Prototype for thoracic and abdominal instrumentalizeted cirtometry / Protótipo para cirtometria torácica e abdominal instrumentalizada

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

The aim of this work was to build and to validate an instrument to evaluate the breathing musculature through the difference of the thoracic and abdominal perimeter during the breathing and an evaluation procedure for the same. The study was characterized as experimental research and technological development. The collections were accomplished in the Laboratory of Biomechanics of CEFID/UDESC with 10 healthy individuals, students of CEFID, age between 20 and 30 years. Some of the procedures adopted for the process of validation were the theoretical validity, the experimental validity, the calibration of the sensor and the definition of the procedure to be used in the collections. The prototype was built being used a displacement encoder with digital processing and resolution of 5,9 points/mm. The acquisition of the data was made through the program AmLabII, that is an acquisition system, processing and storage of signs and data, management events and it works in real time, availabling data in the digital and analogical form. Two collection procedures were accomplished, one in that the measures of PImáx. and PEmáx they were accomplished simultaneously with the measures of thoracic displacement, in spine decubitus, and other in that these measures were done separately, first the pressure measures, in the seated position, and after the displacement, in spine decubitus. To determine the validity and the trustworth of the equipment, being followed the principle of lineal measures; and to the measures of variation of the thoracic and abdominal perimeter obtained for the experimental validity, the descriptive statistics was used ( x , s and CV%). To verify if there was correlation among the measures of variation of the perimeter with the breathing pressures the correlation of Pearson it was applied, with p 0,05. The results found in the protocols 1 and 2 indicate that is necessary to reformulate the protocol that will be adopted, in way to optimize the method. In relation to the construction of the prototype, this met the expectations with relationship to the possibility of registering the variation of the width of the thoraco-abdominal movements for the difference of the perimeter. The system presented a high resolution and good linearity of the measures, however, it is needed to accomplish more tests to verify the repeatetibility of the measures and your consistence. With relationship to the procedures adopted in the protocols 1 and 2, it is believed that the instrument and the method are viable, however there is need to verify the number of repetitions adopted is enough and which assists the clinical needs better of the protocols. It was also observed the need of modifying the position adopted for collects of the measures of breathing pressures and of the variation of the thoracoabdominal perimeters, so that are possible more trustworthy comparisons with other methods of breathing evaluation. A correlation significant statiscly wasnt obtained among the measures of breathing pressures with the variation of the thoraco-abdominal perimeter in the protocol 1, however, being traced the graphs of the pressure by the displacement obtained vii indications of the possibility of obtaining the indulgence. That idea was reinforced starting from the experimental calculation accomplished with a system that simulates the human breathing. However, it is needed more studies to arrive to the ideal number of repetitions and later how to obtain those parameters in humans.

ASSUNTO(S)

respiração cirtometria tóraco-abdominal complacência breathing evaluation breathing engenharia biomédica indulgence avaliação respiratória educacao fisica thoraco-abdominal cirtometry

ACESSO AO ARTIGO

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