El propofol no inhibe la vasoconstricción pulmonar hipóxica

El perfil farmacológico del propofol ha facilitado su uso en la sedación prolongada de pacientes con enfermedad pulmonar en cuidados intensivos. Los efectos del propofol sobre el corazón y la circulación sistémica han sido estudiados con detalle. Sin embargo, sus efectos sobre la circulación pulmona...

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Published inMedicina intensiva Vol. 25; no. 8; pp. 291 - 296
Main Authors Álvarez Ruiz, A.P., Tamayo Lomas, L., Castañeda Casado, F.J.
Format Journal Article
LanguageSpanish
Published Elsevier Espana 2001
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Abstract El perfil farmacológico del propofol ha facilitado su uso en la sedación prolongada de pacientes con enfermedad pulmonar en cuidados intensivos. Los efectos del propofol sobre el corazón y la circulación sistémica han sido estudiados con detalle. Sin embargo, sus efectos sobre la circulación pulmonar son menos conocidos. En este estudio analizamos los efectos del propofol sobre la vasoconstricción pulmonar hipóxica (VPH). Se midieron los cambios de la vasoconstricción pulmonar por hipoxia y angiotensina II antes y tras administrar propofol e intralipid en 42 preparaciones de pulmones aislados de ratas. Propofol e intralipid se aportaron entre dos pares de respuestas a hipoxia (grupos B, C, D y E) y angiotensina (F). El grupo A fue el control. El grupo B fue tratado con 2 μg/ml de propofol; las respuestas a la hipoxia fueron de 10,41 (5,70) mmHg antes de propofol y 11,17 (5,17) mmHg tras propofol (p = 0,096). En el grupo C la concentración de propofol fue de 8 μg/ml y las respuestas fueron de 7,39 (2,37) y 8,75 (2,60) (p = 0,063). En el grupo D, la preparación fue pretratada con azul de metileno (140 μμol/l) y propofol 8 μg/ml, siendo las respuestas de 15,20 (2,28) y 15,60 (3,50) (p = 0,739). En el grupo E, se aportaron 20 μl de intralipid al 20% entre la segunda y tercera respuestas a la hipoxia. La respuesta previa a intralipid fue de 9,82 (3,96) mmHg y de 10,84 (3,68) mmHg las posteriores (p = 0,163). En el grupo F, se estudiaron 2 respuestas a angiotensina II antes y tras propofol 8 μg/ml. Las respuestas fueron de 7,55 (1,87) y 7,94 (2,40) mmHg (p = 0,41), respectivamente. El propofol a las concentraciones estudiadas no modifica la VPH en el pulmón aislado de rata. The pharmacological profile of propofol has facilitated its use in prolonged sedation of critically ill patients with pulmonary disease. The effects of propofol on the heart and on the systemic circulation have been studied in some detail. However, its effects on the pulmonary circulation are less known. In this study we have analyzed the effects of propofol on hypoxic pulmonary vasoconstriction(HPV). Changes of pulmonary vasoconstriction caused by hypoxia and by angiotensin II, after Propofol and Intralipid, were measured in 42 preparations of isolated rat lungs. Propopofol and Intralipid were added between the first two and the last two pairs of response to hypoxia (groups B, C, D, and E) and to angiotensin II (group F). Group A, control. In the group B, Propofol 2 μg/ml, was added. The responses to hypoxia were 10,41 (5,70) mmHg, and 11,17 (5,17) mmHg (p = 0,096). In the group C, Propofol concentrations of 8 μg/ml were used. The responses were 7,39 (2,37) mmHg and 8,75 (2,60) mmHg (p = 0,063). In the group D, the preparation was pretreated with methylene blue (140 μmol/l) and Propofol (8 μg/ml) was added. The responses were 15,20 (2,28), and 15,60 (3,50) mmHg (p = 0,739). In the group E, Intralipid 20% (20 μl/ml) was added between the second and the third response to hypoxia, and the results were 9,82 (3,96) and 10,84 (3,68) mmHg (p = 0,163) respectively. In the group F, responses to angiotensin II were before propofol 7,55 (1,87) mmHg and after propofol 7,94 (2,40) mmHg (p = 0,41). Propofol at the studied concentratations does not change significantly HPV in the isolated rat lung.
AbstractList El perfil farmacológico del propofol ha facilitado su uso en la sedación prolongada de pacientes con enfermedad pulmonar en cuidados intensivos. Los efectos del propofol sobre el corazón y la circulación sistémica han sido estudiados con detalle. Sin embargo, sus efectos sobre la circulación pulmonar son menos conocidos. En este estudio analizamos los efectos del propofol sobre la vasoconstricción pulmonar hipóxica (VPH). Se midieron los cambios de la vasoconstricción pulmonar por hipoxia y angiotensina II antes y tras administrar propofol e intralipid en 42 preparaciones de pulmones aislados de ratas. Propofol e intralipid se aportaron entre dos pares de respuestas a hipoxia (grupos B, C, D y E) y angiotensina (F). El grupo A fue el control. El grupo B fue tratado con 2 μg/ml de propofol; las respuestas a la hipoxia fueron de 10,41 (5,70) mmHg antes de propofol y 11,17 (5,17) mmHg tras propofol (p = 0,096). En el grupo C la concentración de propofol fue de 8 μg/ml y las respuestas fueron de 7,39 (2,37) y 8,75 (2,60) (p = 0,063). En el grupo D, la preparación fue pretratada con azul de metileno (140 μμol/l) y propofol 8 μg/ml, siendo las respuestas de 15,20 (2,28) y 15,60 (3,50) (p = 0,739). En el grupo E, se aportaron 20 μl de intralipid al 20% entre la segunda y tercera respuestas a la hipoxia. La respuesta previa a intralipid fue de 9,82 (3,96) mmHg y de 10,84 (3,68) mmHg las posteriores (p = 0,163). En el grupo F, se estudiaron 2 respuestas a angiotensina II antes y tras propofol 8 μg/ml. Las respuestas fueron de 7,55 (1,87) y 7,94 (2,40) mmHg (p = 0,41), respectivamente. El propofol a las concentraciones estudiadas no modifica la VPH en el pulmón aislado de rata. The pharmacological profile of propofol has facilitated its use in prolonged sedation of critically ill patients with pulmonary disease. The effects of propofol on the heart and on the systemic circulation have been studied in some detail. However, its effects on the pulmonary circulation are less known. In this study we have analyzed the effects of propofol on hypoxic pulmonary vasoconstriction(HPV). Changes of pulmonary vasoconstriction caused by hypoxia and by angiotensin II, after Propofol and Intralipid, were measured in 42 preparations of isolated rat lungs. Propopofol and Intralipid were added between the first two and the last two pairs of response to hypoxia (groups B, C, D, and E) and to angiotensin II (group F). Group A, control. In the group B, Propofol 2 μg/ml, was added. The responses to hypoxia were 10,41 (5,70) mmHg, and 11,17 (5,17) mmHg (p = 0,096). In the group C, Propofol concentrations of 8 μg/ml were used. The responses were 7,39 (2,37) mmHg and 8,75 (2,60) mmHg (p = 0,063). In the group D, the preparation was pretreated with methylene blue (140 μmol/l) and Propofol (8 μg/ml) was added. The responses were 15,20 (2,28), and 15,60 (3,50) mmHg (p = 0,739). In the group E, Intralipid 20% (20 μl/ml) was added between the second and the third response to hypoxia, and the results were 9,82 (3,96) and 10,84 (3,68) mmHg (p = 0,163) respectively. In the group F, responses to angiotensin II were before propofol 7,55 (1,87) mmHg and after propofol 7,94 (2,40) mmHg (p = 0,41). Propofol at the studied concentratations does not change significantly HPV in the isolated rat lung.
Author Tamayo Lomas, L.
Castañeda Casado, F.J.
Álvarez Ruiz, A.P.
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Keywords circulación pulmonar
hypoxia pulmonary vasoconstriction
propofol
pulmonary circulation
vasoconstricción pulmonar hipóxica
intralipid
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Snippet El perfil farmacológico del propofol ha facilitado su uso en la sedación prolongada de pacientes con enfermedad pulmonar en cuidados intensivos. Los efectos...
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SubjectTerms circulación pulmonar
hypoxia pulmonary vasoconstriction
intralipid
propofol
pulmonary circulation
vasoconstricción pulmonar hipóxica
Title El propofol no inhibe la vasoconstricción pulmonar hipóxica
URI https://dx.doi.org/10.1016/S0210-5691(01)79707-0
Volume 25
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