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Vol. 86. Issue 3.
Pages 171-177 (September 2009)
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Vol. 86. Issue 3.
Pages 171-177 (September 2009)
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Negative-pressure wound therapy versus standard wound dressing in the treatment of diabetic foot amputation. A randomised controlled trial
Curación asistida por presión negativa comparada con curación convencional en el tratamiento del pie diabético amputado. Ensayo clínico aleatorio
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Gustavo Sepúlvedaa,
Corresponding author
dr.gsepulveda@gmail.com

Corresponding author.
, Manuel Espíndolaa, Mauricio Maureiraa, Edgardo Sepúlvedaa, José Ignacio Fernándeza, Claudia Olivaa, Antonio Sanhuezab, Manuel Vialb, Carlos Manterolab
a Servicio de Cirugía Vascular, Hospital Dipreca, Santiago de Chile, Chile
b Departamento de Cirugía y Traumatología, Facultad de Medicina, Univesidad de La Frontera, Temuco, Chile
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Article information
Abstract
Introduction

Foot amputation wounds in patients with diabetes are complex and treatment is often difficult. At the moment negative pressure wound therapy (NPWT) is widely used for the treatment of several types of wounds. Nevertheless, the clinical evidence to support the application of this dressing in foot amputation wounds in patients with diabetes is scarce. The aim of this study was to evaluate the efficacy of NPWT compared with standard wound dressing to treat diabetic foot amputation wounds.

Patients and method

Randomised controlled trial. Diabetic patients aged 18 years or older with a foot amputation wound were assigned to treatment with NPWT (A group) or standard wound dressing (B group). Primary efficacy end point was time in reaching 90% of wound granulation. A size of sample of 11 patients per group was used. NPWT was prepared with a polyurethane ether foam dressing, a Nelaton catheter, a transparent adhesive drape and continuous negative pressure of 100mm Hg. The wound was treated every 48–72 hours and evaluated weekly. Descriptive and analytical statistics were used.

Results

There were 24 patients, with a mean age of 61.8 (9) years (79% men), 12 in each group. The average time to reach 90% of granulation was lower in A group (18.8 [6] days vs 32.3 [13.7] days), a statistically significant difference (P=.007).

Conclusion

NPWT reduces the granulation time of diabetic foot amputation wounds by 40%, compared with the standard wound dressing.

Keywords:
Diabetic foot
Negative-pressure wound therapy
Topical negative pressure therapy
Vacuum assisted closure
Negative-pressure dressings
Resumen
Introducción

Las heridas del pie diabético secundarias a amputación son complejas y de difícil tratamiento. Actualmente, la curación asistida por presión negativa (CAPNE) es ampliamente utilizada para el tratamiento de diversos tipos de heridas. Sin embargo, en la literatura médica hay escasas pruebas científicas sólidas sobre la aplicación de este tipo de curación en heridas del pie diabético amputado. El objetivo de este estudio es comparar la efectividad de la CAPNE con la de la curación convencional en heridas del pie diabético secundarias a amputación.

Pacientes y método

Ensayo clínico aleatorio. Sujetos mayores de 18 años, diabéticos de tipo II, con herida por amputación del pie, asignados a curación con CAPNE (grupo A) o a curación convencional (grupo B). La variable respuesta fue el tiempo en alcanzar el 90% de granulación. Se estimó un tamaño de muestra de 11 pacientes por grupo. La CAPNE se preparó con una espuma de éster de poliuretano, sonda Nelaton n.° 16, apósito transparente adhesivo y aspiración central a 100mmHg. La herida se curó cada 48 a 72h y se evaluó semanalmente. Se utilizó estadística descriptiva y analítica.

Resultados

Veinticuatro sujetos con un promedio de edad de 61,8±9,0 años (79% varones), 12 sujetos en cada grupo. El tiempo promedio para alcanzar el 90% de granulación fue significativamente menor en el grupo A (18,8±6 días frente a 32,3±14 días), p=0,007.

Conclusión

La CAPNE reduce en un 40% el tiempo de granulación de la herida en el pie diabético amputado comparado con el de la curación convencional.

Palabras clave:
Pie diabético
Tratamiento de la herida
por presión negativa
Tratamiento por presión negativa
tópica
Cierre asistido por presión
Curación por presión negativa
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Presented in the 44th Chilean Cardiology and Cardiovascular Surgery Conference. December 2007. Hotel del Mar. Viña del Mar. Chile.

Copyright © 2009. Asociación Española de Cirujanos
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