Made available in DSpace on 2015-04-14T13:33:00Z (GMT). No. of bitstreams: 1
443017.pdf: 2210506 bytes, checksum: 3a7acd28aaf707a50f139c101de1198b (MD5)
Previous issue date: 2012-01-23 / Objective : To compare the effectiveness of two techniques of respiratory therapy in an experimental model of atelectasis by bronchial obstruction in newborn pigs. Methods : 24 pigs were analgesiados, sedated, tracheostomized and mechanically ventilated. For the induction of atelectasis, artificial mucus was infused (ethylene oxide, Sigma-Aldrich , USA) using an infusion pump through the tracheal tube with the pigs in the lateral position and inclined to the 30th. Confirmation of atelectasis was a chest X-ray or by a pressure drop of oxygen in arterial blood. After the animals were divided into 3 groups: group 1 that received tracheal aspiration after 20 minutes of confirmation of atelectasis, group 2 underwent the technique of bag squeezing over tracheal aspiration and group 3 received vibration chest. To evaluate the effectiveness of techniques one second X-ray was done. To evaluate the changes during the procedures were performed arterial blood gases and pulmonary mechanics evaluation pneumotachograph before and after the induction of atelectasis immediately and 30 minutes after the procedure. Results : The mean percentage change in the PO2 was statistically detect significant between the groups (control: 97,80?37,33, bag squeezing: 166,75?68,63 e vibration: 104,41?45,45, p=0,0408), with improvement in oxygenation in the group undergoing the technique of squeezing bag. The remaining variables did not differ. Conclusions : the results suggest that the technique of squeezing bag is more efficient than manual vibration, but clinical improvement was not accompanied by detectable radiological improvement. / Objetivo : comparar a efic?cia de duas t?cnicas de fisioterapia respirat?ria, em modelo experimental de atelectasia, por obstru??o br?nquica em su?nos rec?m-nascidos. M?todos : 24 su?nos foram analgesiados, sedados, traqueostomizados e ventilados mecanicamente. Para a indu??o da atelectasia, foi infundido muco artificial Poli (oxido de etileno), (Sigma- Aldrich , Estados Unidos), com bomba de infus?o, atrav?s do tubo traqueal ,com os su?nos posicionados em dec?bito lateral, com inclina??o de 30o. A produ??o de atelectasia foi confirmada atrav?s de radiologia tor?cica. Para tanto, os animais foram divididos em 3 grupos: o grupo 1 recebeu apenas aspira??o traqueal ap?s 20 minutos da confirma??o da atelectasia; o grupo 2 foi submetido ? t?cnica de bag squeezing seguida de aspira??o traqueal; e o grupo 3 recebeu vibra??o tor?cica seguida de aspira??o traqueal. A efic?cia das t?cnicas foi avaliada atrav?s de exame radiol?gico, feito por dois radiologistas independentes. Para avaliar as altera??es durante os procedimentos, foram feitas gasometria arterial e avalia??o da mec?nica pulmonar antes e depois da indu??o de atelectasia, bem como imediatamente e 30 minutos ap?s os procedimentos. Resultados : a m?dia da varia??o percentual da PO2 foi estatisticamente significante entre os grupos (controle: 97,80?37,33, bag squeezing: 166,75?68,63 e vibra??o: 104,41?45,45, p=0,0408), evidenciando melhora na oxigena??o para o grupo submetido a t?cnica de bag squeezing. As demais vari?veis analisadas n?o apresentaram diferen?as significativas. Conclus?es : os resultados sugerem que a t?cnica de bag squeezing seja mais eficiente do que a vibra??o manual, por?m a melhora cl?nica n?o foi acompanhada de melhora radiol?gica detect?vel.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/1401 |
| Date | 23 January 2012 |
| Creators | Padoin, Priscila Gularte |
| Contributors | Fiori, Humberto Holmer |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Medicina/Pediatria e Sa?de da Crian?a, PUCRS, BR, Faculdade de Medicina |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Unknown |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 3098206005268432148, 500, 600, -8624664729441623247 |
Page generated in 0.0025 seconds