analisis del signo de hoover en relacion con parametros funcionales, radiologicos y de radio de curvatura en pacientes con enfermedad pulmonar obstructiva cronica

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ID: 224252
2003
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Abstract
El propósito del presente trabajo fue: 1) relacionar el signo de Hoover SH (+) con diversos parámetros funcionales (espirometría y volúmenes pulmonares) y radiológicos (radiografías posteroan-teriores), 2) caracterizar los cambios en el radio de curvatura y la eficiencia del diafragma, y restablecer relaciones con los parámetros funcionales y radiológicos. Se estudiaron 15 pacientes con EPOC (SH (+), n: 8). El radio de curvatura fue determinado en el hemidiafragma derecho en inspiración y espiración máximas. Los SH(+) se hallaron más severamente obstruidos (VEF1%, p 0.005%) y con mayor atrapamiento aéreo (VR/CPT %, p 0.01). El radio espiratorio (Re) fue mayor (p 0.05), y su eficiencia (1/Re), fue menor (p 0.05). El VEF1% correlacionó con el grado de hiperinflación según CPT % (r -0.58, p 0.022) y con el atrapamiento aéreo según VR% (r -0.77, p 0.0008). Los pacientes con menor VEF1% presentaron un Re mayor (r -0. 61, p 0.015) y menor eficiencia diafragmática en espiración (1/Re) de acuerdo a: 1/Re = 0.093 cm-1 + 0.0012 cm-1 * VEF1% (r 0.688, p 0.0054). El VEF1 correlacionó con la movilidad diafragmática (r 0.71, p 0.003). La PaCO2 correlacionó con la CPT % (r 0.534, p 0.04), con el VR % (r 0.62, p 0.014) y con los parámetros radiológicos de hiperinflación (r 0.546, p 0.035) y atrapamiento aéreo (r 0.528, p 0.043). El SH(+) sugiere obstrucción bronquial severa, aplanamiento del diafragma, consiguiente aumento del radio de curvatura, menor movilidad y menor eficiencia.
The purpose of the present study was: 1) to relate the Hoover sign -SH (+)- with several functional (spirometry and lung volumes) and radiographic (AP x-ray) parameters, 2) to characterize the changes in diaphragmatic curvature radius and the efficiency and to establish some relationships with the functional and radiographic parameters. Fifteen patients with COPD (SH (+), n: 8) were studied. The radius was determined in the right hemidiaphragm after maximal inspired and expired x-ray. The SH (+) was found in more severely obstructed patients (FEV1%, p 0.005%) and with high degree of air trapping (RV/ TLC %, p 0.01). The expiratory radius (Re) was higher (p 0.05), and their efficiency (1/ Re), was minor (p 0.05). The FEV1% correlated with the degree of hyperinflation according to TLC% (r -0.58, p 0.022) and with air trapping according to RV % (r -0.77, p 0.0008). The patients with low FEV1% showed high Re (r- 0.61, p 0.015) and decreased diaphragmatic efficiency during expiration (1/ Re) according to 1/Re = 0.093 cm-1 + 0.0012 cm-1 * FEV1% (r 0.688, p 0.0054). The FEV1 correlated with the diaphragmatic movement (r 0.71, p 0.003). The PaCO2 correlated with the TLC % (r 0.534, p 0.04), the RV% (r 0.62, p 0.014) and with the radiographic parameters of hyperinflation (r 0.546, p 0.035) and air trapping (r 0.528, p 0.043). The presence of Hoover sign suggest severe bronchial obstruction, diaphragmatic flattening, increase of curvature radius, decrease of mobility and efficiency.
Reference Key
capria2003medicinaanalisis Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;M. E. Capria;C. D'Negri;E. L. De Vito
Journal proceedings on: 2016 ieee central america and panama student conference, conescapan 2016
Year 2003
DOI
DOI not found
URL
http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0025-76802003000500001
Keywords
copd diaphragm allergyinfectious and parasitic diseases

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