Ronel Roos
University of the Witwatersrand
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Featured researches published by Ronel Roos.
Clinical Rehabilitation | 2011
Susan Hanekom; Rik Gosselink; Elizabeth Dean; Helena van Aswegen; Ronel Roos; Nicolino Ambrosino; Quinette Louw
Objective: To facilitate knowledge synthesis and implementation of evidence supporting early physical activity and mobilization of adult patients in the intensive care unit and its translation into practice, we developed an evidence-based clinical management algorithm. Methods: Twenty-eight draft algorithm statements extracted from the extant literature by the primary research team were verified and rated by scientist clinicians (n = 7) in an electronic three round Delphi process. Algorithm statements which reached a priori defined consensus – semi-interquartile range <0.5 – were collated into the algorithm. Results: The draft algorithm statements were edited and six additional statements were formulated. The 34 statements related to assessment and treatment were grouped into three categories. Category A included statements for unconscious critically ill patients; Category B included statements for stable and cooperative critically ill patients, and Category C included statements related to stable patients with prolonged critical illness. While panellists reached consensus on the ratings of 94% (32/34) of the algorithm statements, only 50% (17/34) of the statements were rated essential. Conclusion: The evidence-based clinical management algorithm developed through an established Delphi process of consensus by an international inter-professional panel provides the clinician with a synthesis of current evidence and clinical expert opinion. This framework can be used to facilitate clinical decision making within the context of a given patient. The next step is to determine the clinical utility of this working algorithm.
Journal of Acquired Immune Deficiency Syndromes | 2014
Ronel Roos; Hellen Myezwa; Helena van Aswegen; Eustasius Musenge
Objective:People infected with the human immunodeficiency virus are at an increased risk of developing ischemic heart disease (IHD); however, the effects of an education and home-based pedometer walking program on risk factors of IHD are not known. Methods:We conducted a 12-month randomized study of an education and home-based pedometer walking program in 84 human immunodeficiency virus–infected individuals with risk factors of IHD. Results:Pedometer step count of the control and intervention groups improved significantly (P = 0.03 for both groups) at 6 months but was not significant at 12 months (P = 0.33 and 0.21, respectively). Significant between-group effects were observed in 6-minute walk test distance (P = 0.01), waist to hip ratio (P = 0.00), glucose (P = 0.00), and high-density lipoprotein (P = 0.01) over the 12-month period. The program did not result in change in high-sensitivity C-reactive protein as it was associated with perceived stress (r = 0.23; P = 0.03), weight (r = 0.28; P = 0.01), body mass index (r = 0.35; P < 0.00), waist (r = 0.28; P = 0.01) and hip circumference (r = 0.28; P = 0.01). Multivariate generalized estimation equation analysis demonstrated an inverse association between interaction and perceived stress (logB = −0.01; 95% confidence interval: −0.02 to −0.01; P <0.00) and body mass index (logB = −0.02; 95% confidence interval: −0.03 to −0.002; P = 0.02) at group level. Conclusion:An education and home-based pedometer walking program improves physical activity levels, and beneficial changes in other IHD risk factors were noted.
International Journal of Evidence-based Healthcare | 2016
Dorothy Shead; Ronel Roos; Benita Olivier; Amadi O. Ihunwo
Review question/objective: This scoping review seeks to collate and describe the body of existing literature pertaining to curricula and pedagogies used in the gross anatomy education of undergraduate physiotherapy students. Specifically, the review questions are as follows: What approaches to gross anatomy curricula and pedagogies used to teach undergraduate physiotherapy students have been documented in available literature? What are the outcomes associated with the various approaches to anatomy curricula and pedagogies used to teach undergraduate physiotherapy students?
African Journal of Primary Health Care & Family Medicine | 2015
Ronel Roos; Hellen Myezwa; Helena van Aswegen
Background Ischaemic heart disease (IHD) is a global health problem and specifically relevant in the African context, as the presence of risk factors for IHD is increasing. People living with the human immunodeficiency virus (HIV)/acquired immune deficiency syndrome (AIDS) (PLWHA) are at increased risk for IHD due to increased longevity, treatment-specific causes and viral effects. Aim To determine the self-perception and behaviour in relation to risk for IHD in a cohort of South African PLWHA. Methods A qualitative study using semi-structured interviews with a card-sort technique was used to gather data from 30 individuals at an HIV clinic in Johannesburg. Descriptive analysis and conventional content analysis were done to generate the findings. Results The median age of the cohort was 36.5 (31.8–45.0) years and they were mostly women (n = 25; 83.3%) who were employed (n = 17; 56.7%) and supporting dependents (n = 26; 86.7%). Fifteen (50%) participants did not perceive themselves at risk of IHD and reported having adequate coping behaviour, living a healthy lifestyle and being healthy since initiating therapy. Twelve (40%) did feel at risk because they experienced physical symptoms and had poor behaviour. Knowledge and understanding related to IHD, insight into own risk for IHD and health character in a context of HIV infection were three themes. Conclusion This study highlights that participants did not perceive themselves to be at risk of IHD due to their HIV status or antiretroviral management. Education strategies are required in PLWHA to inform their personal risk perception for IHD.
The Southern African journal of critical care | 2017
L Van Heerden; H. van Aswegen; S Van Vuuren; Ronel Roos; A Duse
Background . The delivery of aerosolised medication, as performed by nurses and physiotherapists in intensive care units (ICUs), forms an important component of patient care. Objectives. To determine the presence of contamination of nebulisers used within a ventilator circuit; to describe the protocol and clinical practice regarding decontamination and storage of these devices; and to identify micro-organisms colonising contaminated nebulisers and the surrounding air at patients’ bedsides. Methods . A cross-sectional multicentre observational study was conducted, including site and equipment sampling to determine contamination. ICU managers were interviewed to determine the decontamination and storage protocols used for nebulisers in their units. Swabs were taken from nebuliser chambers and streaked onto blood agar plates (BAPs). An air sampler was used to collect air samples from the surrounding bedside environment. The BAPs were incubated for bacterial and fungal contamination. Species of colonies observed in these samples were identified. Results. Sixty-one nebulisers from seven ICUs were sampled (Micro Mist n =37; Aeroneb n =24). Half of the nebulisers (Micro Mist ( n =19, 51.4%));Aeroneb ( n =12, 50%)) and most air samples ( n =60, 98%)) presented with contamination. All participating ICUs reported decontamination and storage protocols, but visual inspection of nebulisers suggested that the protocols were not observed. Nebulisers rinsed with alcohol and left open to the environment to dry had the lowest contamination rates. Coagulase-negative Staphylococcus species (spp.) were mostly found in the surrounding air and Aeroneb samples, and Enterococcus spp. were mostly found in the Micro Mist nebulisers. Conclusion . Although decontamination and storage protocols for nebulisers were in place, nebuliser and air contamination was high, possibly due to poor staff adherence
South African journal of physiotherapy | 2017
Mokgobadibe Veronica Ntsiea; Witness Mudzi; Nicolette Comley-White; Heleen van Aswegen; Benita Olivier; Ronel Roos; Sonti Pilusa; Joanne Potterton; Hellen Myezwa; Natalie Benjamin; V. Naidoo
Background The healthcare sector requires graduates with the ability to confidently assess and manage the majority of the medical conditions seen in hospitals. Objective To establish whether the most prevalent medical conditions treated by physiotherapists in Gauteng (South Africa) state health facilities align with the University of the Witwatersrand (Wits) physiotherapy curriculum. Methods This was a retrospective review of condition-related statistics from physiotherapy departments within the Gauteng province state health facilities. Data from all Gauteng government hospitals that had submitted at least 75% of their physiotherapy condition–related statistics to the provincial statistics coordinator from January 2012 to December 2014 were considered and compared to medical conditions covered in the Wits 2015 physiotherapy curriculum to check if all conditions listed in the Gauteng statistics appeared within the Wits curriculum document. The number of teaching hours for the common conditions was noted to check the emphasis given to these conditions in the curriculum. Results Eighty-three per cent of the hospitals submitted 75% of their monthly statistics. Overall, the most common conditions treated were lower limb fractures (13%) followed by stroke (7.6%) (n = 705 597). Within the neuro-musculoskeletal category, the most common conditions after lower limb fractures were soft tissue injuries (15.1%) (n = 330 511). The most common cardiopulmonary conditions were tuberculosis (24.9%), followed by pneumonia (13.8%) (n = 94 895). The most common neurological conditions were stroke (30.9%) followed by cerebral palsy (17%) (n = 174 024). Within the non-specified categories, the number of intensive care unit (ICU) patients was the highest (23%), followed by sputum induction (21%) (n = 138 187). The most common conditions that were emphasised within the Wits curriculum as indicated by the teaching hours: fractures, 14.5 (66%) of 22 third-year orthopaedics hours; stroke, 30 (73%) of 41 third-year neurology hours; soft tissue injuries, 18 (38%) of 48 fourth-year neuro-musculoskeletal hours; back lesions, 24 (50%) of 48 fourth-year neuro-musculoskeletal hours; and ICU patients, 30 (79%) of 38 fourth-year cardiopulmonary hours. Conclusion The Wits physiotherapy curriculum covers all medical conditions treated by physiotherapists within the Gauteng state health facilities, and overall, the curriculum prepares the students to practise in a variety of situations.
South African journal of physiotherapy | 2017
Liezel Schwellnus; Ronel Roos; V. Naidoo
Background Physiotherapy is included in the management of patients undergoing thoracic surgery. The aim of this study was to describe physiotherapy practice in the management of patients who undergo an open thoracotomy. Methods A cross-sectional study using convenience sampling was undertaken. An electronic self-administered questionnaire was distributed via SurveyMonkey to 1389 physiotherapists registered with the South African Society of Physiotherapy in Gauteng. The data collection period was August and September 2014 and data were analysed descriptively. Results A total of 323 physiotherapists (23.3%) responded to the survey and 141 (10.2%) indicated that they treated patients with open thoracotomies. Preoperative treatment was done by 65 (41.6%) and consisted of teaching supported coughing (92.3%; n = 60), sustained maximal inspiration (70.8%; n = 46) and the active cycle of breathing technique (69.2%; n = 45). One hundred and sixteen (82.3%) respondents treated patients during their hospital stay. Deep breathing exercises (97.6%; n = 83), coughing (95.3%; n = 81), early mobilisation (95.3%; n = 81), upper limb mobility exercises (91.8%; n = 78), chest wall vibrations (88.2%; n = 75) and trunk mobility exercises (85.9%; n = 73) were done frequently. Pain management modalities were less common, for example transcutaneous electrical nerve stimulation (12.9%; n = 11). Post hospital physiotherapy management was uncommon (32.6%; n = 46). Conclusion Physiotherapy related to early mobilisation in hospital is in line with evidence-based practice, but further education is needed regarding the need for physiotherapy post hospital discharge and pain management.
International Journal of Evidence-based Healthcare | 2017
Helena van Aswegen; Ronel Roos
Review objective/question: The objective of this review is to examine and map the range of physical impairments and activity limitations experienced by people infected with tuberculosis (TB). The levels of evidence that are currently available on this topic will also be reported. More specifically, the review questions are: What types of physical impairments and activity limitations have been reported for people infected with TB? What types of rehabilitation strategies are used for people with TB infection to address physical impairments and activity limitations? Findings from this scoping review may inform a systematic review to explore the effectiveness of rehabilitation strategies used to address physical impairments and activity limitations in people with TB infection.
Physiotherapy Theory and Practice | 2016
Jacqui Schewitz; Ronel Roos; Heleen van Aswegen; Samuel O. M. Manda
ABSTRACT Background and Purpose: A head-down tilt position could influence diaphragm excursion due to abdominal content displacement. The purpose of the study was to determine if excursion could be influenced by a head-down tilt position and if this change in excursion alters the diaphragm function. Design: Prospective quasi-experimental study. Participants: Seventy healthy adult students. Intervention: Four head-down tilt positions: 1) 15° (30 seconds); 2) 15° (120 seconds); 3) 30° (30 seconds); and 4) 30° (120 seconds). Outcome Measures: Change in diaphragm excursion was assessed using M-Mode ultrasound and diaphragm function was recorded in terms of the peak expiratory flow rate (PEFR) and thoracic expansion. Data were analyzed using descriptive statistics, Analysis of Variance (ANOVA), Kruskal Wallis and student’s t-test. Results: The cohort consisted of 56 women (80%) and 14 men (20%) with a mean age of 20.7 (±1.7) years and a mean body mass index (BMI) of 23.0 (±3.7) kg/m2. The greatest mean change in the hemi-diaphragm, for both genders measured from rest, was 38.8 (±11.5) mm on the left and 39.4 (±11.9) mm on the right. The greatest stretch occurred after a 30° head-down tilt for 30 seconds for both the right and left hemi-diaphragms in males and right hemi-diaphragm in females. The left hemi-diaphragm in females achieved its maximum stretch after 30° head-down tilt for 120 seconds. No significant changes in thoracic expansion or PEFR were observed but baseline values were less than predicted. Conclusion: Optimal change in hemi-diaphragm excursion was obtained utilizing 30° head-down tilt positions in healthy subjects.
African Journal of Health Professions Education | 2015
Benita Olivier; V. Naidoo; Witness Mudzi; H. van Aswegen; Joanne Potterton; Hellen Myezwa; Ronel Roos; L. Godlwana; Douglas Maleka; S. Mtshali; Veronica Ntsiea; Aimee Stewart; M Romm; C. Humphries; B Watt
Background. Traditionally, physiotherapy practical skills have been assessed by a method that relies on the subjective interpretation of competency by the examiner and lacks the formative benefits of assessment. Objective. To describe and compare student performance and satisfaction and examiner satisfaction with regard to the Objective Structured Practical Examination (OSPE) and traditional mark sheets during the practical skills assessment. Method. Students and examiners taking part in the second-year physiotherapy practical skills test were invited to participate by completing a series of questionnaires. Performance of techniques was marked using both the OSPE and traditional mark sheets. Results. Sixty-seven students and nine examiners participated in the study. Students scored an average of 4.6% (SD ±16.4) better when using the traditional mark sheet. Nonetheless, students and examiners expressed a preference for the OSPE mark sheet. Conclusion. The OSPE mark sheet allows for increased objectivity, as the specific micro-skills are clearly listed and appropriately weighted. This resulted in increased satisfaction, but a decrease in marks obtained. By assessing the effect of implementation of the OSPE method on performance and satisfaction, change in the current situation can be monitored.