Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/39652
Type: Artigo de periódico
Title: Variáveis capnográficas pré e pós-tromboendarterectomias pulmonares
Title Alternative: Pre and post-pulmonary thromboendarterectomies campnographic variables
Author: Moreira, Marcos Mello
Terzi, Renato Giusepe Giovani
Vieira, Reinaldo Wilson
Petrucci Junior, Orlando
Paschoal, Ilma Aparecida
Oliveira, Pedro Paulo Martins de
Vilarinho, Karlos Alexandre de Souza
Braile, Domingo Marcolino
Abstract: In these case report, the results of late dead space fraction (fDlate), end-tidal alveolar dead space fraction (AVDSf), arterial-alveolar gradient CO2 [P(a-et)CO2], and slope phase 3 of spirogram of two patients who underwent thromboendarterectomy for pulmonary embolism (PE) are shown. PE was diagnosed by pulmonary scintigraphy, helical tomography, and pulmonary angiography. The calculation of fDlate, AVDSf and P(a-et)CO2 was based on volumetric capnography associated with arterial blood gas analysis. The pre-operative fDlate of the first patient was 0.16 (cutoff 0.12) and AVDSf was 0.30 (cutoff 0.15). However, the fDlate of the second patient was false-negative (0.01) but, the AVDSf was positive (0.28). Postoperative fDlate of the first patient was -0.04 and AVDSf was 0.16; for the second patient, the values were 0.07 and 0.28, respectively. The association of these capnographic variables with image exams reinforces the importance of this noninvasive diagnosis method.
Este relato de dois casos com os resultados da fração tardia de espaço morto (fDlate), fração do espaço morto alveolar end-tidal (AVDSf), gradiente artério-alveolar de CO2 [P(a-et)CO2] e slope da fase 3 do espirograma, submetidos à tromboendarterectomia pulmonar por tromboembolismo pulmonar (TEP). O TEP foi diagnosticado pela cintilografia pulmonar, tomografia helicoidal computadorizada e por arteriografia pulmonar. O cálculo da fDlate, AVDSf e P(a-et)CO2 baseou-se na capnografia volumétrica associada à gasometria arterial. A fDlate préoperatória do primeiro paciente foi de 0,16 (cutoff de 0,12) e a AVDSf = 0,30 (cutoff de 0,15). Já a fDlate do segundo paciente resultou falso-negativa (0,01), embora a AVDSf resultasse positiva (0,28). A fDlate pós-operatória do primeiro paciente foi de -0,04 e a AVDSf de 0,16; a fDlate do segundo paciente foi de 0,07 e a AVDSf = 0,28. A associação destas variáveis com os exames por imagem reforça a importância deste método como ferramenta diagnóstica não-invasiva no diagnóstico de TEP.
Subject: Embolia pulmonar
Troca gasosa pulmonar
Capnografia
Pulmonary embolism
Pulmonary gas exchange
Capnography
Editor: Sociedade Brasileira de Cirurgia Cardiovascular
Rights: aberto
Identifier DOI: 10.1590/S0102-76382007000400022
Address: http://dx.doi.org/10.1590/S0102-76382007000400022
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382007000400022
Date Issue: 1-Dec-2007
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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