Pre and post-pulmonary thromboendarterectomies capnographic variables.
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.
Moreira
Marcos Mello
MM
Department of Surgery - Faculdade de Ciências Médicas da Universidade Estadual de Campinas.
Terzi
Renato Giusepe Giovani
RG
Vieira
Reinaldo Wilson
RW
Petrucci Junior
Orlando
O
Paschoal
Ilma Aparecida
IA
Oliveira
Pedro Paulo Martins de
PP
Vilarinho
Karlos Alexandre de Souza
KA
Braile
Domingo Marcolino
DM
D000328:Adult; D000368:Aged; D019296:Capnography / Q000379:methods*; D002245:Carbon Dioxide / Q000097:blood; D003937:Diagnosis, Differential; D004691:Endarterectomy; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis; D008297:Male; D011182:Postoperative Care; D011300:Preoperative Care; D011650:Pulmonary Alveoli / Q000503:physiopathology; D011651:Pulmonary Artery / Q000601:surgery; D011655:Pulmonary Embolism / Q000175:diagnosis / Q000601:surgery*; D012126:Respiratory Dead Space; D012129:Respiratory Function Tests
D002245:Carbon Dioxide