Coluna/Columna (Jun 2010)

Quantas medidas de pressões respiratórias são necessárias para se obterem medidas máximas em pacientes com tetraplegia? ¿Cuántas maniobras son necesarias para llegar a las presiones máximas en pacientes con tetraplejía? How many maneuvers of respiratory pressures are required to obtain maximal values in patients with quadriplegia?

  • Ada Clarice Gastaldi,
  • Getúlio Antonio de Freitas Filho,
  • Ana Paula Manfio Pereira,
  • Janne Marques Silveira

DOI
https://doi.org/10.1590/S1808-18512010000200009
Journal volume & issue
Vol. 9, no. 2
pp. 138 – 144

Abstract

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INTRODUÇÃO: pressões inspiratórias (PImax) ou expiratórias (PEmax) máximas constituem um método simples e não-invasivo para avaliação da força de músculos respiratórios e auxiliam na identificação de fraqueza dos músculos respiratórios, presente em diversas doenças e situações clínicas, como a tetraplegia. OBJETIVO: avaliar o número de manobras necessárias para atingir as pressões máximas em pacientes com tetraplegia. MÉTODOS: oito pacientes com tetraplegia (sete homens), média de idade de 37,8±11,96 anos, com diagnóstico de lesão raquimedular cervical completa realizaram 10 medidas de PImax e PEmax nas posições sentada e deitada, totalizando 320 medidas. Os dados foram comparados pelo teste de Wilcoxon (pINTRODUCCIÓN: las presiones inspiratorias (PImax) y espiratorias (PEmax) máximas constituyen un método simple y no invasivo para evaluar la fuerza de los músculos respiratorios, y ayudan a identificar la debilidad de los músculos respiratorios presente en diferentes enfermedades y situaciones clínicas, como la tetraplejía. OBJETIVO: evaluar el número de maniobras necesarias para llegar a las presiones máximas en pacientes con tetraplejía. MÉTODOS: fueron incluidos ocho pacientes con tetraplejía (siete hombres), con edad media de 37,8±11,96 años y diagnóstico de lesión cervical raquis medular completa, a lo que se le realizaron 10 mediciones de PImax y PEmax en posición sentado y acostado, totalizando 320 mediciones. Los datos fueron comparados por el test de Wilcoxon (pINTRODUCTION: maximum inspiratory (IPmax) and expiratory (EPmax) pressures constitute a simple noninvasive method for evaluation of respiratory muscle strength which helps in the identification of muscle weakness usually present in several diseases and clinical situations, such as quadriplegia. OBJECTIVE: to assess the number of maneuvers needed to achieve maximum pressures in patients with quadriplegia. METHODS: eight quadriplegic patients (seven men) with mean age of 37.8 ± 11.96 years old and presenting with diagnosis of complete spinal cord lesion were submitted to 10 measurements of IPmax and EPmax in both seated and supine positions, totalizing 320 measurements. Data were compared by using the Wilcoxon's test (p<0.05). RESULTS: the 1st and 10th measurements of IPmax and EPmax for seated position ranged from 74.1±15.1 to 74.8±19.8 cmH2O and 32.4±6.8 to 32.4±9.0 cmH2O, respectively; whereas for supine position such measurements ranged from 76.5±18.6 to 91.1±13.3 cmH2O (p<0.05) and 32.5±5.8 to 32.9±5.1 cmH2O, respectively. The results regarding the 3rd and 5th measurements of IPmax for seated position were 81.1±19.5, 81.5±18.8, and 83.0±18.9 cmH2O; whereas EPmax had 35.0±8.2; 35.3±7.9, and 36.8±8.0 cmH2O. IPmax values for seated position were 90.3±17.8, 94.6±16.0, and 97.4±17.8 cmH2O (p<0.05), whereas EPmax had 33.3±5.8, 35.6±5.4, and 36.9±4.9 cmH2O. The highest value occurred from the 6th measurement in 40% of the tests. CONCLUSIONS: To obtain maximum values for respiratory pressures in quadriplegic patients, it is necessary to repeat the measurements at least 10 times for each evaluation.

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