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1.
S Afr J Surg ; 62(1): 37-42, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38568124

RESUMO

BACKGROUND: In this project, we reviewed our experience in minimal access paediatric surgery (MAPS) at Greys Hospital over the last decade. This information would provide an overview of our experience and would enable us to identify areas where we can strengthen our surgical service and our training programme. METHODS: All surgical patients are captured in the hybrid electronic medical registry (HEMR). All patients aged 18 years or less who underwent a MAPS procedure between 2012 and 2021 were reviewed. Data collected included demographic information, type of surgery, nature of the surgery (elective or emergency), organ system operated on, whether trainees or consultants performed the surgeries and the morbidities and mortalities experienced. Statistical analysis included linear regression and ANOVA, which was performed using Jamovi software. RESULTS: A total of 1 328 MAPS procedures were performed on 994 patients over nine years. There were 359 female and 635 male patients. There was a steady increase in the number of cases performed per year. The age of the patients ranged from one day of life to 18 years, with a median of 8 years. The multiple linear regression results indicated a very strong collective significant effect between the courses performed, the number of consultants, and the MAPS cases performed. The ANOVA test for the individual factors was not statistically significant, but there was a very strong combined correlation with an r-value of 0.87 and a p-value of 0.014 using the overall model test. The consultants' training also directly impacted on the teaching and training of registrars, with progressively more cases being performed by trainees over the years. Postoperative morbidity was reported in 40 patients. The morbidity rate was three per cent. There were no mortalities. CONCLUSION: It is feasible to deliver MAPS to children in our environment. A comprehensive quality improvement strategy has yielded satisfying results. The increased use of MAPS has resulted in a general transfer of skills to junior staff. Ongoing efforts to support the rollout of MAPS in children are warranted.


Assuntos
Hospitais , Melhoria de Qualidade , Criança , Feminino , Humanos , Masculino , Sistema de Registros , África do Sul , Adolescente
2.
S Afr J Surg ; 62(1): 14-17, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38568120

RESUMO

BACKGROUND: Post-traumatic stress disorder (PTSD) is a well-documented psychiatric outcome in patients who experience physical trauma. The phenomenon is less studied in the staff involved in caring for such patients. The aim was to investigate the prevalence of PTSD in visiting international surgeons undergoing elective trauma training and to compare to local and international rates. METHODS: A trauma screening questionnaire (TSQ) survey was conducted among surgeons completing their elective trauma service placements in the Pietermaritzburg Metropolitan Trauma Service. RESULTS: Nineteen surveys were completed (32% response rate). Mean age was 38.9 (SD 6.5). Median postgraduate working experience was 5 (2-10) years. Median time of stay in South Africa was 6 (1-72) months. Compared to preelective experience, there was a five-fold increase in the level of trauma resuscitation experience reported during elective placement. 10.5% of surgeons scored > 5 in the TSQ suggesting probable PTSD. No statistical differences in age, years of prior experience, prior trauma rotation, number of major resuscitations, or length of stay in South Africa were observed in those scoring positive versus negative screening in the TSQ questionnaire. CONCLUSION: Despite being exposed to increased levels of trauma related injury, we observed low rates of positive screening for PTSD in our cohort of visiting international surgeons involved in elective trauma service placements. Investigation of potential protective factors against PTSD in this South African tertiary trauma centre is warranted.


Assuntos
Transtornos de Estresse Pós-Traumáticos , Cirurgiões , Adulto , Humanos , África do Sul/epidemiologia , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Transtornos de Estresse Pós-Traumáticos/etiologia , Centros de Traumatologia
3.
S Afr J Surg ; 62(1): 54-58, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38568127

RESUMO

BACKGROUND: This project analyses all iatrogenic injuries from our department over the last decade and tracks their rate against several interventions. METHODS: All patients who sustained an iatrogenic injury between 2012 and 2022 were reviewed. RESULTS: A total of 946 iatrogenic injuries occurred in 731 patients. Sixty per cent of these patients were male; the median age was 39 years. Of 946 injuries, 574 (60.7%) occurred during an operation, and 372 (39.3%) were not related to an operation. Of the operative injuries 412 (71.8%) were enteric injuries. Of the 372 non-operative iatrogenic injuries 304 (82%) were due to indwelling devices (ID), and 34 (10%) occurred during flexible endoscopy. Fifty-five per cent of the injuries due to ID were due to central venous catheters (CVC) and urinary catheters (UC). CVC contributed toward 31% of all non-operation related iatrogenic injuries. One in 54 admissions (946/51 178) and one in 47 (574 /27 342) patients undergoing an operation sustained an iatrogenic injury. The annual rate of iatrogenic injuries did not decrease over the decade despite a multifaceted approach to reduce them. Interventions included electronic database development, procedural standardisation, and checklist implementation. CONCLUSION: Despite multiple interventions over a decade, our rate of iatrogenic injury remains constant. Ongoing multifaceted efforts to reduce this rate must focus on engendering a culture of safety at all levels of healthcare if we hope to match the enviable safety record of the aeronautics industry.


Assuntos
Aviação , Humanos , Masculino , Adulto , Feminino , Bases de Dados Factuais , Hospitalização , Doença Iatrogênica
4.
Curr Biol ; 34(7): R286-R288, 2024 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-38593774

RESUMO

Tissue folding is a key process for shape generation during embryonic development. A new study reports how a fold in the Drosophila embryo forms by a propagating trigger wave.


Assuntos
Proteínas de Drosophila , Desenvolvimento Embrionário , Animais , Morfogênese , Drosophila , Embrião de Mamíferos , Embrião não Mamífero , Drosophila melanogaster
5.
Proc Natl Acad Sci U S A ; 121(11): e2317017121, 2024 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-38457522

RESUMO

Fluorescent proteins (FPs) are ubiquitous tools in research, yet their endogenous functions in nature are poorly understood. In this work, we describe a combination of functions for FPs in a clade of intertidal sea anemones whose FPs control a genetic color polymorphism together with the ability to combat oxidative stress. Focusing on the underlying genetics of a fluorescent green "Neon" color morph, we show that allelic differences in a single FP gene generate its strong and vibrant color, by increasing both molecular brightness and FP gene expression level. Natural variation in FP sequences also produces differences in antioxidant capacity. We demonstrate that these FPs are strong antioxidants that can protect live cells against oxidative stress. Finally, based on structural modeling of the responsible amino acids, we propose a model for FP antioxidant function that is driven by molecular surface charge. Together, our findings shed light on the multifaceted functions that can co-occur within a single FP and provide a framework for studying the evolution of fluorescence as it balances spectral and physiological functions in nature.


Assuntos
Anêmonas-do-Mar , Animais , Proteínas Luminescentes/metabolismo , Anêmonas-do-Mar/genética , Anêmonas-do-Mar/metabolismo , Antioxidantes/metabolismo , Espectrometria de Fluorescência , Estresse Oxidativo/genética , Proteínas de Fluorescência Verde/metabolismo
6.
Mol Biol Cell ; 35(5): ar69, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38536475

RESUMO

The regulation of the cytoskeleton by multiple signaling pathways, sometimes in parallel, is a common principle of morphogenesis. A classic example of regulation by parallel pathways is Drosophila gastrulation, where the inputs from the Folded gastrulation (Fog)/Concertina (Cta) and the T48 pathways induce apical constriction and mesoderm invagination. Whether there are distinct roles for these separate pathways in regulating the complex spatial and temporal patterns of cytoskeletal activity that accompany early embryo development is still poorly understood. We investigated the roles of the Fog/Cta and T48 pathways and found that, by themselves, the Cta and T48 pathways both promote timely mesoderm invagination and apical myosin II accumulation, with Cta being required for timely cell shape change ahead of mitotic cell division. We also identified distinct functions of T48 and Cta in regulating cellularization and the uniformity of the apical myosin II network, respectively. Our results demonstrate that both redundant and distinct functions for the Fog/Cta and T48 pathways exist.


Assuntos
Proteínas de Drosophila , Drosophila , Animais , Drosophila/metabolismo , Gastrulação , Proteínas de Drosophila/metabolismo , Morfogênese , Mesoderma , Miosina Tipo II/metabolismo , Drosophila melanogaster/metabolismo
7.
Sci Rep ; 14(1): 1479, 2024 01 17.
Artigo em Inglês | MEDLINE | ID: mdl-38233493

RESUMO

Static magnetic stimulation (SMS) is a form of non-invasive brain stimulation that alters neural activity and induces neural plasticity that outlasts the period of stimulation. This can modify corticospinal excitability or motor behaviours, suggesting that SMS may alter the intrinsic excitability of neurons. In mammalian neurons, the axon initial segment (AIS) is the site of action potential initiation and undergoes structural plasticity (changes in length and position from the soma) as a homeostatic mechanism to counteract chronic changes in neuronal activity. We investigated whether the chronic application of SMS (6 and 48 h, 0.5 T) induces structural AIS plasticity in postnatally derived primary cortical neurons. Following 6 h of SMS, we observed a shortening in mean AIS length compared to control, that persisted 24 h post stimulation. In contrast, 48 h of SMS induced an immediate distal shift that persisted 24 h post-stimulation. Pharmacological blockade of voltage gated L/T-type calcium channels during stimulation did not prevent SMS-induced AIS structural plasticity. Our findings provide the foundation to expand the use of chronic SMS as a non-invasive method to promote AIS plasticity.


Assuntos
Segmento Inicial do Axônio , Animais , Axônios/fisiologia , Neurônios/fisiologia , Potenciais de Ação/fisiologia , Plasticidade Neuronal/fisiologia , Canais de Cálcio , Fenômenos Magnéticos , Mamíferos
8.
S Afr J Surg ; 61(2): 100-103, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37381808

RESUMO

BACKGROUND: Identification of at-risk patients with acute pancreatitis (AP) early on in the course of hospital admission remains a challenge. Early identification of these patients can facilitate early referral to tertiary hospitals with skilled multidisciplinary teams (MDTs) and high-dependency health care facilities. This study retrospectively reviewed the ability of the bedside index of severity in acute pancreatitis (BISAP) score and other biochemical markers to predict organ failure and mortality in acute pancreatitis. METHODS: All patients presenting to Grey's Hospital with AP between 2012 and 2020 were included in the study. The BISAP score and other biomarkers were evaluated at presentation in predicting organ failure (≥ 48 hours duration) and mortality. RESULTS: A total of 235 patients were included in the study. A total of 144 (61%) were male and 91 (39%) were female. Alcohol (81%) and gallstones (69%) were the commonest aetiological factors amongst males and females respectively. A total of 42 (29%) males and 10 (11%) females developed organ failure during their hospital stay. The mortality rate was 11.8% for males, 6.59% for females, with an overall mortality of 9.8%. A BISAP score of 2 had a sensitivity of 87.98% and specificity of 59.62% at predicting organ failure (positive predictive value [PPV] = 88.46%, negative predictive value [NPV] = 58.49%, 95% confidence interval [CI], p = 0.001). A BISAP score of 3 and above had a sensitivity of 98.11% and specificity of 69.57% at predicting mortality (PPV = 96.74%, NPV = 80%, 95% CI, p = 0.001). A multivariate analysis of biomarkers bicarbonate, base excess, lactate, urea and creatinine either failed to reach statistical significance or had specificity that is too low to prognosticate organ failure and mortality. CONCLUSION: The BISAP score has limitations at predicting organ failure, but it is a reliable tool for predicting mortality in AP. Due to its simplicity of use, it should be used in resource-constrained settings to triage at-risk patients in smaller hospitals, for early referral to tertiary hospitals.


Assuntos
Pancreatite , Humanos , Feminino , Masculino , Doença Aguda , Pancreatite/diagnóstico , Estudos Retrospectivos , Etanol , Ácido Láctico
9.
S Afr J Surg ; 61(2): 144-149, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37381811

RESUMO

BACKGROUND: There is a paucity of data around corrosive ingestion in South Africa over the last three decades. As such, we set out to review our experience with adult corrosive ingestion in our tertiary gastrointestinal surgical service. METHODS: A retrospective, quantitative review was performed. The parameters analysed were demographics, substance ingestion, ingestion time to first presentation to a healthcare facility, clinical presentation, severity of injury based on endoscopic classification, computed tomography (CT) findings, management and outcomes. Patients presenting within 72 hours with alarm symptoms underwent flexible upper endoscopy and injury severity grading. In patients presenting after 72 hours, a water-soluble contrast study was obtained prior to upper endoscopy. Patients with signs of sepsis, surgical emphysema or physiological instability were referred for urgent CT to exclude oesophageal perforation and mediastinitis. RESULTS: Between January 2012 and January 2019, a total of 64 patients presented with a history of corrosive ingestion - 40 (31%) were males and 24 (19%) females. The average time from ingestion to presentation was 72 hours. In 78% of patients, the agents were intentionally ingested, whilst 22% claimed accidental ingestion. A quarter of the patients (21%) presented to the unit clinically unstable, requiring emergent cardiorespiratory support. Eight (12%) patients required urgent surgical intervention due to the extent of injury. Nine (14%) patients demised during the acute admission. Of this group, three patients had undergone surgical intervention, and six were managed conservatively. Eighty-five per cent of all patients survived their initial admission. CONCLUSION: This paper has highlighted the problem of corrosive ingestion in our setting. It remains a complicated problem to manage associated with significant morbidity and mortality rates. The current trend in the assessment of these patients is increased use of CT scan to assess the extent of transmural necrosis. Our algorithms should change to reflect this contemporary approach.


Assuntos
Cáusticos , Feminino , Masculino , Humanos , Adulto , Cáusticos/toxicidade , Estudos Retrospectivos , África do Sul/epidemiologia , Hospitalização , Ingestão de Alimentos
10.
S Afr J Surg ; 61(1): 56-60, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37052277

RESUMO

BACKGROUND: This paper reviews our experience with management of renal injuries in children and adolescents with a focus on the outcome of non-operative management (NOM). METHODS: Retrospective review of the clinical characteristics, injury grade (I-III, low grade and IV and V high grade), management and outcomes of children ≤ 18 years old with renal trauma presenting to a major trauma centre in South Africa between December 2012 and October 2020. RESULTS: Sixty-one children with a renal injury were identified with a median age of 13 (range 0-18) years. Forty-five were boys; blunt and penetrating mechanisms of trauma were sustained by 55 (90%) and six (10%) children, respectively. The median American Association for the Surgery of Trauma (AAST) grade of renal injury was 3 (range 1-5): this included eight (13%) with grade I, six (10%) with grade II, 17 (28%) with grade III, 20 (46%) with grade IV and 10 (16%) with grade V injuries. Forty children (66%) were successfully managed non-operatively and 21 required a laparotomy; of these six (28%) required nephrectomy. The overall renal salvage rate was 55/61 (90%). Children who required laparotomy were significantly more likely to have sustained a penetrating mechanism of injury (24% vs 2%) and have greater length of hospital stay (median 9 vs 3 days) compared to children managed non-operatively (p < 0.05). Children who underwent a nephrectomy had a significantly greater length of hospital stay (median 9 vs 4 days, p = 0.03); however, their demographics, outcomes developed complications. Two children (3%) died; one managed non-operatively and one with a laparotomy. CONCLUSION: Paediatric renal trauma can be successfully managed non-operatively in over two-thirds of cases in this middle-income country. High grade of renal injury does not absolutely predict need for surgery or nephrectomy and can be managed non-operatively.


Assuntos
Ferimentos não Penetrantes , Masculino , Humanos , Criança , Adolescente , Recém-Nascido , Lactente , Pré-Escolar , Feminino , Ferimentos não Penetrantes/diagnóstico , Ferimentos não Penetrantes/terapia , Escala de Gravidade do Ferimento , Rim , Nefrectomia , Estudos Retrospectivos , Centros de Traumatologia
11.
S Afr J Surg ; 61(1): 30-38, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37052283

RESUMO

BACKGROUND: Music is played in operating theatres (OTs) throughout the world, though controversy around its use exists. While some clinicians may find background music favourable to the theatre mood and a way to augment surgical performance, there is concern raised over its distracting and noise-creating properties. METHODS: In this prospective observational study, between August and December 2021, 110 surgeons and registrars in South Africa responded to a survey investigating the way they use music, and their perceptions and attitudes towards its effect on the OT environment. RESULTS: In this cohort, 66% were male, 29% were consultants and the most common age range was 30-39 years old. Eighty per cent of respondents reported that music was played at least "sometimes", with 74% reporting that they enjoyed it. Easy Listening was the most played and preferred genre followed by Top 40/Billboard hits. Overwhelmingly, respondents reported that background music in the OT improved temperament, focus, mood, and performance, though over a quarter felt it worsened communication. Thirty-one per cent of respondents reported that the choice of music depended on the type of operation, and 70% would turn music down or off during crises. Those who enjoyed music in their spare time were significantly more likely to enjoy music in the OT and perceive it positively. CONCLUSION: This study provides a window into the surgeons' use of and attitudes to intraoperative music in South Africa. While overall, music is viewed positively by this cohort, some concerns remain regarding communication and distractedness. Further interventional and qualitative studies would be useful.


Assuntos
Música , Humanos , Masculino , Adulto , Feminino , África do Sul , Atitude do Pessoal de Saúde , Salas Cirúrgicas , Inquéritos e Questionários
12.
Addiction ; 118(8): 1507-1516, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-36898848

RESUMO

DESIGN: This was a prospective observational study. BACKGROUND AND AIMS: The characteristics of cannabis-involved motor vehicle collisions are poorly understood. This study of injured drivers identifies demographic and collision characteristics associated with high tetrahydrocannabinol (THC) concentrations. SETTING: The study was conducted in 15 Canadian trauma centres between January 2018 and December 2021. CASES: The cases (n = 6956) comprised injured drivers who required blood testing as part of routine trauma care. MEASUREMENTS: We quantified whole blood THC and blood alcohol concentration (BAC) and recorded driver sex, age and postal code, time of crash, crash type and injury severity. We defined three driver groups: high THC (THC ≥ 5 ng/ml and BAC = 0), high alcohol (BAC ≥ 0.08% and THC = 0) and THC/BAC-negative (THC = 0 = BAC). We used logistic regression techniques to identify factors associated with group membership. FINDINGS: Most injured drivers (70.2%) were THC/BAC-negative; 1274 (18.3%) had THC > 0, including 186 (2.7%) in the high THC group; 1161 (16.7%) had BAC > 0, including 606 (8.7%) in the high BAC group. Males and drivers aged less than 45 years had higher adjusted odds of being in the high THC group (versus the THC/BAC-negative group). Importantly, 4.6% of drivers aged less than 19 years had THC ≥ 5 ng/ml, and drivers aged less than 19 years had higher unadjusted odds of being in the high THC group than drivers aged 45-54 years. Males, drivers aged 19-44 years, rural drivers, seriously injured drivers and drivers injured in single-vehicle, night-time or weekend collisions had higher adjusted odds ratios (aORs) for being in the high alcohol group (versus THC/BAC-negative). Drivers aged less than 35 or more than 65 years and drivers involved in multi-vehicle, daytime or weekday collisions had higher adjusted odds for being in the high THC group (versus the high BAC group). CONCLUSIONS: In Canada, risk factors for cannabis-related motor vehicle collisions appear to differ from those for alcohol-related motor vehicle collisions. The collision factors associated with alcohol (single-vehicle, night-time, weekend, rural, serious injury) are not associated with cannabis-related collisions. Demographic factors (young drivers, male drivers) are associated with both alcohol and cannabis-related collisions, but are more strongly associated with cannabis-related collisions.


Assuntos
Acidentes de Trânsito , Consumo de Bebidas Alcoólicas , Dronabinol , Fumar Maconha , Ferimentos e Lesões , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Acidentes de Trânsito/estatística & dados numéricos , Fatores Etários , Consumo de Bebidas Alcoólicas/sangue , Dronabinol/sangue , Fumar Maconha/sangue , Medição de Risco , Fatores de Risco , Fatores Sexuais , Ferimentos e Lesões/epidemiologia
13.
Ann R Coll Surg Engl ; 105(5): 407-412, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-35175869

RESUMO

INTRODUCTION: This study reviews our cumulative experience with the management of patients presenting with a retained knife following an abdominal stab wound (SW). METHODS: A retrospective study was conducted at a major trauma centre in South Africa over a 15-year period from July 2006 to December 2020 including all patients who presented with a retained knife in the abdomen following a SW. RESULTS: A total of 42 cases were included: 37 males (93%) with a mean age of 26 years. A total of 18 knives (43%) were in the anterior abdomen and 24 were posterior abdomen. Plain radiography was performed in 88% (37/42) of cases and computed tomography was performed in 81% (34/42); 90% (38/42) underwent extraction in the operating theatre. Laparotomy was performed in 62% (26/42). Of all the laparotomies performed, 77% (20/26) were positive for intra-abdominal organ or visceral injury. Overall morbidity was 31%. There were two mortalities (5%). Laparotomy was less commonly required for the posterior abdomen (33% (8/24) vs 100% (18/18), p<0.001). For retained knives in the anterior abdomen, 72% (13/18) of the laparotomies were positive for intra-abdominal organ or visceral injury. For the posterior abdomen, 7 of the 8 (88%) were positive for intra-abdominal organ or visceral injury. There were no differences in the need for intensive care unit admission, length of hospital stay, morbidities or mortalities. CONCLUSIONS: Uncontrolled extraction of a retained knife in the abdomen outside of the operating theatre must be avoided. Retained knives in the anterior abdomen usually require formal laparotomy, but this is generally not required for posterior abdomen.


Assuntos
Traumatismos Abdominais , Ferimentos Perfurantes , Masculino , Humanos , Adulto , África do Sul/epidemiologia , Centros de Traumatologia , Estudos Retrospectivos , Ferimentos Perfurantes/epidemiologia , Ferimentos Perfurantes/cirurgia , Traumatismos Abdominais/epidemiologia , Traumatismos Abdominais/cirurgia , Abdome , Laparotomia
14.
bioRxiv ; 2023 Dec 22.
Artigo em Inglês | MEDLINE | ID: mdl-38187543

RESUMO

The movements that give rise to the body's structure are powered by cell shape changes and rearrangements that are coordinated at supracellular scales. How such cellular coordination arises and integrates different morphogenetic programs is unclear. Using quantitative imaging, we found a complex pattern of adherens junction (AJ) levels in the ectoderm prior to gastrulation onset in Drosophila. AJ intensity exhibited a double-sided gradient, with peaks at the dorsal midline and ventral neuroectoderm. We show that this dorsal-ventral AJ pattern is regulated by epidermal growth factor (EGF) signaling and that this signal is required for ectoderm cell movement during mesoderm invagination and axis extension. We identify AJ levels and junctional actomyosin as downstream effectors of EGFR signaling. Overall, our study demonstrates a mechanism of coordination between tissue folding and convergent extension that facilitates embryo-wide gastrulation movements.

15.
S Afr J Surg ; 61(4): 11-15, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38450690

RESUMO

BACKGROUND: Indwelling devices (IDs) are ubiquitous in modern healthcare and may often be associated with morbidity. This paper investigates adverse events related to IDs in surgical patients, which are generally placed into patients either to administer therapy, manage outputs or for specific therapeutic benefit. METHODS: A retrospective electronic database-based assessment of all adverse events relating to IDs was undertaken from December 2012 to August 2021. All events were categorised by device type, event type, and event severity. RESULTS: A total of 11 130 morbidities were captured over the study period. Of those, 2 195 entries pertained to an ID with 2 402 reported adverse events affecting 1 592 patients. Two-thirds occurred in males and injuries occurred in patients age ranging from eight days to 93 years, with an average age of 36 years. The most frequently implicated devices were surgical drains (including intercostal chest drains), accounting for 491 (20.44%) of adverse events. Central venous catheters (CVCs) and intravenous cannulae were involved in 374 (15.57%) and 332 (13.83%) events, respectively. Unplanned removal (346, 13.91%), output not measured (319, 12.82%), injury (314, 12.62%), and blockage (279, 11.21%) were the most common error types. The majority of adverse events were considered minor, however 27 (1.1%) patients experienced organ dysfunction as a result of an ID-related adverse event, and seven (0.3%) died. CONCLUSIONS: Morbidity related to IDs in surgical patients is a relatively frequent occurrence. Standardisation of ID insertion and care, staff education, and improvements in communication have been identified as the most important strategies by which we can limit error-associated morbidity in patients with IDs.


Assuntos
Estudos Retrospectivos , Masculino , Humanos , Adulto , Bases de Dados Factuais
16.
S Afr J Surg ; 60(4): 259-267, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36477055

RESUMO

BACKGROUND: Technology in the form of electronic record systems and prescriptions have been touted as a potential solution to human error. In South Africa, a middle-income country where health facilities have large variations in technological capacity, prescription errors can be complex and varied. We evaluated different prescribing methods to find if the increased use of technology in prescriptions will assist in reducing error rates. METHODS: A retrospective, non-randomised study compared prescriptions, error rates and types in four hospitals with different prescribing methods: these were handwritten, ink stamp, tick-sheet and electronic prescriptions. A modern human error theory data collection tool was designed which included patient complexity. Cataract surgery was chosen as the single common procedure. RESULTS: One thousand six hundred and sixty-one individual scripts had 1 307 prescription errors. Increasing patient complexity was not an indicator of error rate. Handwritten and tick-sheet prescriptions had the fewest errors (49% and 51%, respectively). Electronic (96%) and ink stamp scripts (101%) had almost twice as many errors as handwritten scripts (p < 0.001) mainly due to systemic inbuilt errors. CONCLUSION: The application of increasing degrees of technological complexity does not automatically reduce error rate. This is especially apparent when technology is not integrated into human factors engineering and persistent critical assessment.


Assuntos
Prescrições , Tecnologia , Humanos , Estudos Retrospectivos , África do Sul
17.
S Afr J Surg ; 60(4): 278-283, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36477058

RESUMO

BACKGROUND: Geriatric injuries comprise a significant burden in the developed world but much less are known in the developing world setting. This study aims to review our experience of geriatric injuries with a focus on interpersonal violence (IPV) managed at a major trauma centre in South Africa. METHODS: This was a retrospective study on all patients who were aged > 65 years admitted to our trauma centre from January 2013 to December 2020, based in Pietermaritzburg, South Africa. RESULTS: Over the 8-year study period, 323 cases were included (62% male, mean age 72 years). Mechanism of injury: 80% blunt, 16% penetrating and 4% others. The median injury severity score (ISS) was 9. The median Charlson comorbidity index (CCI) for all 323 cases was 3. Diabetes (n = 53) was the most prevalent comorbidity which was followed by pulmonary disease (n = 23), cerebral vascular accidents (n = 16) and myocardial infarction (n = 15). Fifteen patients were on antiretroviral therapy (5%). Twenty-four per cent required surgical intervention. Eight per cent of cases experienced one or more complications. Twenty-five per cent (80/323) were related to IPV, 61% (49/80) of these were penetrating injuries and the remaining 31 cases were blunt injuries. Of the 49 cases of penetrating injuries, 33 were gunshot wounds (GSWs) and 16 were stab wounds (SWs) (1 GSW and 2 SWs were self-inflicted and were not included in IPV). Those cases that resulted from IPV were significantly more likely to require operative intervention, experience complications and longer lengths of hospital stay. Geriatric patients had poorer outcomes than non-geriatric patients and rural geriatric patients had worse outcomes than urban geriatric patients. CONCLUSION: Although the burden of geriatric trauma in South Africa appears to be relatively low, it is associated with significant morbidity and mortality. Trauma from interpersonal violence is especially common and is associated with significantly worse outcomes than that of non-interpersonal violence-related trauma. Elderly rural trauma victims have worse outcomes than their urban counterparts.


Assuntos
Ferimentos por Arma de Fogo , Humanos , Masculino , Idoso , Feminino , Estudos Retrospectivos , África do Sul/epidemiologia , Violência
18.
S Afr J Surg ; 60(4): 288-292, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36477060

RESUMO

BACKGROUND: The current recommendation for the management of penile cancer is that all patients with palpable groin nodes should undergo a routine lymph node dissection (LND). This study reviews our yield from LND in patients with palpable lymph nodes (LNs) and penile cancer. METHODS: All patients with a penile cancer, who presented to the urology departments of St Aidan's and Grey's hospitals in KwaZulu-Natal province (KZN) were reviewed. Clinical data records and histological reports of all the patients who underwent a penectomy and inguinal lymph node dissection (ILND) were analysed. RESULTS: A total of 93 cases of penile cancer were managed between 2014 and 2019. Of this total overall cohort, 38 patients had palpable groin nodes and underwent a bilateral ILND. The majority (84%) of these patients were human immunodeficiency virus (HIV) positive and none were circumcised. Tumour grade was mostly grade II (84%), and tumour size was an average of 6.2 cm with a range from 1.5 to 12 cm. The overall incidence of metastatic inguinal lymph nodes (ILNs) in the group undergoing dissection was 23.7%. In the remainder there was only reactive lymphadenopathy. CONCLUSION: ILND performed in patients with penile cancer and bilateral palpable ILN in our setting has a low yield. This might be a reflection on our high rate of HIV. Local validation of international cancer guidelines is essential prior to adopting them in the South African context.


Assuntos
Carcinoma de Células Escamosas , Infecções por HIV , Neoplasias Penianas , Humanos , Masculino , Neoplasias Penianas/cirurgia , África do Sul , Excisão de Linfonodo , Carcinoma de Células Escamosas/cirurgia
19.
S Afr J Surg ; 60(4): 300-304, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36477062

RESUMO

BACKGROUND: TThis study is a survey amongst surgical trainees in South Africa (SA) designed to document their exposure to laparoscopic appendicectomy (LA) and their perceptions about the procedure and to identify possible barriers to its uptake. METHODS: A structured survey was developed using a combination of quantitative and qualitative questions designed to determine the clinical exposure of surgical trainees to laparoscopic appendectomy and then probe possible factors limiting their access to the procedure. A questionnaire was created online, and a link was distributed to various surgical trainees in Southern Africa. A list of trainees was obtained from the Surgreg Training Association of South Africa (STA). RESULTS: One hundred and thirty-two (47%) trainees completed the survey out of an estimated 280 general surgery registrars. Ninety-five (72%) were male and 37 (28%) were female respondents. Their median age was 31 years (25-36). There were 14 (11%) year-1 and 21 (16%) year-2, 32 (24%) year-3, 37 (28%) year-4 and 28 (21%) year-5 trainees. The breakdown according to region was area 1 (inland and central) 47 (36%), area 2 (western seaboard) 12 (9%) and area 3 (eastern seaboard) 73 (55%). Forty-three (33%) respondents experienced face-to-face teaching on how to perform a LA. Forty-two (32%) had exposure to laparoscopic simulators. Respondents reported a general lack of experience in performing this procedure. Sixty-nine (52%) had performed this procedure without a senior (i.e., solo) and 13 (10%) had only assisted a senior to perform this procedure. Seventy-four (56%) respondents felt confident performing a LA independently. One hundred and thirteen (86%) respondents expected to be taught this procedure. One hundred and five respondents (80%) were keen to learn to perform LA. One hundred and five respondents (80%) stated that they would be interested in attending an online course on LA. The respondents felt that the following were the significant barriers to performing LA: resource constraints 49 (37%) and time constraints 46 (35%). Thirty per cent of respondents (22) in area 3 reported a reluctance by seniors to teach the procedure. CONCLUSION: There appears to be a lack of exposure to and confidence with LA amongst South African surgical trainees. This implies a deficiency in formal surgical training programmes. Addressing this deficiency will require innovative solutions.


Assuntos
Apendicectomia , Laparoscopia , Adulto , Feminino , Humanos , Masculino , África do Sul
20.
S Afr J Surg ; 60(4): 321-323, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36477069

RESUMO

SUMMARY: A 22-year-old male presented following a precordial stab. He was haemodynamically and metabolically normal. Initial investigations did not reveal pericardial fluid or haemothorax. At diagnostic laparoscopy, we encountered haemoperitoneum and a diaphragmatic injury through which the heart was visible. After pericardial washout, laparoscopic repair was effected. This case highlights a potential problem with extended focused assessment with sonography in trauma (eFAST) in that it will only be positive if there is an accumulation of pericardial fluid. It also confirms the utility of diagnostic laparoscopy for penetrating left thoracoabdominal injuries and shows that principles of open surgery can be safely applied laparoscopically in select patients.


Assuntos
Traumatismos Cardíacos , Humanos , Adulto Jovem , Masculino , Achados Incidentais
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