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1.
Cancer Causes Control ; 34(2): 161-169, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36355273

RESUMEN

AIM: Lynch Syndrome (LS) individuals have a 25-75% lifetime risk of developing colorectal cancer. Colonoscopy screening decreases this risk. This study compared the cost of Strategy 1: screening colonoscopy for 1st degree relatives of patients that met the Revised Bethesda Criteria (i.e., probands) to Strategy 2: screening colonoscopy for 1st degree relatives of probands with genetic mutations for Lynch Syndrome based in a resource-constrained health care system. METHOD: A comparative, health care provider perspective, cost analysis was conducted at a tertiary hospital, using a micro-costing, ingredient approach. Forty probands that underwent genetic testing between November 01, 2014 and October 30, 2015 and their first-degree relatives were costed according to Strategy 1 and Strategy 2. Unit costs of colonoscopy and genetic testing were estimated and used to calculate and compare the total costs per strategy in South African rand (R) converted to UK pounds (£). Sensitivity analyses were performed on colonoscopy adherence, relatives' positivity, and variable discount rates. RESULTS: The cost for Strategy 1 amounted to £653 344/R6 161 035 compared to £49 327/R 465 155 for Strategy 2 (Discount rate 3%; Adherence 75%; and Positivity rate of relatives 45%). Base case analysis indicated a difference of 92% less in the total cost for Strategy 2 compared to Strategy 1. Sensitivity analyses showed that the difference in cost between the two strategies was not sensitive to variations in adherence, positivity or discount rates. CONCLUSION: Colonoscopy screening for LS and at-risk family members was tenfold less costly when combined with genetic analysis. The logistics of rolling out this strategy nationally should be investigated.


Asunto(s)
Neoplasias Colorrectales Hereditarias sin Poliposis , Neoplasias Colorrectales , Humanos , Neoplasias Colorrectales Hereditarias sin Poliposis/diagnóstico , Neoplasias Colorrectales Hereditarias sin Poliposis/epidemiología , Neoplasias Colorrectales Hereditarias sin Poliposis/genética , Sudáfrica , Centros de Atención Terciaria , Detección Precoz del Cáncer , Análisis Costo-Beneficio , Neoplasias Colorrectales/diagnóstico , Neoplasias Colorrectales/epidemiología , Neoplasias Colorrectales/genética , Colonoscopía , Tamizaje Masivo
2.
Gastroenterology ; 160(1): 99-114.e3, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-32294476

RESUMEN

BACKGROUND & AIMS: Although functional gastrointestinal disorders (FGIDs), now called disorders of gut-brain interaction, have major economic effects on health care systems and adversely affect quality of life, little is known about their global prevalence and distribution. We investigated the prevalence of and factors associated with 22 FGIDs, in 33 countries on 6 continents. METHODS: Data were collected via the Internet in 24 countries, personal interviews in 7 countries, and both in 2 countries, using the Rome IV diagnostic questionnaire, Rome III irritable bowel syndrome questions, and 80 items to identify variables associated with FGIDs. Data collection methods differed for Internet and household groups, so data analyses were conducted and reported separately. RESULTS: Among the 73,076 adult respondents (49.5% women), diagnostic criteria were met for at least 1 FGID by 40.3% persons who completed the Internet surveys (95% confidence interval [CI], 39.9-40.7) and 20.7% of persons who completed the household surveys (95% CI, 20.2-21.3). FGIDs were more prevalent among women than men, based on responses to the Internet survey (odds ratio, 1.7; 95% CI, 1.6-1.7) and household survey (odds ratio, 1.3; 95% CI, 1.3-1.4). FGIDs were associated with lower quality of life and more frequent doctor visits. Proportions of subjects with irritable bowel syndrome were lower when the Rome IV criteria were used, compared with the Rome III criteria, in the Internet survey (4.1% vs 10.1%) and household survey (1.5% vs 3.5%). CONCLUSIONS: In a large-scale multinational study, we found that more than 40% of persons worldwide have FGIDs, which affect quality of life and health care use. Although the absolute prevalence was higher among Internet respondents, similar trends and relative distributions were found in people who completed Internet vs personal interviews.


Asunto(s)
Enfermedades Gastrointestinales/epidemiología , Salud Global , Adolescente , Adulto , Distribución por Edad , Anciano , Femenino , Enfermedades Gastrointestinales/diagnóstico , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Distribución por Sexo , Encuestas y Cuestionarios , Adulto Joven
3.
HPB (Oxford) ; 24(11): 1989-1993, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35985970

RESUMEN

BACKGROUND: This prospective study compared scoring systems in predicting adverse outcomes in HIV associated acute pancreatitis (HIV+ve AP) METHODS: Systemic inflammatory response syndrome (SIRS), Glasgow criteria, C-reactive protein (CRP), bedside index of severity in acute pancreatitis (BISAP) and APACHE II scores using standard cut-off values were used to predict the endpoint of moderate and severe disease in HIV-ve and HIV+ve patients and in CD4 counts above and below 200 cells/mm3. RESULTS: Ninety (38%) of 238 patients with AP were HIV+ve. Fifteen had organ failure, 33 local complications and 12 patients died. Advanced age was not associated with severe disease. The APACHE II was the best predictor of severe disease in HIV+ve (AUC 0.88) and HIV-ve patients (AUC 0.81) and CRP was the poorest predictor (AUC 0.59) in HIV+ve patients. In HIV+ve patients with CD4 counts greater and less than 200 cells/mm3 the Glasgow and APACHE II scores were the best prognosticators (AUC > 0.8) and BISAP in patients with CD4 > 200 cells/mm3 (AUC 0.90). CONCLUSION: The APACHE II score was most effective irrespective of HIV status whereas the BISAP scores was better in CD4 > 200 cells/mm3.


Asunto(s)
Infecciones por VIH , Pancreatitis , Humanos , Pancreatitis/complicaciones , Pancreatitis/diagnóstico , Enfermedad Aguda , Estudios Prospectivos , Infecciones por VIH/complicaciones , Infecciones por VIH/diagnóstico , Valor Predictivo de las Pruebas , Índice de Severidad de la Enfermedad , Estudios Retrospectivos , Pronóstico , Proteína C-Reactiva/análisis
4.
J Clin Gastroenterol ; 54(10): 833-840, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32909973

RESUMEN

Performance of endoscopic procedures is associated with a risk of infection from COVID-19. This risk can be reduced by the use of personal protective equipment (PPE). However, shortage of PPE has emerged as an important issue in managing the pandemic in both traditionally high and low-resource areas. A group of clinicians and researchers from thirteen countries representing low, middle, and high-income areas has developed recommendations for optimal utilization of PPE before, during, and after gastrointestinal endoscopy with particular reference to low-resource situations. We determined that there is limited flexibility with regard to the utilization of PPE between ideal and low-resource settings. Some compromises are possible, especially with regard to PPE use, during endoscopic procedures. We have, therefore, also stressed the need to prevent transmission of COVID-19 by measures other than PPE and to conserve PPE by reduction of patient volume, limiting procedures to urgent or emergent, and reducing the number of staff and trainees involved in procedures. This guidance aims to optimize utilization of PPE and protection of health care providers.


Asunto(s)
Infecciones por Coronavirus/prevención & control , Endoscopía Gastrointestinal/economía , Recursos en Salud/economía , Transmisión de Enfermedad Infecciosa de Paciente a Profesional/prevención & control , Pandemias/prevención & control , Equipo de Protección Personal/normas , Neumonía Viral/prevención & control , Guías de Práctica Clínica como Asunto , COVID-19 , Infecciones por Coronavirus/epidemiología , Endoscopía Gastrointestinal/estadística & datos numéricos , Femenino , Gastroenterología/normas , Salud Global , Humanos , Control de Infecciones/organización & administración , Internacionalidad , Masculino , Salud Laboral/estadística & datos numéricos , Pandemias/estadística & datos numéricos , Equipo de Protección Personal/estadística & datos numéricos , Neumonía Viral/epidemiología , Pobreza , Sociedades Médicas
5.
World J Surg ; 39(1): 70-9, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25167900

RESUMEN

INTRODUCTION: The quantification and analysis of adverse events is essential to benchmark surgical outcomes and establish a foundation for quality improvement interventions. We developed a hybrid electronic medical record (HEMR) system for the accurate collection and integration of data into a structured morbidity and mortality (M&M) meeting. METHODOLOGY: The HEMR system was implemented on January 1, 2013. It included a mechanism to capture and classify adverse events using the ICD-10 coding system. This was achieved by both prospective reporting by clients and by retrospective sentinel-event-trawling performed by administrators. RESULTS: From January 1, 2013 to March 20, 2014, 6,217 patients were admitted within the tertiary surgical service of Greys Hospital. A total of 1,314 (21.1 %) adverse events and 315 (5.1 %) deaths were recorded. The adverse events were divided into 875 "pathology-related" morbidities and 439 "error-related" morbidities. Pathology-related morbidities included 725 systemic complications and 150 operative complications. Error-related morbidities included 257 cognitive errors, 158 (2.5 %) iatrogenic injuries, and 24 (1.3 %) missed injuries. Error accounted for 439 (33 %) of the total number of adverse events. A total of 938 (71.4 %) adverse events were captured prospectively, whereas the remaining 376 (28.6 %) were captured retrospectively. The ICD-10 coding system was found to have some limitations in its classification of adverse events. CONCLUSIONS: The HEMR system has provided the necessary platform within our service to benchmark the incidence of adverse events. The use of the international ICD-10 coding system has identified some limitations in its ability to classify and categorise adverse events in surgery.


Asunto(s)
Países en Desarrollo , Registros Electrónicos de Salud/organización & administración , Errores Médicos/estadística & datos numéricos , Procedimientos Quirúrgicos Operativos/efectos adversos , Sistemas de Computación , Humanos , Incidencia , Estudios Prospectivos , Estudios Retrospectivos , Sudáfrica
6.
World J Surg ; 37(1): 156-61, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23015223

RESUMEN

BACKGROUND: The etiology of acute pancreatitis can be difficult to determine early in the course of the disease. The aim of the present study was to determine the relationship between biochemical parameters and the cause of acute pancreatitis. METHODS: A prospectively collected database of patients admitted with acute pancreatitis between 2001 and 2008 was analyzed. The relationships between etiology and age, sex, admission serum amylase level, and admission alanine transaminase (ALT) level were evaluated. RESULTS: Acute pancreatitis was diagnosed in 464 patients. The disease was related to alcohol in 275 cases, gallstones in 81 cases, HIV in 49 cases, dyslipidemia in 42 cases, and it was idiopathic in 17 cases. Alcoholic pancreatitis was more common in men, whereas the other identifiable causes were more common in women (P < 0.001). Mean age at presentation was 39 years with no difference in age in relation to etiology (P = 0.057). When compared to patients with non-biliary causes of pancreatitis, patients with gallstone pancreatitis had greater median (range) serum amylase activity [1,423 U/l (153-7,500 U/l) versus 589 U/l (58-11,144 U/l); P < 0.001] and ALT activity [153 U/l (8-13,233 U/l) versus 31 U/l (6-421 U/l); P < 0.001]. No significant differences in amylase or ALT activity were found between non-biliary etiologies (P > 0.05). Alanine transaminase was the only factor independent of sex to predict gallstone etiology, with activity >150 U/l having a specificity of 97 %. CONCLUSIONS: In patients with acute gallstone pancreatitis, the serum amylase and ALT activities were more than double those of other etiologies. An ALT level of >150 U/l was highly predictive of gallstone etiology independent of gender. Neither amylase nor ALT could differentiate non-biliary etiologies. The combination of amylase and ALT offered no improvement in predicting etiology over each alone.


Asunto(s)
Alanina Transaminasa/sangre , Amilasas/sangre , Cálculos Biliares/sangre , Cálculos Biliares/diagnóstico , Pancreatitis/sangre , Pancreatitis/diagnóstico , Enfermedad Aguda , Adulto , Femenino , Cálculos Biliares/complicaciones , Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología , Humanos , Masculino , Pancreatitis/etiología , Valor Predictivo de las Pruebas , Prevalencia , Estudios Prospectivos
7.
S Afr J Surg ; 51(4): 122-6, 2013 Oct 22.
Artículo en Inglés | MEDLINE | ID: mdl-24209695

RESUMEN

BACKGROUND: Several authors have suggested that the traditional surgical morbidity and mortality meeting be developed as a tool to identify surgical errors and turn them into learning opportunities for staff. We report our experience with these meetings. METHODS: A structured template was developed for each morbidity and mortality meeting. We used a grid to analyse mortality and classify the death as: (i) death expected/death unexpected; and (ii) death unpreventable/death preventable. Individual cases were then analysed using a combination of error taxonomies. RESULTS: During the period June - December 2011, a total of 400 acute admissions (195 trauma and 205 non-trauma) were managed at Edendale Hospital, Pietermaritzburg, South Africa. During this period, 20 morbidity and mortality meetings were held, at which 30 patients were discussed. There were 10 deaths, of which 5 were unexpected and potentially avoidable. A total of 43 errors were recognised, all in the domain of the acute admissions ward. There were 33 assessment failures, 5 logistical failures, 5 resuscitation failures, 16 errors of execution and 27 errors of planning. Seven patients experienced a number of errors, of whom 5 died. CONCLUSION: Error theory successfully dissected out the contribution of error to adverse events in our institution. Translating this insight into effective strategies to reduce the incidence of error remains a challenge. Using the examples of error identified at the meetings as educational cases may help with initiatives that directly target human error in trauma care.


Asunto(s)
Hospitales/normas , Auditoría Médica/métodos , Errores Médicos/clasificación , Evaluación de Procesos y Resultados en Atención de Salud/métodos , Procedimientos Quirúrgicos Operativos/normas , Adulto , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Errores Médicos/efectos adversos , Persona de Mediana Edad , Sudáfrica , Procedimientos Quirúrgicos Operativos/efectos adversos , Adulto Joven
8.
S Afr J Surg ; 51(4): 116-21, 2013 Oct 25.
Artículo en Inglés | MEDLINE | ID: mdl-24209694

RESUMEN

BACKGROUND: A bile leak is an infrequent but potentially serious complication after biliary tract surgery. Endoscopic intervention is widely accepted as the treatment of choice. This study assessed the effectiveness of endoscopic retrograde cholangiopancreatography (ERCP), sphincterotomy and biliary stenting in the management of postoperative bile leaks. METHODS: An ERCP database in a tertiary referral centre was reviewed retrospectively to identify all patients with bile leaks after laparoscopic cholecystectomy. Patient records and endoscopy reports were reviewed. RESULTS: One hundred and thirteen patients (92 women, 21 men; median age 47 years, range 22 - 82 years) with a bile leak were referred for initial endoscopic management at a median of 12 days (range 2 - 104 days) after surgery. Presenting features included intra-abdominal collections with pain in 58 cases (51.3%), abnormal liver function tests (LFTs) in 22 (19.5%), bile leak in 25 (22.1%), and sepsis in 8 (7.1%). Twenty-nine patients (25.7%) were found to have either major bile duct injuries without duct continuity, vascular injuries or other endoscopic findings requiring surgical or radiological intervention. Of 84 patients managed endoscopically, 44 had a cystic duct (CD) leak, 26 a CD leak and common bile duct (CBD) stones, and 14 a CBD injury amenable to endoscopic stenting. Of the 70 patients with CD leaks (group A), 24 underwent sphincterotomy only (including 8 stone extractions), 43 had a sphincterotomy with stent placement (including 18 stone extractions) and 1 had only a stent placed, while 2 patients with previous sphincterotomies required no further intervention. The average number of ERCPs in group A was 2.3 (range 1 - 7). Of the 14 patients with bile duct injuries treated endoscopically (group B), 7 had a class D, 5 an E5 and 2 a class B injury; 13 patients underwent sphincterotomy and stenting, and 1 had a sphincterotomy only. Group B required an average of 3.6 ERCPs (range 2 - 5). The 113 patients underwent a total of 269 ERCPs (mean 2.4, range 1 - 7). Seven patients had one or more complications related to the ERCP: 3 acute pancreatitis, 2 cholangitis, 2 sphincterotomy bleeds, 1 duodenal perforation and 1 impacted Dormia basket, the latter 2 requiring operative intervention. CONCLUSIONS: Three-quarters of bile leaks after laparoscopic cholecystectomy were due to CD leaks (with or without retained stones) or lesser bile duct injuries and were amenable to definitive endoscopic therapy. Nineteen patients (16.8%) had major injuries that required operative intervention.


Asunto(s)
Conductos Biliares/cirugía , Colangiopancreatografia Retrógrada Endoscópica , Colecistectomía Laparoscópica/efectos adversos , Esfinterotomía Endoscópica , Adulto , Anciano , Anciano de 80 o más Años , Conductos Biliares/lesiones , Colangiopancreatografia Retrógrada Endoscópica/efectos adversos , Femenino , Cálculos Biliares/cirugía , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/cirugía , Estudios Retrospectivos , Stents , Adulto Joven
9.
Neurogastroenterol Motil ; 35(6): e14583, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37018412

RESUMEN

BACKGROUND AND AIMS: The Rome Foundation Global Epidemiology Study (RFGES) assessed the prevalence, burden, and associated factors of Disorders of Gut-Brain Interaction (DGBI) in 33 countries around the world. Achieving worldwide sampling necessitated use of two different surveying methods: In-person household interviews (9 countries) and Internet surveys (26 countries). Two countries, China and Turkey, were surveyed with both methods. This paper examines the differences in the survey results with the two methods, as well as likely reasons for those differences. METHODS: The two RFGES survey methods are described in detail, and differences in DGBI findings summarized for household versus Internet surveys globally, and in more detail for China and Turkey. Logistic regression analysis was used to elucidate factors contributing to these differences. RESULTS: Overall, DGBI were only half as prevalent when assessed with household vs Internet surveys. Similar patterns of methodology-related DGBI differences were seen within both China and Turkey, but prevalence differences between the survey methods were dramatically larger in Turkey. No clear reasons for outcome differences by survey method were identified, although greater relative reduction in bowel and anorectal versus upper gastrointestinal disorders when household versus Internet surveying was used suggests an inhibiting influence of social sensitivity. CONCLUSIONS: The findings strongly indicate that besides affecting data quality, manpower needs and data collection time and costs, the choice of survey method is a substantial determinant of symptom reporting and DGBI prevalence outcomes. This has important implications for future DGBI research and epidemiological research more broadly.


Asunto(s)
Enfermedades Gastrointestinales , Humanos , Ciudad de Roma , Encuestas y Cuestionarios , China/epidemiología , Turquía
10.
Artículo en Inglés | MEDLINE | ID: mdl-32998198

RESUMEN

(1) Oesophageal squamous cell carcinoma is common in Africa and has a male preponderance. The gender-based differences in clinical presentation and risk factor exposure are poorly studied in the African context. Our aim was to compare males and females with this disease. We analyzed the differences in clinical features and risk factor exposure between males and females with oesophageal cancer. (2) Data from patients presenting to a tertiary hospital in South Africa with oesophageal squamous cell carcinoma were analyzed. Data collected included patient demographics, clinical presentation, pathology and risk factor exposure. (3) Three hundred and sixty three patients were included in the study. The male to female ratio was 1.4:1. The mean age was 66 years for females and 61 years for males (p < 0.0001). A significantly larger percentage of males were underweight compared to females (60% vs. 32%, p < 0.001). There were no differences between the genders with regards to performance status, dysphagia grade and duration and tumor length, location and degree of differentiation. There were significant differences between risk factor exposure between the two genders. Smoking and alcohol consumption was an association in more than 70% of males but in less than 10% of females There was no difference survival. (4) Female patients with oesophageal squamous cell carcinoma (OSCC) are older and have a higher body mass index (BMI) than their male counterparts. Traditionally purported risk factors of smoking and alcohol consumption are infrequent associations with OSCC in female patients and other environmental risk factors may be more relevant in this gender.


Asunto(s)
Neoplasias Esofágicas/epidemiología , Carcinoma de Células Escamosas de Esófago/epidemiología , Anciano , Carcinoma de Células Escamosas/epidemiología , Femenino , Humanos , Masculino , Factores de Riesgo , Caracteres Sexuales , Factores Sexuales , Sudáfrica/epidemiología , Centros de Atención Terciaria
11.
PLoS One ; 14(10): e0224023, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31647837

RESUMEN

BACKGROUND: Approximately 25% of colorectal cancer patients in sub-Saharan Africa are younger than 40 years, and hereditary factors may contribute. We investigated the frequency and patterns of inherited colorectal cancer among black Zimbabweans. METHODS: A population-based cross-sectional study of ninety individuals with a new diagnosis of colorectal cancer was carried out in Harare, Zimbabwe between November 2012 and December 2015. Phenotypic data was obtained using interviewer administered questionnaires, and reviewing clinical and pathology data. Cases were screened for mismatch repair deficiency by immunohistochemistry and/or microsatellite instability testing, and for MLH1, MSH2 and EPCAM deletions using multiplex ligation-dependent probe amplification. Next generation sequencing using a 16-gene panel was performed for cases with phenotypic features consistent with familial colorectal cancer. Variants were assessed for pathogenicity using the mean allele frequency, phenotypic features and searching online databases. RESULTS: Three Lynch syndrome cases were identified: MSH2 c.2634G>A pathogenic mutation, c.(1896+1_1897-1)_(*193_?)del , and one fulfilling the Amsterdam criteria, with MLH1 and PMS2 deficiency, but no identifiable pathogenic mutation. Two other cases had a strong family history of cancers, but the exact syndrome was not identified. The prevalence of Lynch syndrome was 3·3% (95% CI 0·7-9·4), and that of familial colorectal cancer was 5·6% (95% CI, 1·8-12·5). CONCLUSIONS: Identifying cases of inherited colorectal cancer in sub-Saharan Africa is feasible, and our findings can inform screening guidelines appropriate to this setting.


Asunto(s)
Población Negra/genética , Neoplasias Colorrectales/genética , Molécula de Adhesión Celular Epitelial/genética , Predisposición Genética a la Enfermedad , Mutación de Línea Germinal , Homólogo 1 de la Proteína MutL/genética , Proteína 2 Homóloga a MutS/genética , Adulto , Edad de Inicio , Neoplasias Colorrectales/epidemiología , Estudios Transversales , Femenino , Humanos , Incidencia , Masculino , Inestabilidad de Microsatélites , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos , Zimbabwe/epidemiología
12.
Eur J Cancer Prev ; 28(3): 145-150, 2019 05.
Artículo en Inglés | MEDLINE | ID: mdl-29649072

RESUMEN

The interplay between hereditary and environmental factors in the causation of colorectal cancer in sub-Saharan Africa is poorly understood. We carried out a community based case-control study to identify the risk factors associated with colorectal cancer in Zimbabwe. We recruited 101 cases of colorectal cancer and 202 controls, matched for age, sex and domicile. Potential risk factors including family history, socioeconomic status, urbanization, diabetes mellitus and previous schistosomiasis were evaluated. Conditional logistic regression was used to estimate the odds ratios associated with the different factors. Cases were more likely to have a tertiary education (32.7 vs. 13.4%, P<0.001) and a higher income (18.8 vs. 6.9%, P=0.002). After multivariate analysis, diabetes mellitus [odds ratio (OR): 5.3; 95% confidence interval (CI): 1.4-19.9; P=0.012], previous urban domicile (OR: 2.8; 95% CI: 1.0-7.8; P=0.042), previous schistosomiasis (OR: 2.4; 95% CI: 1.4-4.2; P=0.001) and cancer in a first-degree relative (OR: 2.4; 95% CI: 1.2-4.8; P=0.018) were associated independently with colorectal cancer. Our findings suggest that family history, diabetes mellitus, previous schistosomiasis and approximation to a western lifestyle are the predominant associations with colorectal cancer in Africans. This offers opportunities for targeted prevention and hypothesis-driven research into the aetiology of colorectal cancer in this population.


Asunto(s)
Población Negra/estadística & datos numéricos , Neoplasias Colorrectales/epidemiología , Neoplasias Colorrectales/etiología , Estudios de Casos y Controles , Femenino , Estudios de Seguimiento , Humanos , Estilo de Vida , Masculino , Persona de Mediana Edad , Pronóstico , Factores de Riesgo , Zimbabwe/epidemiología
16.
Cancer Epidemiol ; 57: 33-38, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30286315

RESUMEN

BACKGROUND: The rising incidence of colorectal cancer in sub-Saharan Africa may be partly caused by changing dietary patterns. We sought to establish the association between dietary patterns and colorectal cancer in Zimbabwe. METHODS: One hundred colorectal cancer cases and 200 community-based controls were recruited. Data were collected using a food frequency questionnaire, and dietary patterns derived by principal component analysis. Generalised linear and logistic regression models were used to assess the associations between dietary patterns, participant characteristics and colorectal cancer. RESULTS: Three main dietary patterns were identified: traditional African, urbanised and processed food. The traditional African diet appeared protective against colorectal cancer (Odds Ratio (OR) 0.35; 95% Confidence Interval (CI), 0.21 - 0.58), which had no association with the urban (OR 0.68; 95% CI, 0.43-1.08), or processed food (OR 0.91; 0.58-1.41) patterns. The traditional African diet was associated with rural domicile, (OR 1.26; 95% CI, 1.00-1.59), and a low income (OR1.48; 95% CI, 1.06-2.08). The urbanised diet was associated with urban domicile (OR 1.70; 95% CI, 1.38-2.10), secondary (OR 1.30; 95% CI, 1.07-1.59) or tertiary education (OR 1.48; 95% CI, 1.11-1.97), and monthly incomes of $201-500 (OR 1.30; 95% CI, 1.05-1.62), and the processed food pattern with tertiary education (OR 1.42; 95% CI, 1.05-1.92), and income >$1000/month (OR 1.48; 95% CI, 1.02-2.15). CONCLUSION: A shift away from protective, traditional African dietary patterns may partly explain the rising incidence of colorectal cancer in sub-Saharan Africa.


Asunto(s)
Neoplasias Colorrectales/epidemiología , Dieta , Adulto , Anciano , Estudios de Casos y Controles , Dieta/efectos adversos , Dieta/estadística & datos numéricos , Femenino , Humanos , Incidencia , Modelos Logísticos , Masculino , Persona de Mediana Edad , Oportunidad Relativa , Factores de Riesgo , Población Rural , Encuestas y Cuestionarios , Zimbabwe/epidemiología
17.
S Afr J Surg ; 45(1): 12-6, 2007 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-17969772

RESUMEN

INTRODUCTION: Jaundice secondary to a malignant hilar obstruction can be relieved by operative bypass or percutaneous stenting. Comparative trials involving these techniques are scarce. We reviewed our experience with these competing techniques in the palliation of malignant hilar obstruction. PATIENTS AND METHODS: All patients with malignant hilar obstruction managed at our institution during the period 1992-2002 were identified for review. RESULTS: A total of 36 deeply jaundiced patients with hilar obstruction were identified. Twenty-two patients underwent exploration with the intention of performing an operative bypass and 14 patients underwent percutaneous transhepatic cholangiography (PTC) with intention to stent. Procedure-related mortality was similar in both groups. Morbidity was much higher in the operative group. Effective symptom relief was achieved with both techniques. In the PTC group recurrent biliary obstruction in 2 patients necessitated salvage non-operative procedures. Although survival rates were slightly longer in the operative group, this was not significant. There were no long-term survivors. CONCLUSION: Operative bypass provides better sustained relief of jaundice than PTC. However long-term survival in both groups is poor and operative bypass is best reserved for younger patients with no technical contraindications. Despite early and late procedural failures PTC is the method of choice for patients with advanced-stage disease and those with significant co-morbidities.


Asunto(s)
Neoplasias del Sistema Biliar/cirugía , Colestasis/etiología , Ictericia/etiología , Anciano , Anciano de 80 o más Años , Anastomosis Quirúrgica , Neoplasias del Sistema Biliar/complicaciones , Neoplasias del Sistema Biliar/patología , Colangiografía/métodos , Colestasis/patología , Colestasis/cirugía , Femenino , Humanos , Ictericia/patología , Ictericia/cirugía , Masculino , Estudios Retrospectivos , Stents
18.
S Afr Med J ; 107(8): 706-709, 2017 Jul 28.
Artículo en Inglés | MEDLINE | ID: mdl-28809620

RESUMEN

BACKGROUND: Acute pancreatitis is common in HIV-positive individuals in reports from regions with a low incidence of HIV infection. This association has not been reported in areas with a high incidence of HIV infection. OBJECTIVE: To examine the prevalence and outcomes of HIV-associated acute pancreatitis in a high HIV prevalence environment, and trends over the period May 2001 - November 2010. METHODS: The records of patients admitted with acute pancreatitis from 2001 to 2010 were reviewed, looking for HIV status, CD4 counts and medications at presentation. The Glasgow criteria, organ failure, local complications and mortality were assessed. RESULTS: One hundred and six (16.9%) of 627 patients admitted with acute pancreatitis during the study period were infected with HIV. Most were female (65.1%) and black African (91.5%). The serum amylase level was used to confirm acute pancreatitis in 50 patients, with a mean of 1 569 IU/L (range 375 - 5 769), and urinary amylase in 56 patients, with a mean of 4 083 IU/L (range 934 - 36 856). Alcohol was a less frequent cause of pancreatitis in the HIV-positive group than in patients who were HIV-negative (24.5% v. 68.3%), and the prevalence of gallstones as a cause was similar (23.6% v. 17.9%). Antiretroviral therapy was associated with pancreatitis in 35.8%, and 6 (5.7%) had abdominal malignancies. Sixteen (15.1%) had pancreatic necrosis, 20 (18.9%) had septic complications, and 6 (5.7%) died. CONCLUSIONS: HIV-associated acute pancreatitis was most frequent in females and black Africans and was associated with malignancy. Mortality was similar in HIV and non-HIV pancreatitis.

19.
Lancet Gastroenterol Hepatol ; 2(5): 377-383, 2017 05.
Artículo en Inglés | MEDLINE | ID: mdl-28397702

RESUMEN

The perception that colorectal cancer is rare in sub-Saharan Africa is widely held; however, it is unclear whether this is due to poor epidemiological data or to lower disease rates. The quality of epidemiological data has somewhat improved, and there is an ongoing transition to western dietary and lifestyle practices associated with colorectal cancer. The impact of these changes on the incidence of colorectal cancer is not as evident as it is with other non-communicable diseases such as diabetes. In this Viewpoint, we discuss the epidemiology of colorectal cancer in sub-Saharan Africa. Colorectal cancer in this region frequently occurs at an early age, often with distinctive histological characteristics. We detail the crucial need for hypothesis-driven research on the risk factors for colorectal cancer in this population and identify key research gaps. Should colorectal cancer occur more frequently than assumed, then commensurate allocation of resources will be needed for diagnosis and treatment.


Asunto(s)
Neoplasias Colorrectales/epidemiología , Adulto , África del Sur del Sahara/epidemiología , Edad de Inicio , Neoplasias Colorrectales/etiología , Neoplasias Colorrectales/genética , Dieta , Femenino , Humanos , Incidencia , Estilo de Vida , Masculino , Persona de Mediana Edad , Factores de Riesgo
20.
World J Gastrointest Surg ; 9(3): 82-91, 2017 Mar 27.
Artículo en Inglés | MEDLINE | ID: mdl-28396721

RESUMEN

AIM: To benchmark severity of complications using the Accordion Severity Grading System (ASGS) in patients undergoing operation for severe pancreatic injuries. METHODS: A prospective institutional database of 461 patients with pancreatic injuries treated from 1990 to 2015 was reviewed. One hundred and thirty patients with AAST grade 3, 4 or 5 pancreatic injuries underwent resection (pancreatoduodenectomy, n = 20, distal pancreatectomy, n = 110), including 30 who had an initial damage control laparotomy (DCL) and later definitive surgery. AAST injury grades, type of pancreatic resection, need for DCL and incidence and ASGS severity of complications were assessed. Uni- and multivariate logistic regression analysis was applied. RESULTS: Overall 238 complications occurred in 95 (73%) patients of which 73% were ASGS grades 3-6. Nineteen patients (14.6%) died. Patients more likely to have complications after pancreatic resection were older, had a revised trauma score (RTS) < 7.8, were shocked on admission, had grade 5 injuries of the head and neck of the pancreas with associated vascular and duodenal injuries, required a DCL, received a larger blood transfusion, had a pancreatoduodenectomy (PD) and repeat laparotomies. Applying univariate logistic regression analysis, mechanism of injury, RTS < 7.8, shock on admission, DCL, increasing AAST grade and type of pancreatic resection were significant variables for complications. Multivariate logistic regression analysis however showed that only age and type of pancreatic resection (PD) were significant. CONCLUSION: This ASGS-based study benchmarked postoperative morbidity after pancreatic resection for trauma. The detailed outcome analysis provided may serve as a reference for future institutional comparisons.

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