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1.
Eur J Orthop Surg Traumatol ; 34(3): 1389-1396, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38194124

ABSTRACT

PURPOSE/AIM: With an ageing population and an increase in fragility fractures of the hip (FFH), the role of an anaesthetist is evolving to include more peri-operative care. A post-anaesthesia high-care unit (PAHCU) should enhance care in post-operative patients. To our knowledge, there are no studies that have investigated the effect of a PAHCU admission on post-operative outcomes after FFH. This study aimed to compare post-operative outcomes of FFH patients admitted to PAHCU versus a standard post-operative orthopaedic ward (POOW). METHODOLOGY: A retrospective cohort study was conducted on adult patients with FFH who underwent surgery between January 2019 and December 2020 at our institution. Data were sourced from electronic medical records. SPSS version 28 was used to analyse data. RESULTS: A total of 231 patients were included. The PAHCU group (n = 35) displayed a higher burden of chronic illness and higher peri-operative risk scores as compared to the POOW group (n = 196). Median time to mobilize (TTM) in PAHCU was 84 h vs. 45 h in POOW group (p = 0.013). Median length of stay (LOS) in PAHCU was 133 h vs. 94 h in POOW (p = 0.001). The in-hospital mortality was 2.9% (n = 1) for PAHCU and 3.6% (n = 7) for POOW (p = 1). The 30-day mortality was 11.8% (n = 4) for PAHCU and 10.1% (n = 19) in POOW. CONCLUSION: PAHCU admission resulted in delayed time to surgery and TTM, together with prolonged LOS, compared to those managed in POOW. However, these mortality rates remained comparable in both groups. This study contributes valuable insights into post-operative care of FFH patients in a resource-poor setting.


Subject(s)
Anesthesia , Femoral Fractures , Femoral Neck Fractures , Hip Fractures , Adult , Humans , Length of Stay , Retrospective Studies , Hospital Mortality , Hip Fractures/surgery , Femoral Neck Fractures/surgery
2.
Article in English | MEDLINE | ID: mdl-35814622

ABSTRACT

Background: Professional quality of life, measured as compassion satisfaction, is a prerequisite for nurses working in intensive care units where patients rely on their care. Nurses who experience compassion satisfaction, or good professional quality of life, engage enthusiastically with all work activities and render quality patient care. In contrast, compassion fatigue eventually leads to disengagement from work activities and unsatisfactory patient outcomes. In this study, we described the demographic factors influencing professional quality of life of intensive care nurses working in public hospitals in Gauteng, South Africa (SA), during the first wave of the COVID-19 pandemic. Objectives: To describe the demographic factors associated with professional quality of life of critical care nurses working in Gauteng, SA. Methods: In this cross-sectional study, we used total population sampling and invited all nurses who had worked for at least 1 year in one of the critical care units of three selected public hospitals in Gauteng to participate. One-hundred and fifty-four nurses responded and completed the ProQol-5 tool during the first wave of the COVID-19 pandemic. Data were analysed using descriptive and inferential statistics. Results: The nurses' average age was 45 years, and 59.1% (n=91) had an additional qualification in critical care nursing. Most of the nurses had a diploma (51.3%; n=79), with a mean work experience of 12.56 years. The main demographic variables that influenced professional quality of life were years of work experience (p=0.047), nurses' education with specific reference to a bachelor's degree (p=0.006) and nurse-patient ratio (p<0.001). Conclusion: Nurses working in critical care units in public hospitals in Gauteng experienced low to moderate compassion satisfaction, moderate to high burnout and secondary traumatic stress, suggesting compassion fatigue. The high workload, which may have been associated with the COVID-19 pandemic, influenced nurses' professional quality of life. Contributions of the study: This study reports on the important problem of compassion fatigue and burnout amongst South African ICU nurses working in the public sector. Associated factors were identified, which should be addressed to improve nurses' wellbeing.

3.
South. Afr. j. crit. care (Online) ; 38(1): 39-42, 2022. figures, tables
Article in English | AIM (Africa) | ID: biblio-1371298

ABSTRACT

Background. Professional quality of life, measured as compassion satisfaction, is a prerequisite for nurses working in intensive care units where patients rely on their care. Nurses who experience compassion satisfaction, or good professional quality of life, engage enthusiastically with all work activities and render quality patient care. In contrast, compassion fatigue eventually leads to disengagement from work activities and unsatisfactory patient outcomes. In this study, we described the demographic factors influencing professional quality of life of intensive care nurses working in public hospitals in Gauteng, South Africa (SA), during the first wave of the COVID-19 pandemic. Objective. To describe the demographic factors associated with professional quality of life of critical care nurses working in Gauteng, SA. Methods. In this cross-sectional study, we used total population sampling and invited all nurses who had worked for at least 1 year in one of the critical care units of three selected public hospitals in Gauteng to participate. One-hundred and fifty-four nurses responded and completed the ProQol-5 tool during the first wave of the COVID-19 pandemic. Data were analysed using descriptive and inferential statistics. Results. The nurses' average age was 45 years, and 59.1% (n=91) had an additional qualification in critical care nursing. Most of the nurses had a diploma (51.3%; n=79), with a mean work experience of 12.56 years. The main demographic variables that influenced professional quality of life were years of work experience (p=0.047), nurses' education with specific reference to a bachelor's degree (p=0.006) and nurse-patient ratio (p<0.001). Conclusions. Nurses working in critical care units in public hospitals in Gauteng experienced low to moderate compassion satisfaction, moderate to high burnout and secondary traumatic stress, suggesting compassion fatigue. The high workload, which may have been associated with the COVID-19 pandemic, influenced nurses' professional quality of life.


Subject(s)
Quality of Life , Critical Care , Pandemics , Compassion Fatigue , COVID-19 , Nurses , Demography
4.
Hum Resour Health ; 19(1): 153, 2021 12 20.
Article in English | MEDLINE | ID: mdl-34930328

ABSTRACT

INTRODUCTION: South Africa is an upper middle-income country with wide wealth inequality. It faces a quadruple burden of disease and poor health outcomes, with access to appropriate and adequate health care a challenge for millions of South Africans. The introduction of large-scale, comprehensive community health worker (CHW) programs in the country, within the context of implementing universal health coverage, was anticipated to improve population health outcomes. However, there is inadequate local (or global) evidence on whether such programs are effective, especially in urban settings. METHODS: This study is part of a multi-method, quasi-experimental intervention study measuring effectiveness of a large-scale CHW program in a health district in an urban province of South Africa, where CHWs now support approximately one million people in 280,000 households. Using interviewer administered questionnaires, a 2019 cross-sectional survey of 417 vulnerable households with long-term CHW support (intervention households) are compared to 417 households with no CHW support (control households). Households were selected from similar vulnerable areas from all sub-levels of the Ekurhuleni health district. RESULTS: The 417 intervention and control households each had good health knowledge. Compared to controls, intervention households with long-term comprehensive CHW support were more likely to access early care, get diagnosed for a chronic condition, be put on treatment and be well controlled on chronic treatment. They were also more likely to receive a social grant, and have a birth certificate or identity document. The differences were statistically significant for social support, health seeking behavior, and health outcomes for maternal, child health and chronic care. CONCLUSION: A large-scale and sustained comprehensive CHW program in an urban setting improved access to social support, chronic and minor acute health services at household and population level through better health-seeking behavior and adherence to treatment. Direct evidence from households illustrated that such community health worker programs are therefore effective and should be part of health systems in low- and middle-income countries.


Subject(s)
Community Health Workers , Population Health , Child , Cross-Sectional Studies , Humans , South Africa , Urban Health
5.
Vet Anim Sci ; 9: 100113, 2020 Jun.
Article in English | MEDLINE | ID: mdl-32734114

ABSTRACT

The agricultural product market is changing from a producer-orientated to a more consumer-orientated market. Consumer rely on the classification system within the red meat types. Different red meat types and carcass classifications influence the prices of red meat. This study was conducted to determine the price dynamics of different red meat carcasses and carcass classes. It was theorised that the different red meat classification classes and number of carcasses sold influence the price and demand of red meats. It was also theorised that specific meat classes have a greater influence on meat prices and demand than others. The results of this study supports the hypothesis that red meat carcass type and specific meat classes within carcass type influence red meat carcass prices. There is a differentiation among classes in terms of the degree to which class influences price, since classes were identified that had no influence on price dynamics of other meat types.

6.
S Afr Med J ; 110(4): 320-326, 2020 Mar 30.
Article in English | MEDLINE | ID: mdl-32657745

ABSTRACT

BACKGROUND: Patients undergoing arthroplasty may have comorbidities that put them at risk of myocardial injury after non-cardiac surgery (MINS). MINS, a new clinical concept that has a different pathophysiology from conventional myocardial infarction, is related to a supply-demand mismatch ischaemia in the perioperative setting. MINS is often a silent event, and the diagnosis relies on cardiac biomarker testing such as troponin T. The incidence is estimated at 40%, with a fourfold increase in morbidity and mortality risk 1 year post surgery. OBJECTIVES: To determine the prevalence of postoperative troponin leak in a single-centre arthroplasty unit in patients with various cardiac risk factors undergoing hip or knee arthroplasty and investigate the differences in troponin T levels between comorbidities and different types of arthroplasty, i.e. total hip replacement (THR), total knee replacement (TKR) and neck of femur (NoF) fracture hip replacement. METHODS: A prospective, cross-sectional study of patients with one or more cardiac risk factors undergoing replacement surgery was conducted from October 2017 to April 2018. Troponin levels of all included patients were recorded on days 1 and 3 post surgery using a high-sensitivity cardiac troponin T assay (Roche hs-cTnT). A level of >15 ng/L is considered abnormal and termed a positive troponin leak, while >100 ng/L is considered suspected acute coronary syndrome (ACS). RESULTS: One hundred and sixty patients (n=66 THR, n=55 NoF hip replacement, n=39 TKR) were included. Sixty-eight patients (42%) had a positive troponin leak, and in 6 of these cases ACS was suspected. The highest prevalence of troponin leak was recorded in patients undergoing NoF hip replacement (62%), followed by TKR (46%) and then THR (24%). Sixty-two patients (38%) had positive troponin levels on day 1 and 53 patients (33%) had positive levels on day 3. Important patient cardiac risk factors were identified in the presence of a positive troponin leak, with ischaemic heart disease, hypertension, diabetes, renal disease, age >65 years and atrial fibrillation being statistically most likely. CONCLUSIONS: Postoperative troponin surveillance is an inexpensive and reliable way to identify patients at risk of MINS and subsequently enhance early detection, medical optimisation and referral strategies. Simple interventions may improve outcomes and contribute to lower ACS rates and the timeous prevention of other complications. The prevalence of MINS in orthopaedic-specific patients in South Africa (SA) and other resource-constrained developing countries is unknown. Our finding of 42% positive troponin leaks raises awareness of this issue, and we recommend routine postoperative troponin surveillance for all arthroplasty units in SA.


Subject(s)
Arthroplasty, Replacement, Hip , Arthroplasty, Replacement, Knee , Femoral Neck Fractures/surgery , Myocardial Ischemia/epidemiology , Postoperative Complications/epidemiology , Troponin T/blood , Acute Coronary Syndrome/blood , Acute Coronary Syndrome/epidemiology , Age Factors , Aged , Atrial Fibrillation/epidemiology , Cross-Sectional Studies , Diabetes Mellitus/epidemiology , Female , Femoral Neck Fractures/epidemiology , Humans , Hypertension/epidemiology , Male , Middle Aged , Myocardial Ischemia/blood , Postoperative Complications/blood , Prospective Studies , Renal Insufficiency, Chronic/epidemiology , Risk Factors , South Africa/epidemiology
8.
Bone ; 133: 115253, 2020 04.
Article in English | MEDLINE | ID: mdl-31987987

ABSTRACT

BACKGROUND: Limited data exist on the incidence of hip fractures in South Africa (SA). We report gender and ethnic specific incidence rates of hip fractures in SA. METHODS: In a multicentre prospective study, conducted in geographically defined municipalities of three provinces in SA, a structured questionnaire was administered to all subjects aged 40 years and over, presenting with a new atraumatic hip fracture, from 1 April 2017 to 31 March 2018. Gender and ethnic specific incidence rates (IR) of hip fractures were calculated using population statistics from Statistics SA. FINDINGS: Of the 2767 subjects enrolled, 1914 (69·2%) were women and 853 (30·8%) were men. The majority of subjects were from the White population (40·9%) followed by those from the African (26·4%), Coloured (18·7%) and Indian (13·9%) populations. Men with hip fractures were significantly younger than women in the total group (69 [IQR 59-79] versus 77 years [IQR 68-84], p < 0·001) and in each ethnic group. White subjects were significantly older (p < 0·0001) and Africans significantly younger (p < 0·0001) than the other ethnic groups. In women, the highest IR was noted in the White population (176·0 per 100,000), followed by that in the Indian (147·7 per 100,000), Coloured (73·2 per 100,000) and African populations (43·6 per 100,000). A similar pattern was seen in men albeit at lower rates, with the highest rate in White men at 76·5 per 100,000. In the total study population and the African population, the IR was higher in men compared to women in subjects under 60 years. In the White population, the IR was higher in men compared to women in the 40-44 years age group. While in the Coloured and Indian populations the IR was higher in men compared to women in the 40-49 years and 45-54 years age groups, respectively. There was an increase in the relative risk ratios with age in the total study population, and in all ethnic groups in both women and men. INTERPRETATION: Hip fractures occur in all ethnic groups in South Africa with higher IRs in the White and Indian populations compared to the Coloured and African populations. Consistent with the published literature, the overall hip fracture IR was higher in women than in men, except in the younger age groups, and increased with age. FUNDING: South African Medical Research Council and the University of KwaZulu-Natal Competitive Research Grant.


Subject(s)
Ethnicity , Hip Fractures , Adult , Female , Hip Fractures/epidemiology , Humans , Incidence , Male , Middle Aged , Prospective Studies , South Africa/epidemiology
9.
Nature ; 573(7773): 235-237, 2019 09.
Article in English | MEDLINE | ID: mdl-31511683

ABSTRACT

The Galactic Centre contains a supermassive black hole with a mass of four million Suns1 within an environment that differs markedly from that of the Galactic disk. Although the black hole is essentially quiescent in the broader context of active galactic nuclei, X-ray observations have provided evidence for energetic outbursts from its surroundings2. Also, although the levels of star formation in the Galactic Centre have been approximately constant over the past few hundred million years, there is evidence of increased short-duration bursts3, strongly influenced by the interaction of the black hole with the enhanced gas density present within the ring-like central molecular zone4 at Galactic longitude |l| < 0.7 degrees and latitude |b| < 0.2 degrees. The inner 200-parsec region is characterized by large amounts of warm molecular gas5, a high cosmic-ray ionization rate6, unusual gas chemistry, enhanced synchrotron emission7,8, and a multitude of radio-emitting magnetized filaments9, the origin of which has not been established. Here we report radio imaging that reveals a bipolar bubble structure, with an overall span of 1 degree by 3 degrees (140 parsecs × 430 parsecs), extending above and below the Galactic plane and apparently associated with the Galactic Centre. The structure is edge-brightened and bounded, with symmetry implying creation by an energetic event in the Galactic Centre. We estimate the age of the bubbles to be a few million years, with a total energy of 7 × 1052 ergs. We postulate that the progenitor event was a major contributor to the increased cosmic-ray density in the Galactic Centre, and is in turn the principal source of the relativistic particles required to power the synchrotron emission of the radio filaments within and in the vicinity of the bubble cavities.

10.
BMC Musculoskelet Disord ; 19(1): 140, 2018 May 09.
Article in English | MEDLINE | ID: mdl-29743063

ABSTRACT

BACKGROUND: A structured approach to perioperative patient management based on an enhanced recovery pathway protocol facilitates early recovery and reduces morbidity in high income countries. However, in low- and middle-income countries (LMICs), the feasibility of implementing enhanced recovery pathways and its influence on patient outcomes is scarcely investigated. To inform similar practice in LMICs for total hip and knee arthroplasty, it is necessary to identify potential factors for inclusion in such a programme, appropriate for LMICs. METHODS: Applying a Delphi method, 33 stakeholders (13 arthroplasty surgeons, 12 anaesthetists and 8 physiotherapists) from 10 state hospitals representing 4 South African provinces identified and prioritised i) risk factors associated with poor outcomes, ii) perioperative interventions to improve outcomes and iii) patient and clinical outcomes necessary to benchmark practice for patients scheduled for primary elective unilateral total hip and knee arthroplasty. RESULTS: Thirty of the thirty-three stakeholders completed the 3 months Delphi study. The first round yielded i) 36 suggestions to preoperative risk factors, ii) 14 (preoperative), 18 (intraoperative) and 23 (postoperative) suggestions to best practices for perioperative interventions to improve outcomes and iii) 25 suggestions to important postsurgical outcomes. These items were prioritised by the group in the consecutive rounds and consensus was reached for the top ten priorities for each category. CONCLUSION: The consensus derived risk factors, perioperative interventions and important outcomes will inform the development of a structured, perioperative multidisciplinary enhanced patient care protocol for total hip and knee arthroplasty. It is anticipated that this study will provide the construct necessary for developing pragmatic enhanced care pathways aimed at improving patient outcomes after arthroplasty in LMICs.


Subject(s)
Arthroplasty, Replacement, Hip/standards , Arthroplasty, Replacement, Knee/standards , Consensus , Delphi Technique , Health Personnel/standards , Perioperative Care/standards , Arthroplasty, Replacement, Hip/methods , Arthroplasty, Replacement, Knee/methods , Humans , Perioperative Care/methods , South Africa/epidemiology
11.
AIDS Care ; 30(5): 596-603, 2018 05.
Article in English | MEDLINE | ID: mdl-29353488

ABSTRACT

According to research children living with HIV experience elevated levels of depression, anxiety, ADHD and disruptive behavioural disorders. Although South Africa's paediatric population that is infected with the human immunodeficiency virus (HIV) is the largest worldwide, little research has been conducted on their mental health challenges. However, attributing high levels of mental health problems solely to their HIV status can be problematic as there may be other contributory factors. This research explored the mental health problems of HIV-infected children and compared these to the mental health problems of their HIV-unaffected peers from similar backgrounds. Data was gathered from two samples of child and caregiver pairs. HIV-infected children (aged 6-12 years) and their caregivers/mothers (n = 54) were recruited from the Kalafong paediatric clinic where they received medical treatment and routine ART. A comparison group of 113 HIV-uninfected children and their uninfected mothers were recruited from primary care clinics in the same community. Caregivers completed the Child Behaviour Checklist (CBCL) to assess children's mental health. Children completed the Self-Description Questionnaire (SDQ-I) and the Revised Children's Manifest Anxiety Scale (RCMAS). The scores of the psychometric sub-scales of the two groups were compared using parametric and non-parametric statistics. HIV-infected children experienced more somatic and affective problems, physiological anxiety, less ADHD and lower self-esteem than HIV-uninfected children in the comparison group, while controlling for age differences. The high levels of mental health problems of both groups of children may be attributed to similar difficult socio-economic circumstances. The fact that most infected children were not aware of their HIV-status could have influenced the results. Mental health services should not be limited to HIV-infected children but should form part of all health care services.


Subject(s)
HIV Infections/epidemiology , HIV Infections/psychology , Mental Disorders/epidemiology , Self Concept , Anxiety Disorders/epidemiology , Attention Deficit Disorder with Hyperactivity/epidemiology , Caregivers , Case-Control Studies , Child , Depression/epidemiology , Female , Humans , Male , Mental Health , Mood Disorders/epidemiology , Mothers , South Africa/epidemiology , Surveys and Questionnaires
12.
Int J Legal Med ; 130(2): 569-74, 2016 Mar.
Article in English | MEDLINE | ID: mdl-25935238

ABSTRACT

There is a dearth of literature on the extent of fetal or newborn abandonment or "dumping" and the medico-legal investigation procedures these cases require. This is despite the fact that these occurrences are a worldwide phenomenon and by definition involve criminal law concerns such as illegal abortion, concealment of birth, murder, or neonaticide, depending on the country concerned. This article contributes to current literature in both respects and provides a retrospective case audit for the period 2004-2008 pertaining to all abandoned newborns and fetuses admitted to the Pretoria Medico-Legal Laboratory (PMLL) in South Africa. Demographic details, scope, and nature of the medico-legal investigation as well as formulation of cause of death were recorded. A total of 289 cases were identified for inclusion in this study, 57% of which were considered to have been non-viable fetuses, while 45 of the viable fetuses were deemed to have been stillborn. These instances involve the crimes of concealment of birth and at times illegal abortion, yet prosecution of these cases are relatively unheard of. Signs of live birth were identified in 38 of the cases in the study. Of these infants, 9 were deemed to have died from injuries they have sustained, and in a further 9 cases, no anatomical cause of death could be identified. Homicidal cases should be brought in cases where death ensued as a result of abandonment; however, it is not known how many cases were prosecuted. A comparatively large number of cases were found to have been admitted to the Pretoria Medico-Legal Laboratory. This is alarming because South African abortion laws are liberal and services are free at point of access in the public health care sector. A substantial percentage of cases of abandoned infants were found to have shown signs of life after birth implying a homicidal manner of death or death by abandonment, but it seems these cases are merely shelved.


Subject(s)
Child, Abandoned/statistics & numerical data , Fetus , Infanticide/statistics & numerical data , Stillbirth/epidemiology , Abortion, Criminal , Anthropometry , Female , Forensic Pathology , Gestational Age , Humans , Infant, Newborn , Live Birth/epidemiology , Male , Medical Audit , Postmortem Changes , Pregnancy , Pregnancy, Unwanted , Retrospective Studies , South Africa/epidemiology
13.
J Sports Med Phys Fitness ; 55(11): 1383-9, 2015 Nov.
Article in English | MEDLINE | ID: mdl-25583229

ABSTRACT

AIM: There is concern over the effect of training on heart function of athletes as recorded by 12-lead electrocardiography (ECG). Although ECG abnormalities with respect to ethnic origin of black athletes from the Caribbean, West Africa and East Africa have been reported, black athletes from southern Africa, specifically participating in different sports, have never been investigated before. The purpose of this study was to analyze the ECG patterns in South African students of Zulu descent, who represented our university in boxing (endurance modality) and body building (resistance modality) at a regional level. METHODS: Fifteen subjects each were assigned to an endurance (E), resistance (R) or control (C) group, respectively. ECG patterns were recorded with a 12-lead ECG. RESULTS: Our subjects indicated no significant differences in ECG patterns in relation to whether they participate in strength or endurance related sport. However, 80% of the endurance group and 67% of the resistance displayed ECG criteria indicative of left ventricular hypertrophy (LVH), group E displays higher R5/S1-wave voltages (E=43.3 mm; R=36.8 mm; C=37.1 mm) as well distinctly abnormal ECG patterns (E=87%; R=73%; C=53%), raising clinical suspicion of structural heart disease. Our cohort presented with non-significant, marked ST-segment elevation (53% of both the E and R groups) and inverted T-waves in 27% of the E group. CONCLUSION: Similar to findings in other ethnic Africans, a large proportion of our Zulu study population displayed ECG criteria indicative of LVH on the evidence of a marked increase of R5/S1-wave voltage and ST/T-segment changes with no differences in relation to whether they participate in strength or endurance related sport.


Subject(s)
Athletes , Electrocardiography , Hypertrophy, Left Ventricular/physiopathology , Physical Endurance/physiology , Students , Universities , Adult , Humans , Hypertrophy, Left Ventricular/epidemiology , Hypertrophy, Left Ventricular/etiology , Incidence , Male , South Africa , Young Adult
14.
Acute Med ; 13(1): 26-8, 2014.
Article in English | MEDLINE | ID: mdl-24616901

ABSTRACT

We present a case report of young man with Type 1 diabetes who developed acute visual loss after initially presenting with diabetic ketoacidosis. The diagnosis of invasive paranasal sinusoidal aspergillosis was made following CT and biopsy. Although uncommon, visual loss is a recognised complication of disseminated aspergillosis and is more likely in immune-compromised patients and those with diabetes. Early investigation with appropriate sinus imaging and involvement of the Ear Nose and Throat team in recommended when patients with diabetes develop acute visual loss in the context of a non-specific infective illness.


Subject(s)
Aspergillosis/complications , Aspergillosis/diagnosis , Blindness/complications , Blindness/microbiology , Diabetes Mellitus, Type 1/complications , Emergency Service, Hospital , Acute Disease , Amphotericin B/therapeutic use , Anti-Bacterial Agents/therapeutic use , Antifungal Agents/therapeutic use , Aspergillosis/drug therapy , Biopsy , Blindness/diagnosis , Caspofungin , Diagnosis, Differential , Echinocandins/therapeutic use , Fatal Outcome , Humans , Lipopeptides , Magnetic Resonance Imaging/methods , Male , Meropenem , Middle Aged , Paranasal Sinuses/diagnostic imaging , Paranasal Sinuses/microbiology , Paranasal Sinuses/pathology , Thienamycins/therapeutic use , Tomography, X-Ray Computed/methods , United Kingdom
15.
Br Poult Sci ; 51(4): 510-4, 2010 Aug.
Article in English | MEDLINE | ID: mdl-20924845

ABSTRACT

1. The effects of different slaughter ages and sex on the yield and quality of economically important end-products of slaughtered ostriches was examined to determine the most economic slaughter age for growing/finishing ostriches. Two batches of 4- and 6-month-old ostriches were assigned to 10 treatment groups and fed ad libitum up to slaughter ages of 8·5, 10·5, 12·5, 14·5 and 16·5 months. Slaughter weight, cold carcase yield, skin surface area, dry skin grade, feather yield and feed intake of ostriches were measured for each age. 2. Cold carcase yields and total feather yields of males were higher than females but yields of other products were similar. 3. Slaughter weight, cold carcase yield, skin surface area, dry skin grade, feather yield and feed intake increased with age with significant differences between most age groups. Cold carcase weight increased by approximately 2·2 kg and skin surface area increased by 3·1 dm³ with each additional month of growth but the quality (grade) of skins and the proportion of first grade skins decreased with increasing age. This, together with an increase in feed intake associated with age to slaughtering should be taken into account when determining the optimal slaughter age. 4. The set of biological variables established in this study can be used to determine the most economical slaughter age under varying market conditions.


Subject(s)
Animal Husbandry , Struthioniformes/growth & development , Age Factors , Animal Feed , Animals , Body Size , Costs and Cost Analysis , Feathers , Female , Male , Sex Factors
16.
Cancer Chemother Pharmacol ; 64(4): 763-8, 2009 Sep.
Article in English | MEDLINE | ID: mdl-19241078

ABSTRACT

PURPOSE: To determine if concomitant administration of docetaxel plus zosuquidar.3HC1 can prolong progression-free survival in patients with metastatic breast cancer. METHODS: A randomized, double-blind, multicenter, placebo-controlled clinical trial comparing docetaxel plus 500 mg zosuquidar.3HCl (DZ) with docetaxel plus placebo (DP). RESULTS: A total of 170 patients were enrolled and randomly assigned to treatment. The median age was 53 years (range, 31-74 years). 81.7% of patients had prior chemotherapy in the adjuvant setting and 18.3% in the neoadjuvant setting. The median progression-free survival time was statistically different between groups [7.2 months (DZ) vs. 8.3 months (DP)]. Once the stratification factor relative to progression following prior chemotherapy was considered, no significant treatment difference existed. CONCLUSION: The combination of zosuquidar.3HCl plus docetaxel is safe. The analysis of efficacy data is complex, but it can be concluded that there is no difference in progression-free survival, overall survival, or response rate in the study as a whole.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Breast Neoplasms/drug therapy , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Breast Neoplasms/pathology , Dibenzocycloheptenes/administration & dosage , Disease-Free Survival , Docetaxel , Double-Blind Method , Female , Humans , Middle Aged , Neoplasm Metastasis , Placebos , Quinolines/administration & dosage , Recurrence , Taxoids/administration & dosage
17.
Int J Cardiol ; 130(1): 87-8, 2008 Oct 30.
Article in English | MEDLINE | ID: mdl-17689713

ABSTRACT

We report the case of a 77 year old with Staphylococcus lugdunensis endocarditis following cardiac catheterisation via a femoral approach. We underline the association between this pathogen and inguinal skin breaks, and discuss the potential diagnostic pitfalls in clinical and laboratory diagnosis.


Subject(s)
Cardiac Catheterization/adverse effects , Endocarditis, Bacterial/microbiology , Staphylococcal Infections/microbiology , Aged , Anti-Bacterial Agents/therapeutic use , Endocarditis, Bacterial/drug therapy , Female , Humans , Staphylococcal Infections/drug therapy , Staphylococcal Infections/etiology
18.
Protein Expr Purif ; 51(2): 260-6, 2007 Feb.
Article in English | MEDLINE | ID: mdl-17084642

ABSTRACT

A novel glucose oxidase (GOX), a flavoenzyme, from Penicillium sp. was isolated, purified and partially characterised. Maximum activities of 1.08U mg(-1)dry weight intracellular and 6.9U ml(-1) extracellular GOX were obtained. Isoelectric focussing revealed two isoenzymes present in both intra- and extracellular fractions, having pI's of 4.30 and 4.67. GOX from Penicillium sp. was shown to be dimeric with a molecular weight of 148kDa, consisting of two equal subunits with molecular weight of 70k Da. The enzyme displayed a temperature optimum between 25 and 30 degrees C, and an optimum pH range of 6-8 for the oxidation of beta-d-glucose. The enzyme was stable at 25 degrees C for a minimum of 10h, with a half-life of approximately 30 min at 37 degrees C without any prior stabilisation. The lyophilized enzyme was stable at -20 degrees C for a minimum of 6 months. GOX from Penicillium sp. Tt42 displayed the following kinetic characteristics: Vmax, 240.5U mg(-1); Km, 18.4mM; kcat, 741 s(-1) and kcat/Km, 40 s(-1)mM(-1). Stability at room temperature, good shelf-life without stabilisation and the neutral range for the pH optimum of this GOX contribute to its usefulness in current GOX-based biosensor applications.


Subject(s)
Glucose Oxidase/isolation & purification , Glucose Oxidase/metabolism , Penicillium/enzymology , Enzyme Stability , Hydrogen-Ion Concentration , Isoelectric Focusing , Kinetics , Molecular Weight , Temperature
20.
Curationis ; 27(4): 81-93, 2004 Nov.
Article in English | MEDLINE | ID: mdl-15712828

ABSTRACT

Loneliness is currently regarded as one of the most common and prevalent problems experienced by adolescents, and it is also observed as a painful, unpleasant and negative experience. South African adolescents also have to face and cope with this predicament daily. The main objective of this study was to establish the perception of adolescents of different cultures regarding loneliness and morality and to investigate the relationship between them. It was also determined which of the independent variables, namely morality, gender, age, mother tongue and ethnicity, contributed significantly to the prediction of loneliness. A total of 714 adolescents from three different secondary schools in the greater Bloemfontein area between the ages of 13 and 17 were selected. Adolescents were used because they are increasingly being confronted with moral issues and because loneliness occurs more commonly during adolescence. The focus was on three ethnic groups, namely Coloured, black and white. Three different questionnaires, namely the Le Roux Loneliness Scale, the Morally Debatable Behaviours Scale and a biographical questionnaire were completed to obtain the necessary data. A significant inverse correlation between loneliness and morality was determined, while morality was identified as the best predictor of loneliness.


Subject(s)
Ethnicity , Loneliness/psychology , Morals , Psychology, Adolescent , Adolescent , Cross-Cultural Comparison , Female , Humans , Language , Male , Predictive Value of Tests , South Africa
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