• Arch Cardiol Mex · Jul 2014

    [Concordance between central venous and arterial blood gases in post-surgical myocardial revascularization patients in stable condition].

    • Luis Efren Santos-Martínez, Marlene Guevara-Carrasco, Guillermo Naranjo-Ricoy, Francisco Martín Baranda-Tovar, Luis Antonio Moreno-Ruíz, Marco Antonio Herrera-Velázquez, José Antonio Magaña-Serrano, Jesús Salvador Valencia-Sánchez, and Moisés Cutiel Calderón-Abbo.
    • Departamento de Hipertensión Pulmonar y Función Ventricular Derecha, Unidad Médica de Alta Especialidad, Hospital de Cardiología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, México DF, México; Cuidados Intensivos Posquirúrgicos Cardiovasculares, Instituto Nacional de Cardiología Ignacio Chávez, Secretaría de Salud, México DF, México. Electronic address: luis.santosma@imss.gob.mx.
    • Arch Cardiol Mex. 2014 Jul 1;84(3):147-54.

    ObjectiveThe concordance between the parameters of arterial and central venous blood gases has not been defined yet. We studied the concordance between both parameters in post-surgical myocardial revascularization patients in stable condition.MethodsConsecutive subjects were studied in a cross-sectional design. The position of the central venous catheter was performed and simultaneously we obtained arterial and central venous blood samples prior to discharge from the intensive care unit. Data are expressed according to Bland-Altman statistical method and the intraclass correlation coefficient. Statistical result was accepted at P<.05.ResultsTwo hundred and six samples were studied of 103 post-surgical patients, pH and lactate had a mean difference (limits of agreement) 0.029±0.048 (-0018, 0.077) and -0.12±0.22 (-0.57, 0.33) respectively. The magnitude of the intraclass correlation coefficient was 0.904 and 0.943 respectively. The values related to oxygen pressure were 27.86±6.08 (15.9, 39.8) and oxygen saturation 33.02±6.13 (21, 45), with magnitude of 0.258 and 0.418 respectively.ConclusionThe best matching parameters between arterial and central venous blood samples were pH and lactate.Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

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