Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/125467
Title: | Peripheral venous blood gases and pulse-oximetry in acute cardiogenic pulmonary oedema |
Author: | Masip, Josep (Masip i Utset) Mendoza, D. de Planas, K. Paez, J. Sanchez, B. Cancio, B. |
Keywords: | Insuficiència cardíaca Malalties cardiovasculars Oxigen en l'organisme Edema pulmonar Heart failure Cardiovascular diseases Oxygen in the body Pulmonary edema |
Issue Date: | 1-Dec-2012 |
Publisher: | SAGE Publications |
Abstract: | Background: The role of venous blood gases as an alternative to arterial blood gases in patients with severe acute heart failure has not been established. Objective: To assess the correlation between arterial and peripheral venous blood gases together with pulse-oximetry (SpO2), as well as to estimate arterial values from venous samples in the first hours upon admission of patients with acute cardiogenic pulmonary oedema. Methods: Simultaneous venous and arterial blood samples were extracted on admission and over the next 1, 2, 3, 4, and 10 hours. SpO2 was also registered at the same intervals. Results: A total of 178 pairs of samples were obtained from 34 consecutive patients with acute cardiogenic pulmonary oedema. Arterial and venous blood gases followed a parallel course in the first hours, showing high correlation rates at all time intervals. Venous samples underestimated pH (mean difference −0.028) and overestimated CO2 (+5.1 mmHg) and bicarbonate (+1 mEq/l). Conversely, SpO2 tended to underestimate SaO2 (mean±SD: 93.1±9.1 vs. 94.2±8.4). Applying simple mathematical formulae based on these differences, arterial values were empirically calculated from venous samples, showing acceptable agreement in the Bland−Altman test. Likewise, a venous pH <7.32, pCO2 >51.3 mmHg, and bicarbonate <22.8 mEq/l could fairly identify arterial acidosis, either respiratory or metabolic, with a test accuracy of 92, 68, and 91%, respectively. Conclusions: In patients with cardiogenic pulmonary oedema, arterial blood gas disturbances may be estimated from peripheral venous samples. By monitoring SpO2 simultaneously, arterial punctures could often be avoided |
Note: | Versió postprint del document publicat a: https://doi.org/10.1177/2048872612457087 |
It is part of: | European Heart Journal: Acute Cardiovascular Care, 2012, vol. 1, num. 4, p. 275-280 |
URI: | http://hdl.handle.net/2445/125467 |
Related resource: | https://doi.org/10.1177/2048872612457087 |
ISSN: | 2048-8726 |
Appears in Collections: | Articles publicats en revistes (Medicina) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
662377.pdf | 298.88 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.