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Decrease the potential risk of stoma leakage
Stoma complications can occur within one month after surgery but also at a later stage.[1] Some of the contributing factors may be the stoma placement, its characteristics, fistula formation or a high liquid output.[1] When any of these obstacles arise, effluents may irritate the peristomal skin and even seep under the stoma wafer.[2] As a result, the adhesion of the device can be compromised, and the surrounding area may also be irritated.[3]
A convex ostomy bag system can possibly make the appliance adhere better to the surrounding skin to prevent stoma leakage, which is a frequent worry[4,5] for many ostomates. Convex ostomy bag systems are designed to[6,7,8,9]
The choice of soft convexity can bring additional advantages[8,9]
Liquid discharge has the potential to seep into smaller gaps in the skin more easily than formed stool and crosses the skin barrier faster, even with well-protruded stomas. In such cases, convex-shaped products can increase the wear time of the wafer.[2,11]
Depending on individual needs, you always have the option to choose between standard or soft convex stoma bags with deep or medium convexity. B. Braun has a whole range of convex options to suit your patients‘ needs. Find a good solution for each individual patient.
Gently sloping convexity is a feature of all 4 to 6 mm products. It was developed to provide better pressure distribution and to apply sufficient pressure around the stoma to shape and form the patient’s peristomal contours.
To create a higher sense of security, many users recommend the use of a stoma belt to intensify the effect of convexity. Three different attachment positions* allow the belt to match the preferred position of the bag on the abdomen.
The flexible convex wafer allows flat stomas to protrude and to seal stomas in folds. It can even fill in small hollows while simultaneously limiting the peristomal pressure. Moreover, the flexible ring can create a seal around the stoma.
Moderate convexity of 4 mm can help make the stoma protrude.
Moderate convexity of 6 mm can help fill in medium to deep hollows and the folds in the skin.
Moderate convexity of 4 mm can help make the stoma protrude.
Deep convexity can help fill in deep hollows and skin folds.
[1] Malik T, Lee MJ, Harikrishnan AB. The incidence of stoma related morbidity - a systematic review of randomised controlled trials. Ann R Coll Surg Engl. 2018 Sep;100(7):501-508. doi: 10.1308/rcsann.2018.0126. Epub 2018 Aug 16. PMID: 30112948; PMCID: PMC6214073.
[2] Evans M, White P. Selecting convexity to improve and maintain peristomal skin integrity. Br J Nurs. 2020 Sep 10;29(16):S8-S14. doi: 10.12968/bjon.2020.29.16.S8. PMID: 32901550
[3] Andersen NK, Trøjgaard P, Herschend NO, Størling ZM. Automated Assessment of Peristomal Skin Discoloration and Leakage Area Using Artificial Intelligence. Front Artif Intell. 2020 Sep 10;3:72. doi: 10.3389/frai.2020.00072. PMID: 33733189; PMCID: PMC7861335
[4] Rolls N, Yssing C, Bøgelund M, Håkan-Bloch J, de Fries Jensen L. Utilities associated with stoma-related complications: peristomal skin complications and leakages. J Med Econ. 2022 Jan-Dec;25(1):1005-1014. doi: 10.1080/13696998.2022.2101776. PMID: 35833520.
[5] Nafees B, Størling ZM, Hindsberger C, Lloyd A. The ostomy leak impact tool: development and validation of a new patient-reported tool to measure the burden of leakage in ostomy device users. Health Qual Life Outcomes. 2018 Dec 14;16(1):231. doi: 10.1186/s12955-018-1054-0. PMID: 30547808; PMCID: PMC6295083.
[6] Cronin E. A guide to the appropriate use of convex stoma care products. Gastrointestinal Nursing 2013; Vol. 6, No. 2. DOI: 10.12968/gasn.2008.6.2.28803. ISSN: 14795248
[7] Perrin A. Convex stoma appliances: an audit of stoma care nurses. Br J Nurs. 2016 Dec 8;25(22):S10-S15. doi: 10.12968/bjon.2016.25.22.S10. PMID: 27935354.
[8] Hoeflok J, Salvadalena G, Pridham S, Droste W, McNichol L, Gray M. Use of Convexity in Ostomy Care: Results of an International Consensus Meeting. J Wound Ostomy Continence Nurs. 2017 Jan/Feb;44(1):55-62. doi: 10.1097/WON.0000000000000291. PMID: 28002174; PMCID: PMC5266410.
[9] Turnbull GB. 2003. The Ostomy Files: The Convexity Controversy. https://www.hmpgloballearningnetwork.com/site/wmp/content/the-convexity-controversy. Accessed November 1, 2022.
[10] Hoeflok J, Kittscha J, Purnell P. Use of convexity in pouching: a comprehensive review. J Wound Ostomy Continence Nurs. 2013 Sep-Oct;40(5):506-12. doi: 10.1097/WON.0b013e3182a219b7. PMID: 24448619.
[11] Richbourg L, Thorpe JM, Rapp CG. Difficulties experienced by the ostomate after hospital discharge. J Wound Ostomy Continence Nurs. 2007 Jan-Feb;34(1):70-9. doi: 10.1097/00152192-200701000-00011. PMID: 17228210.
* except for Proxima® 2+, which has one hooking position for the belt