A South African central hospital's experience with malignant colorectal obstruction

BACKGROUND

The spectrum and outcome of colorectal cancer (CRC) presenting with obstruction is not well studied in low- to middle-income countries (LMIC) and could have implications for health policy. This study aimed to address this deficit in an LMIC setting.

METHODS

A retrospective analysis was conducted of patients with large bowel obstruction, during the period 2000-2019 from the prospective Inkosi Albert Luthuli Central Hospital (IALCH) CRC registry data. Data analysed included the site of CRC, tumour differentiation, management of patients with obstructive CRC, resection margins post resection, oncological management and reasons for failure to receive oncological therapy. Patient follow-up and recurrence were recorded.

RESULTS

Malignant obstruction from CRC occurred in 510 patients (20% of the CRC registry). Median age at presentation was 57 years (IQR 48-67). One hundred and seventy-six (34.5%) and 135 (26.5%) had stage III and IV disease respectively. Moderately differentiated cancer was seen in 335 (65.6%). Management was resection (370; 72.5%), diverting colostomy (123; 24.1%) and stent insertion (55; 10.8%). Twenty-one patients (5.7%) had positive resection margins. Recurrence occurred in 34 patients (6.7%), all of whom had initially undergone resection, giving a recurrence rate of 9.8% in those receiving surgery. Median disease-free interval for patients developing recurrence was 21 months (IQR 12-32).

CONCLUSION

One in five patients with CRC presented with obstruction. These patients were younger than in high incomecountry (HIC) series. Over 70% underwent resection. Stomas were used twice as frequently as stents to relieve the obstruction, a finding that is the reverse of that in HICs.

The clinicopathological spectrum and treatment outcomes in metastatic colorectal cancer in the KwaZulu-Natal province of South Africa

BACKGROUND

In high-income countries (HICs) 17-20% of colorectal cancer (CRC) patients have metastatic CRC (mCRC) at the time of diagnosis, of which 10-25% are or become resectable, and a further 4-11% of patients will develop metachronous metastases. The study aimed to establish the prevalence and pattern of metastatic CRC to document treatment outcomes in KwaZulu-Natal (KZN), and to compare results to international norms.

METHODS

The study population comprised patients with mCRC presenting between 2000 and 2019. Demographics, primary tumour site, spectrum of metastatic disease and resection rate were assessed.

RESULTS

MCRC occurred in 33% of the CRC patient population. Eight hundred and thirty-six patients had metastatic disease, comprising Africans (325, 38.8%), Indians (312, 37.3%), Coloureds (37, 4.4%) and Whites (161, 19.2%). Six hundred and fifty-four patients (79%) had synchronous metastases and 182 patients had metachronous metastases (21%). Single organ metastases occurred in 596 patients (71.2%) (M1A) and multiple organ metastasis occurred in 240 patients (28.7%) (M1B). Metastases occurred in the liver (613), lung (240) and peritoneum (85). Fifty-two patients (6.2%) underwent resection of their metastases.

CONCLUSION

The prevalence of stage IV CRC in our setting is at the upper limit of international norms. mCRC occurred in 33%, with similar proportions in all races. Resection rate for metastases is low.

Thirteen-year audit of the management of anorectal fistulae in a tertiary colorectal unit

BACKGROUND

Persistent anorectal fistulae are referred for assessment in the Durban Metropolitan area to the colorectal unit at the tertiary hospital. This audit aimed to report the assessment and management of these fistulae to benchmark the outcomes from these approaches at a South African tertiary colorectal unit.

METHODS

Retrospective analysis of prospectively collected data of patients with anorectal fistulae over a 13-year period at a tertiary referral centre. Data analysed included demographics, clinical presentation, comorbidity, management and outcome. Study outcomes measures were healing time and secondary outcome measures were complications of surgery.

RESULTS

One hundred and thirty-three patients (median age 44 and M:F ratio 2.8:1) with 206 fistulae were accrued. The initial assessment and diagnostic procedures included insertion of seton (126), fistulectomy (14), and fistulotomy (65). Definitive procedures included two-stage seton fistulotomy (43), ligation of the inter-sphincteric fistula tract (LIFT) procedure (39), modified Hanley procedure (17), and mucosal advancement flap (5). One patient had no surgery and nine did not undergo a definitive procedure. Additional procedures included anal sphincter reconstruction (2) and repair of rectovaginal fistula (2). Residual anal incontinence occurred in 13.5%. The failure rate was 6% and healing occurred in 94%. The median healing time was 8 months after the initial surgery and 4 months following the definitive procedure.

CONCLUSION

The fistula healing rate overall was 94% and was associated with an incontinence rate of 13.5%.

Quantifying the relationship of HIV infection with clinicopathological spectrum and outcome among patients with colorectal cancer in a South African population

Introduction

Literature is limited on HIV and colorectal cancer (CRC) in sub-Saharan Africa despite it being the epicentre of the HIV epidemic,

Purpose

To compare clinicopathological features and outcome of CRC in HIV-negative and HIV-positive patients.

Methods

Retrospective analysis of a prospective CRC database. Demographic details, HIV status, anatomical site, disease stage, treatment and follow-up were documented.

Results

Of 715 patients with CRC, 145 and 570 tested positive and negative respectively for HIV. Median age was 45 (IQR 36–53 and 57 (IQR 45–66) years among HIV-positive and HIV-negative patients respectively (p<0.0001). Tumour differentiation differed between the two groups (p=0.003) but staging was not different (p=0.6). Surgical resection rate was 52% for HIV-positive patients versus 59% for HIV-negative patients (p=0.07). Median follow-up was 9 (IQR 2–20.5) months for HIV-positive patients and 12 (IQR 6–29) months for HIV-negative patients (p=0.154). Recurrence rate was 14.7% among HIV positive patients and 6.8% in HIV negative patients (p=0.089).

Conclusion

When compared with HIV-negative patients, HIV-positive patients with CRC presented at a younger age and tended to have lower surgical resection rates. There was no difference between the two groups with CRC in terms of anatomical sub-site distribution, disease staging and recurrence rates.

A South Africa tertiary centre experience with redo mitral valve replacement

BACKGROUND

Severe cardiac failure from mechanical mitral valve thrombosis due to poor warfarin control is a major cause of emergency redo mitral valve replacement (MVR) in South Africa. This study aimed to review the outcomes of redo MVR in patients presenting with mitral valve failure to a tertiary South African centre.

METHODS

Retrospective chart review of patients undergoing redo MVR over a 10-year period (2005-2014). Patient demographics, aetiology of valve dysfunction, preoperative clinical assessment and outcomes were analysed.

RESULTS

Sixty-four patients had 80 mitral valve procedures. The M:F ratio was 1:2.8 and the median age was 18 (IQR 14-28.5) and 25 (IQR 18-40) at initial surgery and at redo surgery, respectively. Median interval between original and redo MVRs was 47.5 (IQR 7.5-124) months. Rheumatic valve disease was the original pathology in 58 patients (90.6%). Fifty-two patients underwent a single redo MVR and 12 patients had multiple redo MVRs. Fifty-eight (72.5%) were emergency redo procedures. Prosthetic valve thrombosis was present in 73.8%. Ten patients (15.6%) developed postoperative complications. The median hospital stay and ICU stay were 19 (IQR 12-27.5) days and 4 (IQR 3-7) days, respectively. Two patients died in the postoperative period (3.1%). The mean patient follow-up was 42 months. Three patients died during follow-up.

CONCLUSION

The majority of redo MVR procedures were undertaken as an emergency with valve thrombosis being the most common aetiology. The mortality rate was 3.1% and postoperative complication rate was 15.6%.

Postoperative Outcomes Associated With Procedural Sedation Conducted by Physician and Nonphysician Anesthesia Providers: Findings From the Prospective, Observational African Surgical Outcomes Study

BACKGROUND

There is an unmet need for essential surgical services in Africa. Limited anesthesia services are a contributing factor. Nonphysician anesthesia providers are utilized to assist with providing anesthesia and procedural sedation to make essential surgeries available. There is a paucity of data on outcomes following procedural sedation for surgery in Africa. We investigated the postoperative outcomes following procedural sedation by nonphysicians and physicians in Africa. We hypothesized that the level of training of the sedation provider may be associated with the incidence of severe postoperative complications and death.

METHODS

A secondary analysis of a prospective cohort of inhospital adult surgical patients representing 25 African countries was performed. The primary outcome was a collapsed composite of inhospital severe postoperative complications and death. We assessed the association between receiving procedural sedation conducted by a nonphysician (versus physician) and the composite outcome using logistic regression. We used the inverse probability of treatment weighting propensity score method to adjust for potential confounding variables including patient age, hemoglobin level, American Society of Anesthesiologists (ASA) physiological status, diabetes mellitus, urgency of surgery, severity of surgery, indication for surgery, surgical discipline, seniority of the surgical team, hospital level of specialization, and hospital funding system using public or private funding. All patients who only received procedural sedation for surgery were included.

RESULTS

Three hundred thirty-six patients met the inclusion criteria, of which 98 (29.2%) received sedation from a nonphysician provider. The incidence of severe postoperative complications and death was 10 of 98 (10.2%) in the nonphysician group and 5 of 238 (2.1%) in the physician group. The estimated association between procedural sedation conducted by a nonphysician provider and inhospital outcomes was an 8-fold increase in the odds of severe complications and/or death, with an odds ratio (95% confidence interval [CI]) of 8.3 (2.7-25.6).

CONCLUSIONS

The modest number of observations in this secondary data analysis suggests that shifting the task of procedural sedation from physicians to nonphysicians to increase access to care may be associated with severe postoperative complications and death in Africa. Research focusing on identifying factors contributing to adverse outcomes associated with procedural sedation is necessary to make this practice safer.

A fourteen-year audit of surgery for inflammatory bowel disease at a tertiary colorectal unit

BACKGROUND

In South Africa, inflammatory bowel disease (IBD) is increasing in frequency. The purpose of the study was to document our experience with the surgical management of patients with IBD and describe the cohort undergoing surgical management of IBD in a KwaZulu-Natal province tertiary state sector hospital.

METHODS

Retrospective analysis of a database of patients undergoing surgery for IBD. Demographics, site and disease duration, surgical indications, management and outcome were analysed.

RESULTS

Of 397 patients with IBD, 136 had Crohn's disease (CD) (African 13, Indian 78, Coloured 10 and White 35) and 261 had ulcerative colitis (UC) (African 67, Indian 158, Coloured 9 and White 27). Eighty-six of 136 patients with CD required surgical referral. Ileo-colonic CD was most common and non-stricturing/non-penetrating disease behaviour predominated. Seventy-four patients with CD underwent 76 abdominal surgical procedures with in-hospital mortality of 3.5% and a morbidity of 20.9%. Twenty patients required anorectal fistula procedures. Recurrence occurred in nine patients (10.5%) and malignant transformation was seen in three patients (2.2%). One hundred and sixty-three of the 261 patients with UC had pancolitis. Failed medical management was the most common indication for surgical referral. Fiftyone patients with UC had surgery, (age 44.5 [IQR 27-56] years). Forty-five patients underwent 63 abdominal surgical procedures with an overall mortality of 17.7% and a morbidity of 39.2%. Colorectal cancer was seen in 10 patients (3.8%). Laparoscopic procedures were undertaken in eight CD patients (10.8%) and 29 UC patients (39%). The median hospital stay was 7 days for both open and laparoscopic resection.

CONCLUSION

IBD is not uncommon in African patients, with UC being more frequent than CD. Postoperative mortality and potential for malignant transformation are higher for UC.

Engaging surgeons among clinician-scientists

Since completion of the Human Genome Project at the turn of the century, there have been significant advances in genomic technologies together with genomics research. At the same time, the gap between biomedical discovery and clinical application has narrowed through translational medicine, so establishing the era of personalised medicine. In bridging these two disciplines, the clinician-scientist has become an integral part of modern practice. Surgeons and surgical diseases have been less represented than physicians and medical conditions among clinician-scientists and research. Here, we explore the possible reasons for this and propose strategies for moving forward. Discovery-driven personalised medicine is both the present and the future of clinical patient care worldwide, and South Africa is uniquely placed to build capacity for biomedical discovery in Africa. Diverse engagement across clinical disciplines, including surgery, is necessary in order to integrate modern medicine into a developing-world contextualised perspective.

Clinicopathological spectrum of small bowel obstruction and management outcomes in adults - experience at a regional academic hospital complex

BACKGROUND

Delay in operative management of small bowel obstruction (SBO) results in increased morbidity and mortality. The objective was to evaluate clinical presentation and treatment outcome of SBO.

METHOD

Prospective cohort study between 2013-2014. Adult patients presenting with SBO were included. Demographics, clinical details, investigations, operative findings, in-hospital progress and outcomes were documented.

RESULTS

There were 156 patients (median age 37 [IQR 27-54 years]) with early (44) and delayed (112) presentation. M:F ratio was 1.4:1. Common causes of obstruction were adhesions (94; 60.3%) and hernias (31; 19.9%). Non-operative management was feasible in 59 patients (37.3%) with a success rate of 71.2%. Nonviable bowel was present in 45.1% (early 31%, delayed 50%; p = 0.078). Sixty-one patients (54%) underwent bowel resection; nine patients (20.5%) in the early presentation group and 52 (46.4%) in the delayed group (p = 0.003). Thirty-one patients needed ICU admission (early 5, delayed 26; p = 0.091). The delayed group had longer ICU stay (p = 0.018) and longer hospital stay (p < 0.001). There were more complications (p = 0.084) and re-laparotomies (p = 0.156) in the delayed group. Eight patients died (5.1%).

CONCLUSION

The main causes of SBO were adhesions and hernias. Late presentation was associated with higher resection rate, higher critical care admission and longer hospital stay.

Diabetes and lower extremity amputation - rehabilitation pathways and outcomes at a regional hospital

BACKGROUND

Lower extremity amputations (LEAs) are most frequently due to diabetes mellitus (DM), a disease on the rise. The objective of this study was to determine the prevalence and aetiology of LEAs at Addington Hospital from 2013 to 2017 and to explore the physiotherapy referral practices and outcomes.

METHODS

Retrospective study carried out at Addington Hospital, Durban. Patients who underwent LEAs were filtered from theatre registers and the hospital Meditech database. Data collected included patients' demographic profile, diabetic status, level of amputation, limb orientation, physiotherapy referral status, and rehabilitation outcomes. Physiotherapy files were scanned for the attendance of referred patients. Study endpoints were prevalence, diabetes status, referral status, compliance and rehabilitation outcomes.

RESULTS

From 2013 to 2017, 1 028 LEAs in 843 patients were identified with single amputations (697) and multiple amputations (146). The median age was 61 (IQR 52-68) years, and the M:F ratio was 1.3:1. A total of 574 (68.1%) patients had DM. Seven hundred and thirty-eight (71.8%) amputations were as a result of DM. The level of amputations was below-knee (479; 46.6%), toectomy (236; 23%), above-knee (196; 19%) and trans-metatarsal (117; 11.4%). Only 148 patients (17.6%) were referred for physiotherapy, of which 91 (61.5%) attended. Mobility in those who attended rehabilitation was with a walking frame (51; 56%), crutches (29; 31.9%), prosthesis and crutches (7; 7.7%), and wheelchair-bound (4; 4.4%).

CONCLUSION

Over half the amputations were associated with DM, which was also a risk factor for multiple amputations. Although referral and attendance for physiotherapy were very poor, mobility in those who attended was excellent, indicating a dire need to improve hospital referral pathways.

Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries

BACKGROUND

80% of individuals with cancer will require a surgical procedure, yet little comparative data exist on early outcomes in low-income and middle-income countries (LMICs). We compared postoperative outcomes in breast, colorectal, and gastric cancer surgery in hospitals worldwide, focusing on the effect of disease stage and complications on postoperative mortality.

METHODS

This was a multicentre, international prospective cohort study of consecutive adult patients undergoing surgery for primary breast, colorectal, or gastric cancer requiring a skin incision done under general or neuraxial anaesthesia. The primary outcome was death or major complication within 30 days of surgery. Multilevel logistic regression determined relationships within three-level nested models of patients within hospitals and countries. Hospital-level infrastructure effects were explored with three-way mediation analyses. This study was registered with ClinicalTrials.gov, NCT03471494.

FINDINGS

Between April 1, 2018, and Jan 31, 2019, we enrolled 15 958 patients from 428 hospitals in 82 countries (high income 9106 patients, 31 countries; upper-middle income 2721 patients, 23 countries; or lower-middle income 4131 patients, 28 countries). Patients in LMICs presented with more advanced disease compared with patients in high-income countries. 30-day mortality was higher for gastric cancer in low-income or lower-middle-income countries (adjusted odds ratio 3·72, 95% CI 1·70-8·16) and for colorectal cancer in low-income or lower-middle-income countries (4·59, 2·39-8·80) and upper-middle-income countries (2·06, 1·11-3·83). No difference in 30-day mortality was seen in breast cancer. The proportion of patients who died after a major complication was greatest in low-income or lower-middle-income countries (6·15, 3·26-11·59) and upper-middle-income countries (3·89, 2·08-7·29). Postoperative death after complications was partly explained by patient factors (60%) and partly by hospital or country (40%). The absence of consistently available postoperative care facilities was associated with seven to 10 more deaths per 100 major complications in LMICs. Cancer stage alone explained little of the early variation in mortality or postoperative complications.

INTERPRETATION

Higher levels of mortality after cancer surgery in LMICs was not fully explained by later presentation of disease. The capacity to rescue patients from surgical complications is a tangible opportunity for meaningful intervention. Early death after cancer surgery might be reduced by policies focusing on strengthening perioperative care systems to detect and intervene in common complications.

FUNDING

National Institute for Health Research Global Health Research Unit.

A fourteen-year audit of surgery for inflammatory bowel disease at a tertiary colorectal unit

ABSTRACT BACKGROUND: In South Africa, inflammatory bowel disease (IBD) is increasing in frequency. The purpose of the study was to document our experience with the surgical management of patients with IBD and describe the cohort undergoing surgical management of IBD in a KwaZulu-Natal province tertiary state sector hospital METHODS: Retrospective analysis of a database of patients undergoing surgery for IBD. Demographics, site and disease duration, surgical indications, management and outcome were analysed RESULTS: Of 397 patients with IBD, 136 had Crohn's disease (Cd) (African 13, Indian 78, Coloured 10 and White 35) and 261 had ulcerative colitis (UC) (African 67, Indian 158, Coloured 9 and White 27). Eighty-six of 136 patients with CD required surgical referral. Ileo-colonic CD was most common and non-stricturing/non-penetrating disease behaviour predominated. Seventy-four patients with CD underwent 76 abdominal surgical procedures with in-hospital mortality of 3.5% and a morbidity of 20.9%. Twenty patients required anorectal fistula procedures. Recurrence occurred in nine patients (10.5%) and malignant transformation was seen in three patients (2.2%). One hundred and sixty-three of the 261 patients with UC had pancolitis. Failed medical management was the most common indication for surgical referral. Fifty-one patients with UC had surgery, (age 44.5 [IQR 27-56] years). Forty-five patients underwent 63 abdominal surgical procedures with an overall mortality of 17.7% and a morbidity of 39.2%. Colorectal cancer was seen in 10 patients (3.8%). Laparoscopic procedures were undertaken in eight CD patients (10.8%) and 29 UC patients (39%). The median hospital stay was 7 days for both open and laparoscopic resection CONCLUSION: IBD is not uncommon in African patients, with UC being more frequent than CD. Postoperative mortality and potential for malignant transformation are higher for UC Keywords: inflammatory bowel disease, Crohn's disease, ulcerative colitis, surgical management

Diabetes and lower extremity amputation -rehabilitation pathways and outcomes at a regional hospital

ABSTRACT BACKGROUND: Lower extremity amputations (LEAs) are most frequently due to diabetes mellitus (DM), a disease on the rise. The objective of this study was to determine the prevalence and aetiology of LEAs at Addington Hospital from 2013 to 2017 and to explore the physiotherapy referral practices and outcomes METHODS: Retrospective study carried out at Addington Hospital, Durban. Patients who underwent LEAs were filtered from theatre registers and the hospital Meditech database. Data collected included patients' demographic profile, diabetic status, level of amputation, limb orientation, physiotherapy referral status, and rehabilitation outcomes. Physiotherapy files were scanned for the attendance of referred patients. Study endpoints were prevalence, diabetes status, referral status, compliance and rehabilitation outcomes RESULTS: From 2013 to 2017, 1 028 LEAs in 843 patients were identified with single amputations (697) and multiple amputations (146). The median age was 61 (IQR 52-68) years, and the M:F ratio was 1.3:1. A total of 574 (68.1%) patients had DM. Seven hundred and thirty-eight (71.8%) amputations were as a result of DM. The level of amputations was below-knee (479; 46.6%), toectomy (236; 23%), above-knee (196; 19%) and trans-metatarsal (117; 11.4%). Only 148 patients (17.6%) were referred for physiotherapy, of which 91 (61.5%) attended. Mobility in those who attended rehabilitation was with a walking frame (51; 56%), crutches (29; 31.9%), prosthesis and crutches (7; 7.7%), and wheelchair-bound (4; 4.4% CONCLUSION: Over half the amputations were associated with DM, which was also a risk factor for multiple amputations. Although referral and attendance for physiotherapy were very poor, mobility in those who attended was excellent, indicating a dire need to improve hospital referral pathways Keywords: prevalence, diabetes mellitus, lower extremity amputations, rehabilitation, physiotherapy

Clinicopathological spectrum of small bowel obstruction and management outcomes in adults - experience at a regional academic hospital complex

ABSTRACT BACKGROUND: Delay in operative management of small bowel obstruction (SBO) results in increased morbidity and mortality. The objective was to evaluate clinical presentation and treatment outcome of SBO METHOD: Prospective cohort study between 2013-2014. Adult patients presenting with SBO were included. Demographics, clinical details, investigations, operative findings, in-hospital progress and outcomes were documented RESULTS: There were 156 patients (median age 37 [IQR 27-54 years]) with early (44) and delayed (112) presentation. :F ratio was 1.4:1. Common causes of obstruction were adhesions (94; 60.3%) and hernias (31; 19.9%). Non-operative management was feasible in 59 patients (37.3%) with a success rate of 71.2%. Nonviable bowel was present in 45.1% (early 31%, delayed 50%; p = 0.078). Sixty-one patients (54%) underwent bowel resection; nine patients (20.5%) in the early presentation group and 52 (46.4%) in the delayed group (p = 0.003). Thirty-one patients needed ICU admission (early 5, delayed 26; p = 0.091). The delayed group had longer ICU stay (p = 0.018) and longer hospital stay (p < 0.001). There were more complications (p = 0.084) and re-laparotomies (p = 0.156) in the delayed group. Eight patients died (5.1% CONCLUSION: The main causes of SBO were adhesions and hernias. Late presentation was associated with higher resection rate, higher critical care admission and longer hospital stay Keywords: small bowel obstruction, adhesive bowel obstruction, acute abdomen

A perspective in the management of myelomeningocoele in the KwaZulu-Natal Province of South Africa

BACKGROUND

Myelomeningocoele (MMC) is common in the developing world. The purpose of this study was to investigate the clinical characteristics and management of myelomeningocoele and to identify factors contributing to outcomes.

METHODS

This was a retrospective, observational study of consecutive children diagnosed with MMC managed in the Paediatric Neurosurgery Unit at Inkosi Albert Luthuli Central Hospital. Multiple logistic regression analysis identified clinical characteristics, demographics and surgical variables that were associated with outcome.

RESULTS

A total of 309 children were managed during this period (M:F 1.3:1). The most common sites were lumbar, lumbo-sacral and sacral. Mean age at surgical repair was 4.7 ± 15.6 months. Two hundred and eight children had ventriculomegaly, of whom 158 had symptomatic hydrocephalus, requiring CSF diversion. Fifty-eight (21%) patients developed wound sepsis, of whom 13 (22%) developed meningitis (p = 0.001). The time to wound sepsis was 9.5 ± 3.6 days. The commonest organism isolated was Staphylococcus aureus followed by MRSA. Thirty-two patients (23%) developed shunt malfunction and three (11%) developed ETV malfunction. Twenty children (9%) demised during the admission period. Death was associated with meningitis (p < 0.0001), and meningitis itself was associated with wound sepsis (p < 0.0001). Hospital stay was 20.4 ± 16 days. Wound sepsis (p = 0.002) and meningitis (p < 0.0001), respectively, were associated with prolonged hospital stay.

CONCLUSION

There was a slight male preponderance and hydrocephalus occurred in two thirds of cases. Wound sepsis and meningitis were associated poor outcomes.

Admissions for post-discharge surgical site infection at a quaternary South African public sector hospital

BACKGROUND

Reports of post-discharge admissions for surgical site infection (SSI) in African settings are lacking. This information could assist with allocating resources within hospitals, as well as developing targeted interventions aimed at reducing post-discharge SSI. The primary objective of this study was to determine trends in admissions for post-discharge SSI at a South African quaternary/teaching hospital. The secondary objective was to determine trends in mortality rates for these admissions.

METHODS

This was a retrospective review of adult admissions for post-discharge SSI at a quaternary/teaching South African hospital between 2006 and 2015. Admissions for post-discharge SSI were identified using the hospital administrative database and appropriate International Classification of Disease, 10^th Revision codes. Mortality was determined from the discharge disposition for each admission. Data were analysed with simple regression and trend line statistics. The geospatial distribution of post-discharge SSI, based on the residential postal codes recorded on the hospital administrative database for each admission, was determined using the Power Map® software program.

RESULTS

There was no change in admissions for post-discharge SSI over the study period (p = 0.17). Mortality in elderly admissions declined during the study period (p = 0.03). Most admissions for post-discharge SSIs originated from urban areas.

CONCLUSION

Despite the implementation of universal SSI prevention methods, admissions for post-discharge SSI remained consistent during the study period. Urban areas appeared to be more.

General attitudes toward research: a pilot survey of HIV-positive surgical patients

BACKGROUND

The general attitude of HIV-positive surgical patients toward research has not been described, and it is uncertain whether interventions aimed at improving general attitudes toward research are required in this group. The aim of this pilot survey was to address the aforementioned paucity in the literature.

METHOD

This was a prospective survey of 39 HIV-positive surgical patients. The 7-item Research Attitudes Questionnaire (RAQ) and a demographic characteristics questionnaire were administered to each study participant. Likert responses for the RAQ were converted into numeric values, and cumulative research attitude scores were computed for each study participant. A descriptive analysis of study participant responses to the RAQ was performed. Statistical associations between demographic characteristics and cumulative research attitude scores were also assessed.

RESULTS

Depending on the RAQ item, between 74.3% and 95.9% of study participants responded positively toward research. Negative responses ranged between 0.0% and 10.3%, while neutral responses to RAQ items ranged between 2.6% and 23.1%. Female study participants had lower median research attitudes scores when compared with their male counterparts (p = 0.014).

CONCLUSION

In general, study participants expressed a positive attitude toward research. The proportion of neutral responses for some RAQ items suggests there are certain aspects of research which require clarification to prospective research participants. Efforts should be made to improve female HIV-positive surgical patients' overall attitude toward research.

The ASOS Surgical Risk Calculator: development and validation of a tool for identifying African surgical patients at risk of severe postoperative complications

BACKGROUND

The African Surgical Outcomes Study (ASOS) showed that surgical patients in Africa have a mortality twice the global average. Existing risk assessment tools are not valid for use in this population because the pattern of risk for poor outcomes differs from high-income countries. The objective of this study was to derive and validate a simple, preoperative risk stratification tool to identify African surgical patients at risk for in-hospital postoperative mortality and severe complications.

METHODS

ASOS was a 7-day prospective cohort study of adult patients undergoing surgery in Africa. The ASOS Surgical Risk Calculator was constructed with a multivariable logistic regression model for the outcome of in-hospital mortality and severe postoperative complications. The following preoperative risk factors were entered into the model; age, sex, smoking status, ASA physical status, preoperative chronic comorbid conditions, indication for surgery, urgency, severity, and type of surgery.

RESULTS

The model was derived from 8799 patients from 168 African hospitals. The composite outcome of severe postoperative complications and death occurred in 423/8799 (4.8%) patients. The ASOS Surgical Risk Calculator includes the following risk factors: age, ASA physical status, indication for surgery, urgency, severity, and type of surgery. The model showed good discrimination with an area under the receiver operating characteristic curve of 0.805 and good calibration with c-statistic corrected for optimism of 0.784.

CONCLUSIONS

This simple preoperative risk calculator could be used to identify high-risk surgical patients in African hospitals and facilitate increased postoperative surveillance.

CLINICAL TRIAL REGISTRATION

NCT03044899.

Perioperative patient outcomes in the African Surgical Outcomes Study: a 7-day prospective observational cohort study

BACKGROUND

There is a need to increase access to surgical treatments in African countries, but perioperative complications represent a major global health-care burden. There are few studies describing surgical outcomes in Africa.

METHODS

We did a 7-day, international, prospective, observational cohort study of patients aged 18 years and older undergoing any inpatient surgery in 25 countries in Africa (the African Surgical Outcomes Study). We aimed to recruit as many hospitals as possible using a convenience sampling survey, and required data from at least ten hospitals per country (or half the surgical centres if there were fewer than ten hospitals) and data for at least 90% of eligible patients from each site. Each country selected one recruitment week between February and May, 2016. The primary outcome was in-hospital postoperative complications, assessed according to predefined criteria and graded as mild, moderate, or severe. Data were presented as median (IQR), mean (SD), or n (%), and compared using t tests. This study is registered on the South African National Health Research Database (KZ_2015RP7_22) and ClinicalTrials.gov (NCT03044899).

FINDINGS

We recruited 11 422 patients (median 29 [IQR 10-70]) from 247 hospitals during the national cohort weeks. Hospitals served a median population of 810 000 people (IQR 200 000-2 000 000), with a combined number of specialist surgeons, obstetricians, and anaesthetists totalling 0·7 (0·2-1·9) per 100 000 population. Hospitals did a median of 212 (IQR 65-578) surgical procedures per 100 000 population each year. Patients were younger (mean age 38·5 years [SD 16·1]), with a lower risk profile (American Society of Anesthesiologists median score 1 [IQR 1-2]) than reported in high-income countries. 1253 (11%) patients were infected with HIV, 6504 procedures (57%) were urgent or emergent, and the most common procedure was caesarean delivery (3792 patients, 33%). Postoperative complications occurred in 1977 (18·2%, 95% CI 17·4-18·9]) of 10 885 patients. 239 (2·1%) of 11 193 patients died, 225 (94·1%) after the day of surgery. Infection was the most common complication (1156 [10·2%] of 10 970 patients), of whom 112 (9·7%) died.

INTERPRETATION

Despite a low-risk profile and few postoperative complications, patients in Africa were twice as likely to die after surgery when compared with the global average for postoperative deaths. Initiatives to increase access to surgical treatments in Africa therefore should be coupled with improved surveillance for deteriorating physiology in patients who develop postoperative complications, and the resources necessary to achieve this objective.

FUNDING

Medical Research Council of South Africa.

Does high-carbohydrate intake lead to increased risk of obesity? A systematic review and meta-analysis

OBJECTIVES

The present study aimed to test the association between high and low carbohydrate diets and obesity, and second, to test the link between total carbohydrate intake (as a percentage of total energy intake) and obesity.

SETTING, PARTICIPANTS AND OUTCOME MEASURES

We sought MEDLINE, PubMed and Google Scholar for observation studies published between January 1990 and December 2016 assessing an association between obesity and high-carbohydrate intake. Two independent reviewers selected candidate studies, extracted data and assessed study quality.

RESULTS

The study identified 22 articles that fulfilled the inclusion and exclusion criteria and quantified an association between carbohydrate intake and obesity. The first pooled strata (high-carbohydrate versus low-carbohydrate intake) suggested a weak increased risk of obesity. The second pooled strata (increasing percentage of total carbohydrate intake in daily diet) showed a weak decreased risk of obesity. Both these pooled strata estimates were, however, not statistically significant.

CONCLUSIONS

On the basis of the current study, it cannot be concluded that a high-carbohydrate diet or increased percentage of total energy intake in the form of carbohydrates increases the odds of obesity. A central limitation of the study was the non-standard classification of dietary intake across the studies, as well as confounders like total energy intake, activity levels, age and gender. Further studies are needed that specifically classify refined versus unrefined carbohydrate intake, as well as studies that investigate the relationship between high fat, high unrefined carbohydrate-sugar diets.

PROSPERO REGISTRATION NUMBER

CRD42015023257.

Serum alcohol levels correlate with injury severity and resource utilization

BACKGROUND

Alcohol consumption leads to violence and poor judgement. The resultant trauma is the leading cause of emergency department visits. In South Africa, alcohol-related emergency visits can be as high as 57%. The purpose of this prospective study was to establish the prevalence of positive blood alcohol and Blood Alcohol Concentration (BAC) at a tertiary trauma unit in Durban, and to correlate it with injury severity, length of hospital stay and resource utilization.

METHOD

A total of 100 patients from King Edward trauma unit were analysed prospectively during the period December 2014 to February 2015. The BAC was correlated with Injury Severity Score (ISS), mechanism of injury, length of stay, and in-hospital mortality. Pearson chi-square test, Wilcoxon rank sum and student t-test were used for statistical analysis.

RESULTS

Eighty-eight patients were male. The mean age was 30 ± 9.3 years. Forty-seven patients tested positive for blood alcohol, of whom 81% were above the legal limit for professional drivers. The mean BAC among the alcohol positive patients was 0.146 g/dL. Positive blood alcohol was associated with significantly higher ISS scores (p = 0.0004). Injuries due to interpersonal violence were seen in 83 patients of whom 42 (51%) had positive blood alcohol. Hospital stay for alcohol positive patients was significantly longer compared to alcohol negative patients (p < 0.001).

CONCLUSION

The prevalence of blood alcohol in the trauma population is high. Positive blood alcohol is associated with high ISS and longer hospital stays.

Does the reporting of gastro-intestinal endoscopy meet the minimal terminology standard at King Edward VIII Hospital?

BACKGROUND

The Minimal Standard Terminology (MST) was developed to standardise endoscopic reporting. This study is aimed at assessing current reporting at a tertiary hospital and whether it meets this Minimal Standard Terminology.

METHOD

This was a retrospective observational study of upper endoscopy reports between January and December 2014. The data extracted were compared to the current reporting standard listed in the MST. To assess and grade the quality of reporting we developed a Gastrointestinal Reporting Score, which incorporates MST variables in addition to demographic details, indication for endoscopy, report legibility, sedation and the use of classification systems to describe pathology. Variables were classified as blank, partially complete or complete and assigned a score of 1-3. The reports were graded according to their overall score for all variables (Max 40) into Grade A (> 36), B (28-36) and C (< 28).

RESULTS

There were 100 patients of which 58 were female. Thirty-seven per cent were from the 60-75 year age group. Fiftyfour endoscopies were performed by trainee specialists. Junior and senior consultants performed 36 and 9 upper endoscopies respectively. Indications for upper endoscopy were stated in 51 reports. The use of pre-procedural sedation was not stated in 51 reports. Four reports were illegible; one was conducted by a junior consultant, two by a fourth year trainee specialist and one by an unknown endoscopist whose name was illegible. Common classification systems for oesophagitis, gastropathy features, ulcer characteristics, and ulcer location are not routinely used. Based on the Gastrointestinal Reporting Score there were no Grade A reports, 16 Grade B and 84 Grade C reports.

CONCLUSION

The MST is not routinely utilised in our setting and reports are incomplete. There is a need for optimal upper endoscopic reporting, incorporating the MST guidelines.

Is Clinical Research in Oesophageal Cancer in South Africa in Crisis? A Systematic Review

Oesophageal cancer (OC) is responsible for the second highest number of cancer-related deaths in South Africa (SA). Squamous cell carcinoma is the most prevalent type with an incidence of 46.7/100,000 and 19.2/100,000 for males and females. This is a systematic review of the clinical diagnosis and management of OC within the South African context. This protocol was registered with the International Prospective Register of Systematic Reviews (PROSPERO) (registration number CRD42016034053) with adherence to PRISMA guidelines. An online search was performed using MEDLINE, EBSCOHost and PubMed. Eligibility criteria for articles included published, original peer-reviewed research addressing clinical management of oesophageal cancer in South Africa. Review articles, case reports, scientific letters and studies published in languages other than English or Afrikaans were excluded. The research terms were 'etiology', 'human', 'esophageal cancer', 'esophageal carcinoma', 'oesophageal cancer', and 'oesophageal carcinoma', 'squamous cell carcinoma', 'Africa' and 'South Africa'. A total of 336 articles were identified. Of these, 146 were immediately excluded and a further 159 were excluded after review. A total of 31 appropriate articles, i.e. 9.2% of searched articles, were included. Thirteen articles addressed chemotherapy and/or radiotherapy, 9 oesophageal luminal therapy, 7 oesophageal surgery and 2 screening. OC research of in SA over the last two decades has mainly been in the form of reviews and opinion papers. Clinical research, auditing and prospectively analysing OC management and outcomes in SA hospitals are sorely needed and should be promoted by both healthcare workers and policy makers alike.

Does gender impact on female doctors'experiences in the training and practice of surgery? A single centre study

BACKGROUND

Surgery has been identified as a male-dominated specialty in South Africa and abroad. This study explored how female registrars perceived the impact of gender on their training and practice of surgery.

METHOD

A self-administered questionnaire was used to explore whether females perceived any benefits to training in a male-dominated specialty, their choice of mentors and the challenges that they encountered during surgical training.

RESULTS

Thirty-two female registrars participated in the study. The respondents were mainly South African (91%) and enrolled in seven surgical specialties. Twenty-seven (84%) respondents were satisfied with their training and skills development. Twenty-four (75%) respondents had a mentor from the department. Seventeen (53%) respondents perceived having received differential treatment due to their gender and 25 (78.2%) thought that the gender of their mentor did not impact on the quality of the guidance received in surgery. Challenges included physical threats to female respondents from patients and disrespect, emotional threats and defaming statements from male registrars. Additional challenges included time-constraints for family and academic work, poor work-life balance and being treated differently due to their gender. Seventeen (53%) respondents would consider teaching in the Department of Surgery.

CONCLUSION

Generally, females had positive perceptions of their training in Surgery. They expressed concern about finding and maintaining a work-life balance. The gender of their mentor did not impact on the quality of the training but 'bullying' from male peers and selected supervisors occurred. Respondents will continue to recommend the specialty as a satisfying career to young female students.

What is the diagnostic yield of colonoscopy in patients with a referral diagnosis of constipation in South Africa?

BACKGROUND

Constipation is a common problem for referral to surgical and colorectal units. Its association with colorectal cancer is controversial. Some authors have found an increased incidence while others have not. The aim of this study is to investigate the incidence of colorectal cancer (CRC) and other significant colonoscopic pathologies in patients undergoing colonoscopy for constipation.

METHOD

All colonoscopy reports for constipation were retrieved from our database from January 2011 to 30 June 2014. Data extracted included demographics, colonoscopic findings and adequacy of bowel preparation. Exclusion criteria included patients with other symptoms known to be associated with colonic neoplasia such as lower GIT bleeding, loss of weight, patients with associated anaemia, those with abnormalities on imaging, patients with personal or family history of colorectal cancers or colorectal polyps and patients with inflammatory bowel disease. The primary outcome was the presence of neoplasia at colonoscopy and the secondary outcomes were other colonoscopy findings.

RESULTS

A total of 985 colonoscopies were performed from January 2011 to June 2014 of which 144 were done for a referral diagnosis of constipation. Eighty eight (61.1%) were female. Their mean age was 58.6 + 13.8 years (range 19-95 years). There were 61 (42.4%) African patients, 38 (26.4%) White, 33 (22.9%) Asians and 12 (8.3%) Coloured patients. Eighty seven (60.4%) patients had a normal colonoscopy, 20 (13.9%) diverticular disease, 14 (9.7%) polyps of which 6 (4.2%) were neoplastic, and 9 (6.3%) had colorectal cancer.

CONCLUSION

Constipation is associated with CRC. The presence of constipation should be a criterion for colonoscopy regardless of age or any other associated clinical features.

Oesophageal squamous cell cancer in a South African tertiary hospital: a risk factor and presentation analysis

BACKGROUND

Squamous carcinoma of the oesophagus (SCO) is the most common form of oesophageal cancer in South Africa (SA). Risk factors include male gender, smoking, alcohol consumption and low socio-economic status (SES). This study assessed the risk factors for SCO in KwaZulu-Natal.

METHOD

Information on patients managed at Inkosi Albert Luthuli Central Hospital (IALCH), Durban, South Africa, between 1 October 2013 and 31 December 2014 was retrieved from a prospective database of Oesophageal Cancer (OC). Data collected included demographics, risk factors, symptoms and clinical findings.

RESULTS

One hundred and fifty-nine patients (159) with SCO were identified. The site of tumour location was in the middle 96 (60.4%), distal 42(26.4%) and proximal 17(10.6%) oesophagus. The male to female ratio was 1:1 with an age range of 22-93 years (mean 60.6; SD±12.1). Females were significantly older than males (p = 0.018). Eighty-eight per cent were Black African. Dysphagia was reported in 158 (99.4%) of patients and loss of weight in 149(95.5%). Thirty-six patients were HIV positive (age 52.8; SD±9.7) and significantly younger than those without HIV infection (age 61.2; SD±11.5). Most patients had low SES and poor dental health. Male patients were significantly more likely to use tobacco (p < 0.001; Odds Ratio (OR) 7.8) and consume alcohol (p < 0.001; OR 7.7) than females who were 2.5 times more likely to report a family history of cancer (p = 0.017; OR 2.6).

CONCLUSION

An equal gender distribution was observed. Male patients with SCO reported the expected risk factors; however these were not observed amongst women. SES may contribute to the development of SCO. Poor dental health may be a surrogate marker for low SES and a possible risk factor for SCO. HIV positive individuals present a decade younger when compared with HIV negative patients.

Is the clinicopathological pattern of colorectal carcinoma similar in the state and private healthcare systems of South Africa? Analysis of a Durban colorectal cancer database

Previous state hospital-based local studies suggest varying population-based clinicopathological patterns of colorectal cancer (CRC). Patients diagnosed with CRC in the state and private sector hospitals in Durban, South Africa over a 12-month period (January-December 2009) form the basis of our study. Of 491 patients (172 state and 319 private sector patients), 258 were men. State patients were younger than private patients. Anatomical site distribution was similar in both groups with minor variations. Stage IV disease was more common in state patients. State patients were younger, presented with advanced disease and had a lower resection rate. Black patients were the youngest, presented with advanced disease and had the lowest resection rate.

Transvaginal small bowel evisceration

We report on the rare entity of transvaginal small bowel herniation following a transvaginal hysterectomy. The risk factors, presentation, initial management and various surgical approaches are discussed. It is a condition that requires prompt surgical intervention. This report serves to highlight awareness of the condition, and how knowledge of the various methods of addressing an ischaemic bowel and a ruptured vaginal vault can result in a favourable outcome.

Carbohydrate intake, obesity, metabolic syndrome and cancer risk? A two-part systematic review and meta-analysis protocol to estimate attributability

INTRODUCTION

Linkages between carbohydrates, obesity and cancer continue to demonstrate conflicting results. Evidence suggests inconclusive direct linkages between carbohydrates and specific cancers. Conversely, obesity has been strongly linked to a wide range of cancers. The purpose of the study is to explore linkages between carbohydrate intake and cancer types using a two-step approach. First the study will evaluate the linkages between carbohydrate intake and obesity, potentially stratified by metabolic syndrome status. Second, the estimated attributable fraction of obesity ascribed to carbohydrate intake will be multiplied against obesity attributable fractions for cancer types to give estimated overall attributable fraction for carbohydrate versus cancer type.

METHODS AND ANALYSIS

We will perform a comprehensive search to identify all possible published and unpublished studies that have assessed risk factors for obesity including dietary carbohydrate intake. Scientific databases, namely PubMed MEDLINE, EMBASE, EBSCOhost and ISI Web of Science will be searched. Following study selection, paper/data acquisition, and data extraction and synthesis, we will appraise the quality of studies and risk of bias, as well as assess heterogeneity. Meta-weighted attributable fractions of obesity due to carbohydrate intake will be estimated after adjusting for other potential confounding factors (eg, physical inactivity, other dietary intake). Furthermore, previously published systematic reviews assessing the cancer-specific risk associated with obesity will also be drawn. These estimates will be linked with the attributability of carbohydrate intake in part 1 to estimate the cancer-specific burden that can be attributed to dietary carbohydrates. This systematic review protocol has been developed according to the 'Preferred Reporting Items for Systematic review and Meta-Analysis Protocols (PRISMA-P) 2015'.

ETHICS AND DISSEMINATION

The current study will be based on published literature and data, and, as such, ethics approval is not required. The final results of this two part systematic review (plus multiplicative calculations) will be published in a relevant international peer-reviewed journal.

TRIAL REGISTRATION NUMBER

PROSPERO CRD42015023257.

The morphology of the foetal sigmoid colon in the African population: a possible predisposition to sigmoid volvulus

AIM

This study aimed to determine the morphological types of the foetal sigmoid colon and establish if the anatomical predisposition to sigmoid volvulus is present in Black African foetuses. Sigmoid volvulus affects Black Africans in our province more frequently than other ethnic groups, and males more than females. Its aetiology remains speculative, with factors being proposed that do not suggest the pathogenetic mechanisms or the gender bias. Previous anatomical studies have suggested that Black Africans have a predisposition to sigmoid volvulus due to an elongated sigmoid colon. We investigated whether this phenomenon occurred during foetal development.

METHOD

Foetuses were donated from local hospitals. Population groups were defined as Black African and non-African. After dissection, the anatomy of the sigmoid colon was described according to level of origin, classic or elongated type and shape (broad or narrow).

RESULTS

A total of 296 Black African foetuses and 37 non-African foetuses were donated. The sigmoid colon in the majority of foetuses in all gestational age groups had a low level of origin. An elongated colon was seen in 68% of Black African and 17% of non-African foetuses (P < 0.0001). Among Black Africans there was a higher proportion of elongated sigmoid colon among male (73%) than female foetuses (62%) (P = 0.044). In foetuses with an elongated sigmoid colon the broad shape was more common in females than males and the long-narrow shape was more common in males (P = 0.038).

CONCLUSION

The elongated sigmoid colon seen in Black Africans is present in utero and occurs more frequently in Black African males. A narrow shape is more common in male foetuses and the broad shape is more common in female foetuses. These anatomical features may be the cause of the predisposition to sigmoid volvulus in Black African adults.

The management of retroperitoneal haematoma discovered at laparotomy for trauma

AIM

To review our local experience with presentation and management of retroperitoneal haematomas (RPH) discovered at laparotomy and factors affecting outcome.

METHODS

Patients with retroperitoneal haematomas (RPHs) were identified from a prospective database. Data collected included demographics, clinical presentation, zones and organs involved, management and outcome.

RESULTS

Of a total of 488 patients with abdominal trauma, 145 (30%) with RPH were identified 136 of whom were male (M:F=15:1). Mean age was 28.8 (SD 10.6) years and median delay before surgery was 7h. The injury mechanisms were firearms (109), stabs (24), and blunt trauma (12). Twenty-four patients (17%) presented with shock. There were 58 Zone I, 69 Zone II, and 38 Zone III haematomas. The median injury severity score (ISS) was 9. Fifty-two patients (36%) developed complications and 26 (18%) patients died. Sixty-four (44%) patients required ICU with median ICU stay of 3 days. All Zone I injuries were explored; Zones II and III were explored selectively. The mortality for Zones I, II, III and IV was 14%, 4%, 29% and 35%, respectively. Mortality was highest for blunt trauma and lowest for stabs (p=0.146). Twelve of 24 patients with shock died (50%) compared to 14 of 121 (12%) without shock (p<0.0001). Eighteen of 64 patients with <6-h delay before surgery died (28%) compared to 8 of 81 (10%) with >6-h delay (p<0.017). Mortality increased with increasing ISS. Median hospital stay was 8 days.

CONCLUSION

RPH accounted for 30% of abdominal trauma. Injury mechanism, presence of shock, delay before surgery and ISS showed a significant association with mortality.

Cranial injuries secondary to assault with a machete

BACKGROUND

Assaults with a machete cause compound skull fractures which present as a neurosurgical emergency. We aimed to profile cranial injuries caused by a machete over a 10 year period in a single neurosurgical unit.

MATERIALS AND METHODS

Retrospective data analysis of cranial injuries following assault with a machete, admitted to the neurosurgery ward, from January 2003 to December 2012 was performed. Medical records were analyzed for demographics, clinical presentation, CT scan findings, surgical treatment and Glasgow Outcome Scale (GOS) at discharge. Management involved wound debridement with antibiotic cover.

RESULTS

Of 185 patients treated 172 (93%) were male. Mean age was 31±11.4 years. Mean GCS on admission was 13±2. Presenting features were focal neurological deficit (48%), brain matter oozing from wounds (20%), and post traumatic seizures (12%). Depressed skull fractures were found in 162 (88%) patients. Findings on CT brain scan were intra-cranial haematoma (88%), pneumocephalus (39%) and features of raised intra-cranial pressure (37%). Thirty-one patients (17%) presented with septic head wounds. One hundred and fifty seven patients (85%) were treated surgically. The median hospital stay was 8 days (range 1-145). The median GOS at discharge was 5 (range 1-5). Twelve patients died within the same admission (6.5%).

CONCLUSION

Machetes cause complex cranial injuries with associated neurological deficit and should be treated as neurosurgical emergency. Timeous intervention and good surgical principles are advocated to prevent secondary infection and further neurological deterioration.

Paediatric head injuries in the Kwazulu-Natal Province of South Africa: a developing country perspective

Summary

We investigated the causes, management and outcome of head injuries in paediatric patients admitted to the paediatric surgery unit at King Edward VIII Hospital overa 3-year period, from 1999 to 2001. There were 506 patients (331 male; M:F ratio 2:1) and the mean age was 71.99 +36.8 months (2 weeks to 180 months). The injuries were due to: motor vehicle crashes (324); falls (121); assault (30); inadvertent injury (23); and unknown (11). Forty-nine patients (9%) were admitted with a Glasgow Coma Scale ≤8. The most common intracranial pathology on computed tomography was: intracranial haematoma/haemorrhage (44); contusion (16); and brain oedema (10). Nineteen patients (3.4%) underwent neurosurgical intervention and the rest were managed conservatively. Eighteen died in hospital (3.6%). The mean hospital stay was 5 ± 12 days. Twenty-three patients (4.5%) were discharged with neurological sequelae. Few paediatric patients are admitted with severe head injury: the majority from blunt injury caused by motor vehicle crashes. Management mainly requires simple neurological observation in a general ward with a surprisingly good prognosis. Specific protocols for paediatric head injuries have been proposed based on these findings.

How far has the pendulum swung in the surgical management of sigmoid volvulus? Experience from the KwaZulu-Natal Teaching Hospitals and review of the literature

AIM

Sigmoid volvulus is common in sub-Saharan Africa. The aim of the study was to document the clinicopathological patterns of sigmoid volvulus in KwaZulu-Natal.

METHOD

Analysis was performed of prospectively collected data of patients presenting with sigmoid volvulus at the KwaZulu-Natal Teaching Hospitals from 2000 to 2009. Data collected included demographics, clinical presentation, operative findings, management and outcome.

RESULTS

There were 135 patients (122 male) of mean age 39.3 ± 17 years. Management was by emergency surgery (103), elective surgery (23), no surgery (9). The level of the twist was at the pelvic brim. Fifty-four patients had gangrenous bowel and 81 had viable bowel. Resection was accompanied by primary anastomosis (80) and Hartmann's procedure (46). Complication and mortality rates were 47% and 17% respectively. Mortality rates for emergency and elective surgery were 19% and 9% (P = 0.330), and those for primary anastomosis and Hartmann's procedure were 14% and 24% respectively (P = 0.305). Mortality rates for gangrenous and viable bowel were 21% and 15% respectively (P = 0.624). Twenty-eight (22%) patients required intensive care in the intensive care unit (ICU) with an ICU stay of 8.8 ± 8 days. Hospital stay was 10.5 ± 14.4 days.

CONCLUSION

The clinicopathological picture of sigmoid volvulus resembles that in the rest of Africa in that it affects predominantly young African males. The level of the twist is at the pelvic brim. The timing of surgery, the type of anastomosis and the viability of the bowel does not influence outcome.

Intestinal inflammatory myofibroblastic tumour

BACKGROUND

Inflammatory myofibroblastic tumours (IMFTs) are rare tumours characterised by nosologic, histogenetic and aetiopathogenetic controversy and variable clinicopathological features. We report our experience with intestinal-IMFTs (I-IMFTs) that have been reported mainly as single case reports to date.

METHODS

Five patients with I-IMFTs, identified between 2005 and 2008, formed the study cohort. The clinicopathological features were obtained from departmental and hospital records.

RESULTS

The median patient age was 13 years. While 4 patients presented with symptoms and signs of intestinal obstruction, one IMFT was an incidental finding at laparotomy for trauma. Three I-IMFTs were located in the small bowel and 2 in the colon. Complete resection with end-to-end anastomoses was performed. The gross morphology included 1 polypoid myxoid tumour that served as a lead point for an intussusception, 3 multinodular whorled masses and 1 firm circumferential, infiltrative tumour. Microscopically, all tumours had typical features of IMFT with variable expression of ALK-1, a low proliferation index and tumour-free resection margins. All patients had an uneventful recovery. One patient was lost to further follow-up. Four patients were well, without local recurrence or metastases at 6 months to 3 years.

CONCLUSIONS

Surgery with tumour-free resection margins is the gold standard of care of adult and paediatric I-IMFTs. Heightened recognition of I-IMFT, albeit rare, as a cause of intestinal obstruction, including intussusception, is necessary for pre-operative suspicion of I-IMFT.

Sigmoid colon morphology in the population groups of Durban, South Africa, with special reference to sigmoid volvulus

Sigmoid volvulus demonstrates geographical, racial, and gender variation. This autopsy study was undertaken to establish morphological differences of the sigmoid colon and its mesocolon in which the length and other characteristics were assessed. A total of 590 cadavers were examined (403 African, 91 Indian, and 96 White). Length and height of the sigmoid colon and mesocolon were significantly longer in Africans, and mesocolon root was significantly narrower in Africans. Mesocolic ratio for Africans, Indians, and Whites was 1.1 ± 0.8, 1.8 ± 0.7, and 1.9 ± 1.0, respectively. Africans had a significantly high incidence of redundant sigmoid colon with the long-narrow type and suprapelvic position predominating (P = 0.003); the opposite applied to the classic type. There was no difference in sigmoid colon length, mesocolon height, and width between males and females in all population groups. Among Africans, the long-narrow type was more common in males, and the classic and long-broad types were more common in females. Splaying of teniae coli and thickening of the mesentery were more common in Africans. Tethering of the sigmoid colon to the posterior abdominal wall was less common in Africans compared with other population groups. In conclusion, the sigmoid colon was longer, and the sigmoid mesocolon root was narrower in Africans compared with the other population groups, and the sigmoid colon had a suprapelvic disposition among Africans. In Africans, the sigmoid colon was longer in males with a long-narrow shape. These differences may explain geographical and racial differences in sigmoid volvulus.

Volvulus of the sigmoid colon

AIMS

The current status of sigmoid volvulus (SV) was reviewed to assess trends in management and to assess the literature.

METHOD

The literature on SV was retrieved using PubMed, Embase, Scopus, Pakmedinet, African Journals online (AJOL), Indmed and Google scholar. These databases were searched for text words including 'sigmoid', 'colon' and 'volvulus'. Relevant nonindexed surgical journals published from endemic countries were also manually searched. We focused on original articles published within the last 10 years; but classical references prior to this period were also included. Seminal papers published in non-English languages were also included.

RESULTS

Sigmoid volvulus is a leading cause of acute colonic obstruction in South America, Africa, Eastern Europe and Asia. It is rare in developed countries such as USA, UK, Japan and Australia. Characteristic geographic variations in the incidence, clinical features, prognosis and comorbidity of SV justify recognition of endemic and sporadic subtypes. Controversy on aetiologic agents can be minimized by classifying them into 'predisposing' and 'precipitating' factors. Modern imaging systems, although more effective than plain radiographs, are yet to gain popularity. Emergency endoscopic reduction is the treatment of choice in uncomplicated patients. But it is only a temporizing procedure, and it should be followed in most cases by elective definitive surgery. Resection of the redundant sigmoid colon is the gold standard operation. The role of newer nonresective alternatives is yet to be ascertained. Although emergency resection with primary anastomosis (ERPA) has been controversial in the past, it is now increasingly accepted as a safe option with superior results. Management in elderly debilitated patients is extremely difficult. Paediatric SV significantly differs from that in adults. SV is frequently associated with neuropsychiatric diseases, diabetes mellitus and Chagas disease. The overall mortality in recent studies is < 5%.

CONCLUSION

There are almost no randomised controlled studies. According to the grading system of Oxford Center for Evidence Based Medicine (CEVM), available published evidence is at level 4. The recommendations resulting form this review are of 'C' grade.

Anatomical variations in the level of origin of the sigmoid colon from the descending colon and the attachment of the sigmoid mesocolon

The origin of the sigmoid colon is considered constant as is the V-shaped attachment of the sigmoid mesocolon attachment. This study was undertaken to establish anatomical variations in the level of origin of the sigmoid colon (590 autopsies; 403 Africans, 91 Indians, and 96 Whites), and the shape of the attachment of the sigmoid mesocolon (211 autopsies, 127 Africans, 47 Indians, and 37 Whites) in different population groups. The low-level origin was significantly less common among Africans compared with the other population groups (P = 0.003) and the high-level origin was significantly more common in Africans (P = 0.003). A midlevel origin was similar in all three groups. The shape of the mesocolon attachment was either straight (94), inverted U-shaped (79), or inverted V-shaped (38). The straight shape was more common in Whites (Whites vs. African and Indian P = 0.003), and the U-shape more common in Africans (African vs. Whites P = 0.042). The distribution of the V-shape was similar. There are anatomical variations in the level of origin of the sigmoid colon from the descending colon as well as in the shape of the attachment of its mesocolon. These variations are population based.

Granulomas in acquired immunodeficiency syndrome-associated cutaneous Kaposi sarcoma: evidence for a role for Mycobacterium tuberculosis

BACKGROUND

Co-lesional acquired immunodeficiency syndrome-associated cutaneous Kaposi sarcoma (AIDS-KS) and Mycobacterium tuberculosis-associated granulomatous inflammation are undocumented.

METHOD

Retrospective appraisal of skin biopsies with co-lesional AIDS-KS and microscopic tuberculosis (TB).

RESULTS

Sixteen biopsies from nine males and seven females form the study cohort. Histological assessment confirmed nodular and plaque KS in 12 and 4 cases each, respectively. Necrotizing, non-necrotizing and a combination of necrotizing and non-necrotizing granulomatous inflammation were present in nine, two and five biopsies each, respectively. The identification of acid fast bacilli on Ziehl-Neelsen staining and M. tuberculosis on polymerase chain reaction confirmed co-lesional TB in 15/16 biopsies. Co-lesional AIDS-KS and lichen scrofulosorum, hitherto undocumented, were confirmed in one biopsy. The histopathological findings served as a marker of human immunodeficiency virus (HIV) infection, visceral TB, therapeutic noncompliance and multidrug resistant pulmonary TB in nine, eight, five and one patient, respectively. M. tuberculosis was cultured from sputum or nodal tissue of all patients.

CONCLUSION

Granulomatous inflammation in KS requires optimal histopathological and molecular investigation to confirm an M. tuberculosis origin. The cutaneous co-lesional occurrence of AIDS-KS and microscopic TB may serve as the sentinel clue to HIV infection, systemic TB, therapeutic noncompliance or multidrug resistant TB.

Pancreaticoduodenal injuries: re-evaluating current management approaches

BACKGROUND

Pancreaticoduodenal injuries are uncommon owing to the protected position of the pancreas and duodenum in the retroperitoneum. Management depends on the extent of injury. This study was undertaken to document outcome of pancreaticoduodenal injuries and to re-evaluate our approach.

PATIENTS AND METHODS

A prospective study of all patients treated for pancreaticoduodenal trauma in one surgical ward at King Edward VIII hospital over a 7-year period (1998 - 2004). Demographic data, clinical presentation, findings at laparotomy and outcome were documented. Prophylactic antibiotics were given at induction of anaesthesia.

RESULTS

A total of 488 patients underwent laparotomy over this period, 43 (9%) of whom (all males) had pancreatic and duodenal injuries. Injury mechanisms were gunshot (30), stabbing (10) and blunt trauma (3). Their mean age was 30.1+9.6 years. Delay before laparotomy was 12.8+29.1 hours. Seven were admitted in shock. Mean Injury Severity Score (ISS) was 14+8.6. Management of 20 duodenal injuries was primary repair (14), repair and pyloric exclusion (3) and conservative (3). Management of 15 pancreatic injuries was drainage alone (13), conservative management of pseudocyst (1) and distal pancreatectomy (1). Management of 8 combined pancreaticoduodenal injuries was primary duodenal repair and pancreatic drainage (5) and repair with pyloric exclusion of duodenal injury and pancreatic drainage (3). Twenty-one patients (49%) developed complications, and 28 required ICU admission with a median ICU stay of 4 days. Ten patients died (23%). Mean hospital stay was 18.3+24.4 days.

CONCLUSIONS

The overall mortality was comparable with that in the world literature. We still recommend adequate exploration of the pancreas and duodenum and conservative operative management where possible.

Nonzero quadrupole moments of candidate tetrahedral bands

Negative-parity bands in the vicinity of 156Gd and 160Yb have been suggested as candidates for the rotation of tetrahedral nuclei. We report the observation of the odd and even-spin members of the lowest energy negative-parity bands in 160Yb and 154Gd. The properties of these bands are similar to the proposed tetrahedral band of 156Gd and its even-spin partner. Band-mixing calculations are performed and absolute and relative quadrupole moments deduced for 160Yb and 154Gd. The values are inconsistent with zero, as required for tetrahedral shape, and the bands are interpreted as octupole vibrational bands. The failure to observe the in-band E2 transitions of the bands at low spins can be understood using the measured B(E1) and B(E2) values.

Current management of large bowel injuries and factors influencing outcome

BACKGROUND

Colonic and intra-peritoneal rectal injuries may be managed by primary repair and extra-peritoneal rectal injuries by diverting colostomy. This study was undertaken to document our experience with this approach and to identify factors which might impact on outcome.

PATIENTS AND METHODS

Prospective study of all patients treated for colon and rectal injuries in one surgical ward at King Edward VIII hospital, Durban, over a 7-year period (1998-2004). Demographic data, clinical presentation, findings at laparotomy and outcome were documented.

RESULTS

Of 488 patients undergoing laparotomy, 177 (36%) had injuries to the colon and rectum with age 29.8+/-10.9 years. Injury mechanisms were firearms (118) stabs (54) and blunt trauma (5). Delay before laparotomy was 10+/-9.3 h. Complication and mortality rates were 36% and 17%, respectively. 68 patients (38%) required ICU management. Shock on admission and increased transfusion requirements were associated with a significantly increased mortality. Patients with delay < or = 12 h before laparotomy had a higher mortality rate than those with delay >12 h. The mortality rate increased with the number of associated injuries and it was higher the higher the Injury Severity Score (ISS); it was similar for stabs, firearms and blunt trauma. Hospital stay was 9.5+/-9.2 days.

CONCLUSION

We reaffirm that primary repair is appropriate for colonic and intra-peritoneal rectal injuries and that extra-peritoneal rectal injuries require diverting colostomy. Shock on admission, increased blood transfusion requirements, associated organ injury and severity of the injury were associated with high mortality.