awareness of audience and clinical knowledge, as well as balancing conciseness with comprehensiveness of information. This research has important impact on the patient experience in relation to encouraging effective referral letter and discharge summary writing.

Reporting Method

We have adhered to the relevant EQUATOR guidelines through the SRQR reporting method.

Patient or Public Contribution

No patient or public contribution.

Effect of a multidisciplinary team approach on the management of diabetic foot ulcers on the Central Coast: A review of the Gosford Hospital High‐Risk Foot Clinic

Abstract

This retrospective cohort study aims to assess whether the implementation of a multidisciplinary approach in the Gosford Hospital High-Risk Foot Clinic improved outcomes of diabetic foot ulcers. Ulceration is a common foot complication of diabetes mellitus and greatly increases patient morbidity and mortality. Patients who attended at least one appointment at the Gosford Hospital High-Risk Foot Clinic in 2017 or 2019 were identified through the Gosford Hospital Podiatry department's records. The 2017 and 2019 cohorts were compared on measures of ulcer healing, incidence of amputation, incidence of vascular intervention and surgical debridement, percentage of patients admitted to hospital due to complications and use of systemic antibiotic therapy. Sixty-one patients in 2017 and 59 patients in 2019 met inclusion criteria, and from them, 207 ulcers were included. Between 2017 and 2019, there was a 6.2-week reduction in time to 100% ulcer healing in 2019 (p = 0.021), and 10.1% more ulcers healed within 52 weeks (p = 0.22, 95% confidence interval [CI] [−5.9%, 25.5%]). Whilst there was no significant difference in incidence of patients receiving amputation, there was an increased absolute number of amputations in 2019. Implementation of a multidisciplinary approach at the Gosford Hospital High-Risk Foot Clinic led to improvements in diabetic foot ulcer healing.

Clinical evaluation of a fully electronic microfluidic white blood cell analyzer

by Jianye Sui, Zhongtian Lin, Shahriar Azizpour, Fei Chen, Sunanda Gaur, Kelly Keene, Farzad Soleimani, Tanaya Bhowmick, Zubaid Rafique, Mehdi Javanmard

The White Blood Cell (WBC) count is one of the key parameters signaling the health of the immune system. Abnormal WBC counts often signal a systemic insult to the body such as an underlying infection or an adverse side effect to medication. Typically, the blood collected is sent to a central lab for testing, and results come back within hours, which is often inconvenient and may delay time-sensitive diagnosis or treatment. Here, we present the CytoTracker, a fully electronic, microfluidic based instant WBC analyzer with the potential to be used at point-of-care. The CytoTracker is a lightweight, portable, affordable platform capable of quantifying WBCs within minutes using only 50 μl of blood (approximately one drop of blood). In this study, we clinically evaluated the accuracy and performance of CytoTracker in measuring WBC and granulocyte counts. A total of 210 adult patients were recruited in the study. We validated the CytoTracker against a standard benchtop analyzer (Horiba Point of Care Hematology Analyzer, ABX Micros 60). Linear dynamic ranges of 2.5 k/μl– 35 k/μl and 0.6 k/μl– 26 k/μl were achieved for total WBC count and granulocyte count with correlation coefficients of 0.97 and 0.98. In addition, we verified CytoTracker’s capability of identifying abnormal blood counts with above 90% sensitivity and specificity. The promising results of this clinical validation study demonstrate the potential for the use of the CytoTracker as a reliable and accurate point-of-care WBC analyzer.

Dislodgement resistance and structural changes of tricalcium silicate-based cements after exposure to different chelating agents

by Özgür İlke Ulusoy, Nidambur Vasudev Ballal, Rajkumar Narkedamalli, Nuran Ulusoy, Krishna Prasad Shetty, Alexander Maniangat Luke

This study aimed to evaluate the dislodgement resistance and structural changes of different mineral trioxide aggregate cements (MTA) like Pro-Root MTA, Ortho MTA, and Retro MTA after exposure to sodium hypochlorite (NaOCl), NaOCl-Ethylenediaminetetraacetic acid (EDTA), 1-hydroxyethylidene-1, 1-bisphosphonate (Dual Rinse HEDP), and NaOCl-Maleic acid (MA). The root canal spaces of 150 dentine slices were obturated using tricalcium silicate cements and divided into 3 groups (n = 50): Group1: ProRoot MTA, Group2: Retro MTA, and Group3: Ortho MTA. The samples in each group were further subdivided into four experimental (n = 10) and one control groups (n = 10): 2.5% NaOCl-17% EDTA, Dual Rinse HEDP, 2.5% NaOCl-7% Maleic acid, 2.5% NaOCl, distilled water (control). The dislodgement resistance and structural changes of cements were measured. Use of DR HEDP resulted in higher dislodgement resistance compared to17% EDTA and 7% MA in the samples obturated with Ortho MTA and Pro-Root MTA (p

Predicting radiographic outcomes of vertebral body tethering in adolescent idiopathic scoliosis patients using machine learning

by Ausilah Alfraihat, Amer F. Samdani, Sriram Balasubramanian

Anterior Vertebral Body Tethering (AVBT) is a growing alternative treatment for adolescent idiopathic scoliosis (AIS), offering an option besides spinal fusion. While AVBT aims to correct spinal deformity through growth correction, its outcomes have been mixed. To improve surgical outcomes, this study aimed to develop a machine learning-based tool to predict short- and midterm spinal curve correction in AIS patients who underwent AVBT surgery, using the most predictive clinical, radiographic, and surgical parameters. After institutional review board approval and based on inclusion criteria, 91 AIS patients who underwent AVBT surgery were selected from the Shriners Hospitals for Children, Philadelphia. For all patients, longitudinal standing (PA or AP, and lateral) and side bending spinal Radiographs were retrospectively obtained at six visits: preop and first standing, one year, two years, five years postop, and at the most recent follow-up. Demographic, radiographic, and surgical features associated with curve correction were collected. The sequential backward feature selection method was used to eliminate correlated features and to provide a rank-ordered list of the most predictive features of the AVBT correction. A Gradient Boosting Regressor (GBR) model was trained and tested using the selected features to predict the final correction of the curve in AIS patients. Eleven most predictive features were identified. The GBR model predicted the final Cobb angle with an average error of 6.3 ± 5.6 degrees. The model also provided a prediction interval, where 84% of the actual values were within the 90% prediction interval. A list of the most predictive features for AVBT curve correction was provided. The GBR model, trained on these features, predicted the final curve magnitude with a clinically acceptable margin of error. This model can be used as a clinical tool to plan AVBT surgical parameters and improve outcomes.

Nursing core competencies for postresuscitation care in Iran: a qualitative study

Por: Zali · M. · Rahmani · A. · Powers · K. · Hassankhani · H. · Namdar-Areshtanab · H. · Gilani · N.
Objective

This study explored nurses’ perceptions of the core competencies required for providing postresuscitation care in both in-hospital and out-of-hospital cardiac arrest.

Design

Qualitative conventional content analysis.

Participants

17 nurses selected with purposeful sampling method.

Setting

Three educational hospitals in northwest of Iran.

Data collection and analysis

Semi-structured interviews were used for data collection and they were analysed using conventional content analysis.

Results

Seven main categories have emerged from the data. The core competencies for nurses providing postresuscitation were identified as: quality assurance, providing evidence-based care, monitoring and presence, situation management, professionalism, positive attitude and providing family centred care.

Conclusions

The postresuscitation period is a unique and critical time requiring highly competent nursing care. Several core competencies for providing high-quality nursing care during postresuscitation period were identified through nurses’ experience in caring for patients postresuscitation.

The other COVID‐19 survivors: Timing, duration, and health impact of post‐acute sequelae of SARS‐CoV‐2 infection

Abstract

Aims and Objectives

To determine the frequency, timing, and duration of post-acute sequelae of SARS-CoV-2 infection (PASC) and their impact on health and function.

Background

Post-acute sequelae of SARS-CoV-2 infection is an emerging major public health problem that is poorly understood and has no current treatment or cure. PASC is a new syndrome that has yet to be fully clinically characterised.

Design

Descriptive cross-sectional survey (n = 5163) was conducted from online COVID-19 survivor support groups who reported symptoms for more than 21 days following SARS-CoV-2 infection.

Methods

Participants reported background demographics and the date and method of their covid diagnosis, as well as all symptoms experienced since onset of covid in terms of the symptom start date, duration, and Likert scales measuring three symptom-specific health impacts: pain and discomfort, work impairment, and social impairment. Descriptive statistics and measures of central tendencies were computed for participant demographics and symptom data.

Results

Participants reported experiencing a mean of 21 symptoms (range 1–93); fatigue (79.0%), headache (55.3%), shortness of breath (55.3%) and difficulty concentrating (53.6%) were the most common. Symptoms often remitted and relapsed for extended periods of time (duration M = 112 days), longest lasting symptoms included the inability to exercise (M = 106.5 days), fatigue (M = 101.7 days) and difficulty concentrating, associated with memory impairment (M = 101.1 days). Participants reported extreme pressure at the base of the head, syncope, sharp or sudden chest pain, and “brain pressure” among the most distressing and impacting daily life.

Conclusions

Post-acute sequelae of SARS-CoV-2 infection can be characterised by a wide range of symptoms, many of which cause moderate-to-severe distress and can hinder survivors' overall well-being.

Relevance to Clinical Practice

This study advances our understanding of the symptoms of PASC and their health impacts.

SRY gene isolation from teeth for forensic gender identification—An observational study

by Prathibha Prasad, Mohamed Jaber, Dinesh Y., Prathibha Ramani, Abdulrahman Arafat, Abdalla Khairy

Personal identification in forensics is possible with gender determination using DNA (deoxyribonucleic acid) analysis. DNA isolation from teeth samples subjected to extreme temperatures has been shown to predict the gender of the deceased. However, the literature lacks studies on DNA extracted from tooth samples exposed to freezing temperatures. This study aimed to isolate the SRY gene from the extirpated pulp of teeth that were subjected to varying temperatures for gender identification. Thirty teeth with vital pulps, divided into 3 groups were included in the study. Each group consisted of 5 male and 5 female tooth samples. The groups were exposed to diverse environmental factors for three weeks. Group 1: room temperature (R group); Group 2: high temperature (H group) and Group 3: freezing temperature (F group). Later, DNA was isolated from the pulp tissue, and the SRY gene was amplified using PCR (Polymerase Chain Reaction). The Sensitivity and Specificity of the results were analyzed. SRY gene detected in the study samples identified accurate gender with a 46.70% Sensitivity and 93.30% Specificity. Significant difference was found in the correlation between gene expression and gender among the three groups (p = 1.000). The study validates that dental pulp tissue can be a reliable source for DNA extraction. And SRY gene amplification from teeth exposed to diverse environmental conditions. Further investigations are required to validate its application in forensics.

Gene expression signatures of stepwise progression of Hepatocellular Carcinoma

by Manisri Porukala, P. K. Vinod

The molecular pathogenesis of Hepatocellular Carcinoma (HCC) is a complex process progressing from premalignant stages to cancer in a stepwise manner. Mostly, HCC is detected at advanced stages, leading to high mortality rates. Hence, characterising the molecular underpinnings of HCC from normal to cancer state through precancerous state may help in early detection and improve its prognosis and treatment. In this work, we analysed the transcriptomic profile of tumour and premalignant samples from HCC or chronic liver disease patients, who had undergone either total or partial hepatectomy. The normal samples from patients with metastatic cancer/polycystic liver disease/ cholangiocarcinoma were also included. A gene co-expression network approach was applied to identify hierarchical changes: modules, pathways, and genes related to different trajectories of HCC and patient survival. Our analysis shows that the progression from premalignant conditions to tumour is accompanied by differences in the downregulation of genes associated with HNF4A activity and the immune system and upregulation of cell cycle genes, bringing about variability in patient outcomes. However, an increase in immune and cell cycle activity is observed in premalignant samples. Interestingly, co-expression modules and genes from premalignant stages are associated with survival. THBD, a classical marker for dendritic cells, is a predictor of survival at the premalignant stage. Further, genes linked to microtubules, kinetochores, and centromere are altered in both premalignant and tumour conditions and are associated with survival. Our analysis revealed a three-way molecular axis of liver function, immune pathways, and cell cycle driving HCC pathogenesis.

REMAP Periop: a randomised, embedded, multifactorial adaptive platform trial protocol for perioperative medicine to determine the optimal enhanced recovery pathway components in complex abdominal surgery patients within a US healthcare system

Por: Holder-Murray · J. · Esper · S. A. · Althans · A. R. · Knight · J. · Subramaniam · K. · Derenzo · J. · Ball · R. · Beaman · S. · Luke · C. · La Colla · L. · Schott · N. · Williams · B. · Lorenzi · E. · Berry · L. R. · Viele · K. · Berry · S. · Masters · M. · Meister · K. A. · Wilkinson · T.
Introduction

Implementation of enhanced recovery pathways (ERPs) has resulted in improved patient-centred outcomes and decreased costs. However, there is a lack of high-level evidence for many ERP elements. We have designed a randomised, embedded, multifactorial, adaptive platform perioperative medicine (REMAP Periop) trial to evaluate the effectiveness of several perioperative therapies for patients undergoing complex abdominal surgery as part of an ERP. This trial will begin with two domains: postoperative nausea/vomiting (PONV) prophylaxis and regional/neuraxial analgesia. Patients enrolled in the trial will be randomised to arms within both domains, with the possibility of adding additional domains in the future.

Methods and analysis

In the PONV domain, patients are randomised to optimal versus supraoptimal prophylactic regimens. In the regional/neuraxial domain, patients are randomised to one of five different single-injection techniques/combination of techniques. The primary study endpoint is hospital-free days at 30 days, with additional domain-specific secondary endpoints of PONV incidence and postoperative opioid consumption. The efficacy of an intervention arm within a given domain will be evaluated at regular interim analyses using Bayesian statistical analysis. At the beginning of the trial, participants will have an equal probability of being allocated to any given intervention within a domain (ie, simple 1:1 randomisation), with response adaptive randomisation guiding changes to allocation ratios after interim analyses when applicable based on prespecified statistical triggers. Triggers met at interim analysis may also result in intervention dropping.

Ethics and dissemination

The core protocol and domain-specific appendices were approved by the University of Pittsburgh Institutional Review Board. A waiver of informed consent was obtained for this trial. Trial results will be announced to the public and healthcare providers once prespecified statistical triggers of interest are reached as described in the core protocol, and the most favourable interventions will then be implemented as a standardised institutional protocol.

Trial registration number

NCT04606264.

Childhood and adolescent factors shaping vulnerability to underage entry into sex work: a quantitative hierarchical analysis of female sex workers in Nairobi, Kenya

Por: Shah · P. · Kabuti · R. · Beksinska · A. · Nyariki · E. · Babu · H. · Kungu · M. · Jama · Z. · Ngurukiri · P. · The Maisha Fiti Study Champions · Kaul · R. · Kyegombe · N. · Medley · G. F. · Devries · K. · Seeley · J. · Weiss · H. A. · Beattie · T. S. · Kimani · J. · Gwala · Oside · Kamen
Objective

To explore factors associated with early age at entry into sex work, among a cohort of female sex workers (FSWs) in Nairobi, Kenya.

Background

Younger age at sex work initiation increases the risk of HIV acquisition, condom non-use, violence victimisation and alcohol and/or substance use problems. This study aimed to understand factors in childhood and adolescence that shape the vulnerability to underage sex work initiation.

Design

Building on previous qualitative research with this cohort, analysis of behavioural–biological cross-sectional data using hierarchical logistic regression.

Participants and measures

FSWs aged 18–45 years were randomly selected from seven Sex Workers Outreach Programme clinics in Nairobi, and between June and December 2019, completed a baseline behavioural–biological survey. Measurement tools included WHO Adverse Childhood Experiences, Alcohol, Smoking and Substance Involvement Screening Test and questionnaires on sociodemographic information, sexual risk behaviours and gender-based violence. Descriptive statistics and logistic regression were conducted using hierarchical modelling.

Results

Of the 1003 FSWs who participated in the baseline survey (response rate 96%), 176 (17.5%) initiated sex work while underage (

Conclusions

Lower education level and childhood homelessness, combined with sexual violence and sexual risk behaviours in childhood, create pathways to underage initiation into sex work. Interventions designed for girls and young women at these pivotal points in their lives could help prevent underage sex work initiation and their associated health, social and economic consequences.

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