PadrÃo regional de ventilaÃÃo pulmonar durante as tÃcnicas do Breathstacking e InspirÃmetro de Incentivo pela inalaÃÃo de radioaerossol

AUTOR(ES)

Denise Maria SÃ Machado Diniz

DATA DE PUBLICAÇÃO

2003

RESUMO

The sustained maximal inspiration (SMI) maneuver was utilyzed in oreder to improve ventilation through the incentive spirometries (IS). The breath-stacking (BS) technique which is an alternative to the IS and it does not require the patients acquaintance. The aim of this study was to analyze the regional pattern of the lung deposition, using the BS and IS techniques and correlate the maximum volume reached with the index of radioaerosol deposition (DI). Eighteen healthy volunteers aging 22,72Â2,96 years, were studied in Universidade Federal de Pernambuco, Instituto de Medicina Nuclear de Fortaleza and Faculdade Integrada do CearÃ. We have measured the pulmonar volume reached and the capture of scintigraphic images, during the application of the techniques. The radioaerosol used was the 99mTcDTPA. After inhalation, one obtained images from the scitigraph camera. A scintigraph measure of spontaneous respiration, referred to as control image (C), was performed. Regions of interest were delimited (ROIs) and analysed the vertical and horizontal gradients. For the statistical analysis one has used ANOVA test t-student paired, and Pearson correlation. For the total group the IS technique favored the deposition in the middle third (p=0.03) and central region (p<0.001), and the BS in the lower (p=0.04) and peripheral (p<0.001). For male subjects the deposition in the upper third (p=0.04) was favored by the IS. It did occur correlation between the reached lung volume during the application of the techniques. Our results suggest that the IS technique provides a radioaerosol deposition regional pattern in the central airways, while the BS in the small caliber airways.

ASSUNTO(S)

respiraÃÃo artificial ventilaÃÃo pulmonar 99mtc-dtpa terapia respiratÃria pulmonary ventilation sustained maximal inspiration fisiologia incentive spirometry breath-stacking scintigraphic and aerosol

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