Publications by authors named "Nel D"

Background: Globally, there is suboptimal coverage of antiretroviral treatment to treat and prevent HIV. It is crucial for individuals to know their partner's HIV status so they may use all appropriate and available prevention tools. For sexual minority men in South Africa, a population known to face intersecting forms of marginalization including a disparate burden of HIV incidence, there are challenges to status sharing.

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Background: Workplace-based assessment (WBA) is being introduced across postgraduate training in South Africa. This study was undertaken to inform the selection of the core procedures for WBA, by determining the most frequently performed procedures in general surgery practice. These findings may also assist academic centres undertaking curriculum review to determine whether or not they are training surgeons who are competent to meet the current local needs of society.

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Introduction: Training medical students requires objectives that are often translated into frameworks of competencies. Since the introduction of entrustable professional activities (EPAs), these tasks or 'units of professional practice', originally conceived for postgraduate training, define what residents must be prepared to do unsupervised. Nowadays, EPAs are also applied to undergraduate training, with the prospect of entering residency.

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Background: In South Africa (SA), data on the incidence of thyroid cancer is limited. Papillary thyroid carcinoma is by far the most common malignancy in developed countries; however, a preponderance of follicular thyroid cancer in developing countries, despite iodized salt, has been observed. The aim of this study was to describe the national landscape of thyroid cancer in SA with reference to pathological subtypes, surgical outcomes, and treatments offered.

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Background: Key populations (KP), including men who have sex with men (MSM), female sex workers (FSW), and transgender women (TGW), experience a disproportionate burden of HIV, even in generalized epidemics like South Africa. Given this disproportionate burden and unique barriers to accessing health services, sustained provision of care is particularly relevant. It is unclear how the COVID-19 pandemic and its associated restrictions may have impacted this delivery.

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Objective: To provide an overview of the current use of Entrustable Professional Activities (EPAs) in postgraduate general surgery training internationally.

Background: Entrustable Professional Activities (EPAs) were introduced to connect clinical competencies and the professional activities to be entrusted to trainees on graduation. The popularity of EPAs as a framework for assessment is growing globally, including in general surgery.

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Purpose: Quality of life (QoL), appetite, cachexia, and biomarkers [albumin, hemoglobin (Hb), neutrophils, lymphocytes, platelets, C-reactive protein (CRP), tumor necrosis factor alpha (TNFα), interleukin 6 (IL-6), interleukin 8 (IL-8), C-X-C motif chemokine ligand 5 (CXCL5) and citrullinated histoneH3 (H3Cit)] were compared for 40 cases with advanced cancer and 40 healthy controls. Baseline differences and significant relationships were explored for biomarkers with QoL, appetite, and cachexia.

Methods: In a prospective case-control, age and sex matched study, the European Organisation for the Research and Treatment of Cancer Quality of Life-C30 questionnaire (EORTC-QLQ-C30) for QoL, the Functional Assessment of Anorexia and Cachexia Therapy assessment (FAACT A/CS-12) for appetite, and a five-factor cachexia assessment tool for cachexia assessment were performed.

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Purpose: Emerging biomarkers of cancer cachexia and their roles in sarcopenia and prognosis are poorly understood. Baseline assessments of anthropometrics, sarcopenia, cachexia status and biomarkers of cachexia were measured in patients with advanced cancer and healthy controls. Thereafter, relationships of the biomarkers with cachexia and sarcopenia were explored.

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Aims: To compare macro- and microscopic features of the placenta with the pulsatility index (PI) of the uterine (UtA), umbilical (UA) and middle cerebral arteries at 20-24- and 34-38-weeks' gestation, and with birthweight z-scores (BWZS).

Methods: Recruitment for the Safe Passage Study, which investigated the association of alcohol and tobacco use with stillbirth and sudden infant death syndrome, occurred from August 2007 to January 2015 at community clinics in Cape Town, South Africa. The population represents a predominantly homogenous population of pregnant women from a low socioeconomic residential area.

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In South Africa, HIV prevalence for gay, bisexual, and men who have sex with men (GBMSM) is as high as 49.5%, yet only 25.7% are taking treatment, resulting in transmission risk between partners and the need for dyadic interventions for men in relationships.

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Objective: Before proceeding with local implementation of competency-based medical education-related assessment practices designed and evaluated in the Global North, we sought to challenge the assumption that this would be perceived as both necessary and acceptable in our context where training and assessment is based on a traditional, knowledge-focused approach. The aim of this study was to determine the perspectives of general surgery trainees and consultants towards the assessment of competence, how this has been achieved previously, and how it should be performed in the future at the University of Cape Town (UCT), South Africa.

Design: Semi-structured interviews were conducted with consultants and trainees.

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Background: Trauma-induced coagulopathy (TIC) is a complex multifaceted process which contributes to higher mortality rates in severely injured trauma patients. Thromboelastography (TEG) is effective in detecting TIC which assists in instituting goal-directed therapy as part of damage control resuscitation.

Methods: This retrospective study included all adult patients over a 36-month period with penetrating abdominal trauma who required a laparotomy, blood products and admission for critical care.

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Background: Sentinel lymph node biopsy (SLNB) is performed for staging and prognostication of breast cancer (BC) in cases with a clinically and radiologically negative axilla. Using blue dye and a radioactive colloid injection is considered the gold standard for SLNB. This study aims to evaluate the SLNB outcomes before and after the introduction of Sentimag at an academic breast unit.

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Article Synopsis
  • - The competency-based medical education (CBME) movement is growing in postgraduate surgical training, highlighting the need for effective implementation using Entrustable Professional Activities (EPAs) to link learners' competencies with professional tasks.
  • - This scoping review will analyze the application of EPAs in general surgery from 2005 to 2022, identifying existing research and gaps through an extensive review of peer-reviewed and grey literature across various databases.
  • - The review has been approved by the University of Cape Town's ethics board and will aim to publish its findings to enhance understanding and application of EPAs in surgical education.
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Background: There is a need to accurately identify pregnant women at risk for preterm birth as early as possible. Recent developments in technology enable the recording of uterine electrical activity (electrohysterogram) from the anterior abdominal wall in a non-invasive way.

Objective: To investigate whether uterine activity recorded under resting conditions at a gestational age of 34 weeks could identify a risk of preterm birth.

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Background: Globally, fiscal measures are deemed effective in combating the obesity epidemic at population level. A health promotional levy (HPL) on sugar sweetened beverages (SSBs) was implemented in April 2018 in South Africa to reduce sugar consumption.

Design And Methods: This cross-sectional, descriptive study investigated consumers' understanding and opinion of the HPL, and impact on consumption of SSBs.

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Background: Black sexual minority men (SMM) ages 30 and older are under-represented in HIV studies in sub-Saharan Africa, despite being at increased risk of HIV infection and contributing to potential onward HIV transmission. To better understand the social and sexual lives of older Black South African SMM, we conducted in-depth interviews with SMM who were > 30 years old.

Methods: From March-September 2016, we recruited a convenience sample of 37 SMM ages 30 and older by partnering with an LGBTQ+ organization in Tshwane, Pretoria.

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Objective: To determine the value of quantifying accelerations of the fetal heart rate (FHR), as collected non-invasively during pregnancy, as a proxy for fetal movements.

Study Design: The study consists of a prospective collection of research material with retrospective analyses of the collected fetal electrocardiograms (ECGs), done in a homogeneous population in a low socioeconomic residential area of Cape Town, South Africa, as part of the Safe Passage Study. Recruitment and follow-up were done from August 2007 to August 2016.

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A palpable breast lump is a common presentation of breast disease to a general practitioner. Fortunately, investigation of most of these lumps will lead to a benign diagnosis. It is essential to have a clear and systematic approach when investigating a palpable breast lump to avoid over investigation with the resultant increase in healthcare cost and anxiety.

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Background: Antenatal substance use is a significant public health concern in South Africa (SA). Information on smoking, drinking and drug use during pregnancy was collected prospectively for the Safe Passage Study of the PASS (Prenatal Alcohol in Sudden infant death syndrome and Stillbirth) Network.

Objectives: Data from 4 926 pregnant women in a community near Tygerberg Academic Hospital, Cape Town, were examined to determine whether associations between different substance use groups and postnatal infant outcomes at birth and 1 year were significant.

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The COVID-19 pandemic has resulted in a massive backlog of elective cases. Delays in the provision of "elective" surgical care have dire consequences for the patient: progression of disease and comorbidities, higher complication rates, and lower overall survival. Delays in elective surgery also have significant consequences for the health system: added emotional strain on healthcare workers, a reduction in training opportunities, increased costs, and increased inequality in health-service provision.

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With increasing emergence of antimicrobial resistant bacteria (ARB) and the risk this poses to public health, there are growing concerns regarding water pollution contributing to the spread of antimicrobial resistance (AMR) through inadequate amenities and the rapid rate of urbanization. In this study, the impact of different anthropogenic factors on the prevalence of AMR in the urban water cycle in Stellenbosch, South Africa (SA) was examined. Carbapenem, colistin, gentamicin and sulfamethoxazole resistant Gram-negative bacteria were recovered by selectively culturing aqueous, biofilm and sediment samples from sites impacted to varying degrees by informal settlements, residential, industrial, and agricultural activities, as well as a municipal wastewater treatment works (WWTW).

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Introduction: Placental pathology is an important contributor to the understanding of preterm birth and reveals major differences between spontaneous preterm birth (SPTB) and iatrogenic preterm birth (IPTB). The aim of this study was to investigate these relationships.

Methods: Research midwives collected placentas from 1101 women with singleton pregnancies who were enrolled in the Safe Passage Study.

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