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Vol. 35. Issue 2.
Pages 60-63 (February 1999)
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Vol. 35. Issue 2.
Pages 60-63 (February 1999)
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Efectos de la oxigenoterapia líquida portátil sobre la deambulación
Effects of portable liquid oxygen therapy on walking
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J.A. Córdoba Doña*, A. Rosano Romero**
* Servicio de Medicina Preventiva y Epidemiología. Hospital Universitario Puerta del Mar. Cádiz
** Servicio de Medicina Preventiva, Delegación Provincial de Salud. Cádiz
A. Arnedillo Muñoz1, A. León Jiménez, J.J. Fernández Berni
Sección de Neumología. Hospital Universitario Puerta del Mar, Cádiz
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Los efectos de la oxigenoterapia líquida portátil (OLP) sobre la deambulación, con el esfuerzo que supone cargar con el dispositivo portátil, no están totalmente aclarados. Nuestro objetivo ha sido evaluar la repercusión de la OLP sobre la deambulación, utilizando para ello la prueba de marcha de 6 minutos. Se estudiaron 30 pacientes en tratamiento con oxigenoterapia domiciliaria (OD), a los que se les realizaron una gasometría arterial basal, una espirometría y tres pruebas de marcha de 6 minutos, la primera basal, y posteriormente aleatorizadas y cruzadas, una con aire comprimido simulando oxígeno y otra con oxígeno líquido (OL). Durante la realización de las pruebas, se midieron la frecuencia cardíaca máxima, la distancia recorrida, la disnea mediante la escala de Borg, la saturación de oxígeno (SatO2) media y el tiempo que los pacientes estuvieron por encima del 89% de saturación. Comparando las pruebas basales con las realizadas con aire comprimido, no se observaron mejorías en ninguno de los parámetros evaluados. Sin embargo, sí se observó un aumento de la distancia recorrida en las pruebas con OL, comparadas con las basales, así como la corrección de la SatO2 al flujo prescrito. La disnea no se modificó significativamente.

Palabras clave:
Oxigenoterapia domiciliaria
Oxígeno líquido
Oxigenoterapia portátil
Prueba de marcha de 6 minutos

The effect on walking of portable liquid oxygen therapy. (PLOT), which involves carrying a tank, remains unclear. Our aim was to evaluate the repercussion of PLOT on performance in the 6 minute walking test. We enrolled 30 patients receiving home oxygen therapy in a randomized cross-over study, collecting data on arterial blood gases at baseline, spirometry, and performance on the 6 minute walking test at baseline and at later sessions with PLOT and with compressed air simulating oxygen. During the tests we measured peak heart rate, distance walked and time that oxygen saturation remained over 89%. For compressed air, no improvement over baseline values was observed for any of the parameters measured. During the PLOT tests, however, patients walked farther than at baseline and arterial oxygen saturation rose to the prescribed flow rate. Dyspnea was not significantly affected.

Key words:
Domiciliary oxygen therapy
Liquid oxygen
Portable oxygen therapy
6 minutes walking test
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Copyright © 1999. Sociedad Española de Neumología y Cirugía Torácica
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