Evaluation of nasogastric tube fixation methods: adhesion, displacement and skin integrity.

OBJECTIVE: to evaluate three methods of nasogastric tube fixation in terms of adhesion, displacement and skin integrity. METHOD: ex vivo study, with a sample of 30 experimental noses (10 for each type of fixation), developed with porcine skin, based on the average measurements of the human nose, in which 14-gauge polyvinyl chloride probes were inserted and 2 methods of fixation with adhesive tape (Fixation A and B) and one with an industrial device (Fixation C) were used. Each group was exposed to traction of 50, 100 and 500g sequentially over 12 and 24 hours, testing: adhesion capacity, probe displacement and skin integrity. The Chi-square test of independence was calculated for nominal variables and Student's t-tests and analysis of variance (p< 0.05) for rational variables. RESULTS: fixation B showed lower adhesion capacity (p <0.001) when compared to the other two fixations. A mean displacement of 52.17 mm was observed in the probes fixed by methods A and B and a greater occurrence of lesions associated with fixations A and C (p = 0.001). CONCLUSION: the results show complications related to the fixations: lack of adhesion, displacement of the probe and skin lesions, drawing attention to the complexity of the procedure.

Evaluation of nasogastric tube fixation methods: adhesion, displacement and skin integrity / Evaluación de los métodos de fijación de sonda nasogástrica: adherencia, desplazamiento e integridad de la piel / Avaliação dos métodos de fixação de sonda nasogástrica: adesão, deslocamento e integridade da pele

Objective: to evaluate three methods of nasogastric tube fixation in terms of adhesion, displacement and skin integrity. Method: ex vivo study, with a sample of 30 experimental noses (10 for each type of fixation), developed with porcine skin, based on the average measurements of the human nose, in which 14-gauge polyvinyl chloride probes were inserted and 2 methods of fixation with adhesive tape (Fixation A and B) and one with an industrial device (Fixation C) were used. Each group was exposed to traction of 50, 100 and 500g sequentially over 12 and 24 hours, testing: adhesion capacity, probe displacement and skin integrity. The Chi-square test of independence was calculated for nominal variables and Student's t-tests and analysis of variance (p< 0.05) for rational variables. Results: fixation B showed lower adhesion capacity (p <0.001) when compared to the other two fixations. A mean displacement of 52.17 mm was observed in the probes fixed by methods A and B and a greater occurrence of lesions associated with fixations A and C (p = 0.001). Conclusion: the results show complications related to the fixations: lack of adhesion, displacement of the probe and skin lesions, drawing attention to the complexity of the procedure.

Objetivo: evaluar tres métodos de fijación de sonda nasogástrica en cuanto a adherencia, desplazamiento e integridad de la piel. Método: estudio ex vivo , con una muestra de 30 narices experimentales (10 para cada tipo de fijación), desarrolladas con piel porcina, a partir de las medidas medias de la nariz humana, en las cuales se introdujeron sondas de poli cloruro de vinilo calibre 14 y se utilizaron 2 métodos de fijación con esparadrapo (Fijador A y B), y uno con dispositivo industrial (Fijador C). Cada grupo fue expuesto a tracción de 50, 100 y 500g secuencialmente en el período de 12 y 24 horas, testeándose: capacidad de adherencia, desplazamiento de la sonda e integridad de la piel. Se calculó el test Chi-cuadrado de independencia para variables nominales y pruebas t-Student y Análisis de varianza (p< 0,05) para las racionales. Resultados: el fijador B presentó capacidad inferior de adherencia (p <0,001) cuando comparado a los otros dos fijadores. Se observó un desplazamiento medio de 52,17 mm en las sondas fijadas por los métodos A y B y una mayor ocurrencia de lesiones asociadas a los fijadores A y C (p = 0,001). Conclusión: los resultados atestiguan complicaciones relacionadas a los fijadores: falta de adherencia, desplazamiento de la sonda y lesiones de piel, llamando atención para la complejidad del procedimiento.

Objetivo: avaliar três métodos de fixação de sonda nasogástrica quanto à adesão, deslocamento e integridade da pele. Método: estudo ex vivo , com uma amostra de 30 narizes experimentais (10 para cada tipo de fixação), desenvolvidos com pele suína, a partir das medidas médias do nariz humano, nos quais foram introduzidas sondas de poli cloreto de vinila calibre 14 e utilizados dois métodos de fixação com esparadrapo (Fixador A e B), e, um com dispositivo industrial (Fixador C). Cada grupo foi exposto à tração de 50, 100 e 500g sequencialmente no período de 12 e 24 horas, testando-se: capacidade de adesão, deslocamento da sonda e integridade da pele. Calculou-se o teste Qui-quadrado de independência para variáveis nominais e testes t-Student e Análise de variância (p< 0,05) para as racionais. Resultados: o fixador B apresentou capacidade inferior de adesão (p <0,001) quando comparado aos outros dois fixadores. Observou-se um deslocamento médio de 52,17 mm nas sondas fixadas pelos métodos A e B e uma maior ocorrência de lesões associadas aos fixadores A e C (p = 0,001). Conclusão: os resultados atestam para complicações relacionadas aos fixadores: falta de adesão, deslocamento da sonda e lesões de pele chamando atenção para complexidade do procedimento.