Journal of Clinical and Diagnostic Research, ISSN - 0973 - 709X

Users Online : 19368

Original article / research
Year : 2017 | Month : March | Volume : 11 | Issue : 3 | Page : OC43 - OC46

Agreement and Correlation between Arterial and Central Venous Blood Gas Following Coronary Artery Bypass Graft Surgery

Masoumeh Esmaeilivand, Alireza Khatony, Gholamreza Moradi, Farid Najafi, Alireza Abdi

1. Lecturer, Department of Nursing, School of Nursing and Midwifery, Kermanshah University of Medical Sciences, Kermanshah, Iran. 2. Associate Professor, Department of Nursing, Nursing and Midwifery School, Kermanshah University of Medical Sciences, Kermanshah, Iran. 3. Assistant Professor, Department of Anesthesiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran. 4. Professor, Department of Epidemiology, Research Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, Iran. 5. Assistant Professor, Department of Nursing, School of Nursing and Midwifery, Kermanshah University of Medical Sciences, Kermanshah, Iran.

Correspondence Address :
Dr. Alireza Khatony,
Dolat Abad Street, Kermanshah-6714634698, Iran.
E-mail: akhatony@gmail.com

Abstract

Introduction: Arterial blood sampling, used to assess patients in acute conditions, may result in complications such as thrombosis and embolism. However, it can be replaced by venous blood sampling, but there is a dearth of information on this.

Aim: To assess the correlation and agreement between the arterial and central venous blood gases analyses in patients undergoing elective Coronary Artery Bypass Graft (CABG) surgery.

Materials and Methods: In this cross-sectional study, 100 ICU patients undergoing elective CABG surgery were recruited. 2 mm arterial and a 2 mm venous blood samples were obtained from each patient’s arterial and central venous lines, respectively. To predict Arterial Blood Gas (ABG) values based on central Venous Blood Gas (VBG) values, the linear regression analysis was used and for evaluating their agreement Bland–Altman method was used.

Results: In total of 200 samples were obtained. The mean and Standard Deviation (SD) of age was 58.9±9.1 years and 51% of the participants were female. There was a strong correlation between ABG and central VBG values regarding pH, partial Pressure of Carbon Dioxide (PCO2), Bicarbonate (HCO3) and Base Excess (BE) (r= 0.73, r=0.74, r=0.67 and r=0.71, respectively; p<0.001); however, the correlation between the arterial and venous Partial Pressure of Oxygen (PO2) and Oxygen Saturation (SO2) was moderate (r=0.29, p=0.005 and r=0.27, p=0.006, respectively). The Bland–Altman analysis showed an excellent agreement between all the variables (p<0.001).

Conclusion: Central VBG analysis cannot replace ABG analysis in measuring exact PO2 status, necessitating arterial sampling in some matters, but with respect to the accuracy of pulse oximetry measurements in determining the exact PO2 status, for the rest of the indices a central VBG rather than an ABG can be utilised for determining patient's acid-base status. Particularly in patients who are hospitalised for a long time and have a central venous catheter in place like patients who have undergone CABG, thus reducing the risk and need for invasive arterial sampling.

Keywords

Arterial blood gas, Blood gas analysis, Venous blood, Venous blood gas

How to cite this article :

Masoumeh Esmaeilivand, Alireza Khatony, Gholamreza Moradi, Farid Najafi, Alireza Abdi. AGREEMENT AND CORRELATION BETWEEN ARTERIAL AND CENTRAL VENOUS BLOOD GAS FOLLOWING CORONARY ARTERY BYPASS GRAFT SURGERY. Journal of Clinical and Diagnostic Research [serial online] 2017 March [cited: 2017 May 24 ]; 11:OC43-OC46. Available from
http://www.jcdr.net/back_issues.asp?issn=0973-709x&year=2017&month=March&volume=11&issue=3&page=OC43-OC46&id=9547

DOI and Others

DOI: 10.7860/JCDR/2017/23473.9547


Date of Submission: Aug 11, 2016
Date of Peer Review: Sep 20, 2016
Date of Acceptance: Oct 14, 2016
Date of Publishing: Mar 01, 2017


Financial OR OTHER COMPETING INTERESTS: None.

JCDR is now Monthly and more widely Indexed .
  • PubMed Central® (PMC)New
  • Academic Search Complete Database
  • Chemical Abstracts Service
  • Directory of Open Access Journals (DOAJ)
  • EBSCOhostNew
  • Embase & EMbiology
  • Google Scholar
  • HINARI Access to Research in Health Programme
  • Indian Science Abstracts (ISA)
  • Journal seek Database
  • Open J-Gate
  • Popline (reproductive health literature)
  • SCOPUS
  • www.omnimedicalsearch.com