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Mwachiro M, Parker R, Lando J, Simel I, Chol N, Ranketi S, Chepkwony R, Pyego L, Chepkirui C, Chepkemoi W, Fleischer D, Dawsey S, Topazian M, Burgert S, White R. Predictors of adverse events and early mortality after esophageal stent placement in a low resource setting: a series of 3823 patients in Kenya. Endosc Int Open 2022; 10:E479-E487. [PMID: 35433219 PMCID: PMC9010091 DOI: 10.1055/a-1783-9829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 01/11/2022] [Indexed: 12/24/2022] Open
Abstract
Background and study aims Dysphagia from esophageal cancer may be palliated with self-expanding metallic stents (SEMS). Controversy exists about the use of dilation before SEMS deployment. Patients and methods We performed a retrospective cohort study of patients who had SEMS placement without fluoroscopy for palliation at Tenwek Hospital in Bomet, Kenya between January 1999 and April 2019. The primary outcome was any serious adverse event (AE) (chest pain, stent migration, perforation, bleeding, or all-cause mortality) within 30 days of the procedure. Various demographic and clinical characteristics, and procedural details, were examined as risk factors. Technical success, defined as correct SEMS placement, and clinical success, defined as dysphagia score improvement without 30-day mortality, were examined. Results A total of 3823 patients underwent SEMS placement, with 2844 (74.4 %) placed in the second decade of the study. Technical and clinical success were achieved in 97.2 % and 95.5 %, respectively, with mean dysphagia scores improving from 3.4 (SD 0.6) to 0.9 (SD 1.3) post-stent placement. AEs occurred in 169 patients (4.4 %). AEs, specifically perforations, were associated with dilation to greater than 36F in the first decade. Perforation rates decreased from the first (4.1 %) to the second decade (0.2 %). Only 30% had complete 30-day follow-up data. Conclusions SEMS placement is a safe, effective method of palliating malignant dysphagia, with low rates of AEs and 30-day mortality and high rates of clinical and technical success. Dilation can facilitate placement of SEMS without fluoroscopy but should not be performed above 36F due to the risk of perforation.
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Affiliation(s)
- Michael Mwachiro
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Robert Parker
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya,Department of Surgery; Alpert Medical School of Brown University; Providence, Rhode Island, United States
| | - Justus Lando
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Ian Simel
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Nyail Chol
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Sinkeet Ranketi
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Robert Chepkwony
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Linus Pyego
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Caren Chepkirui
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Winnie Chepkemoi
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - David Fleischer
- Division of Gastroenterology and Hepatology, Mayo Clinic, Phoenix, Arizona, United States
| | - Sanford Dawsey
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Mark Topazian
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, United States
| | - Steve Burgert
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya
| | - Russell White
- Department of Endoscopy and Surgery, Tenwek Hospital, Bomet, Kenya,Department of Surgery; Alpert Medical School of Brown University; Providence, Rhode Island, United States
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Mushi BP, Mwachiro MM, Buckle G, Kaimila BN, Mulima G, Kayamba V, Kelly P, Akoko L, Mmbaga EJ, Selekwa M, Ringo Y, Pritchett N, White RE, Topazian MD, Fleischer DE, Dawsey SM, Van Loon K. Improving Access to Self-Expanding Metal Stents for Patients With Esophageal Cancer in Eastern Africa: A Stepwise Implementation Strategy. JCO Glob Oncol 2021; 7:118-126. [PMID: 33449802 PMCID: PMC8081508 DOI: 10.1200/go.20.00318] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/29/2020] [Accepted: 10/29/2020] [Indexed: 01/25/2023] Open
Abstract
PURPOSE The eastern corridor of Africa is affected by a high burden of esophageal cancer (EC), with > 90% of patients presenting with advanced disease. Self-expanding metal stents (SEMS) have been previously reported as safe and effective for palliation of malignant dysphagia in resource-limited settings; however, access is limited throughout Eastern Africa. METHODS In response to demand for palliative interventions for patients with dysphagia because of EC, the African Esophageal Cancer Consortium (AfrECC) partnered with the Clinton Health Access Initiative to improve access to SEMS in Eastern Africa. We undertook a stepwise implementation approach to (1) identify barriers to SEMS access, (2) conduct a market analysis, (3) select an industry partner, (4) establish regulatory and procurement processes, (5) develop endoscopic training resources, (6) create a medical device registry, and (7) establish principles of accountability. RESULTS Following an evaluation of market demand and potential SEMS manufacturers, Boston Scientific Corporation announced its commitment to launch an access program to provide esophageal SEMS to patients in Tanzania, Kenya, Malawi, and Zambia at a subsidized price. Parallel regulatory and procurement processes were established in each participating country. Endoscopy training courses were designed and conducted, using the Training-of-Trainers model. A device registry was created to centralize data for quality control and to monitor channels of SEMS distribution. Principles of accountability were developed to guide the sustainability of this endeavor. CONCLUSION The AfrECC Stent Access Initiative is an example of a multisector partnership formed to provide an innovative solution to align regional needs with a supply chain for a high-priority medical device.
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Affiliation(s)
- Beatrice P. Mushi
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | | | - Geoffrey Buckle
- Global Cancer Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco (UCSF), San Francisco, CA
| | | | | | | | - Paul Kelly
- University of Zambia School of Medicine, Lusaka, Zambia
| | - Larry Akoko
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Elia J. Mmbaga
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Msiba Selekwa
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Yona Ringo
- Muhimbili National Hospital, Dar es Salaam, Tanzania
| | - Natalie Pritchett
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | | | | | | | - Sanford M. Dawsey
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Katherine Van Loon
- Global Cancer Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco (UCSF), San Francisco, CA
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