scholarly journals Correlation of arterial blood gas measurement with peripheral venous blood gas values in adults patients admitted in ICU

2017 ◽  
Vol 5 (3) ◽  
pp. 11-17
Author(s):  
S Adhikari ◽  
S K Shrestha ◽  
B Srivastava ◽  
N B KC ◽  
B B Singh ◽  
...  
Keyword(s):  
Venous Blood ◽  
Gas Analysis ◽  
Care Practice ◽  
Blood Gas ◽  
Acid Base ◽  
Arterial Blood Gas ◽  
Peripheral Venous Blood ◽  
Arterial Blood ◽  
Acid Base Status ◽  
Venous Blood Gas

Arterial blood gas (ABG) sampling is an essential investigation for assessment of acid-base status, oxygenation and ventilation in critical care practice. Arterial puncture to obtain arterial blood is more invasive procedure than venous and has more potential complications. To find out the correlation between arterial and peripheral venous blood gas values for pH, PCO2 and bicarbonate. Patients admitted in ICU requiring arterial blood gas analysis to determine their acid-base status or ventilatory status was included in the study. One milliliter of venous blood was obtained in a heparin flushed syringe within 5 minutes of getting arterial blood sample. Both labeled samples were processed immediately. Data were analyzed by student’s t-test. A total of 50 paired samples from 36 patients were evaluated. The mean differences between arterial and venous blood gas values for pH, PCO2 and bicarbonate were 0.02 units, -2.37 mmHg and -0.45 mEq/L respectively. Similarly, the correlation coefficients between arterial and venous parameters were 0.964, 0.881 and 0.906 for pH, PCO2 and bicarbonate respectively, which were statistically significant (p<0.001). Venous pH, PCO2 and bicarbonate showed a very high level of correlation with the respective arterial values.

scholarly journals Investigation of the Utility of Peripheral Venous Blood Gas Instead of Arterial Blood Gas in The Emergency Department

2013 ◽  
Vol 3 (2) ◽  
pp. 29-33
Author(s):  
Ertan Bakoğlu ◽  
Ali Sedat Kebapçıoğlu ◽  
Ahmet Ak ◽  
Abdullah Sadık Girişgin ◽  
İsmail Zararsız
Keyword(s):  
Emergency Department ◽  
Venous Blood ◽  
Blood Gas ◽  
Arterial Blood Gas ◽  
Peripheral Venous Blood ◽  
Arterial Blood ◽  
Venous Blood Gas

Assessing Acid–Base Status in Circulatory Failure: Relationship Between Arterial and Peripheral Venous Blood Gas Measurements in Hypovolemic Shock

2018 ◽  
Vol 35 (5) ◽  
pp. 511-518
Author(s):  
Scott E. Rudkin ◽  
Craig L. Anderson ◽  
Tristan R. Grogan ◽  
David A. Elashoff ◽  
Richard M. Treger
Keyword(s):  
Venous Blood ◽  
Hypovolemic Shock ◽  
Circulatory Failure ◽  
Blood Gas ◽  
Central Venous ◽  
Acid Base ◽  
Arterial Blood ◽  
Acid Base Status ◽  
Venous Blood Gas ◽  
The Relationship

Background and Objectives: In severe circulatory failure agreement between arterial and mixed venous or central venous values is poor; venous values are more reflective of tissue acid–base imbalance. No prior study has examined the relationship between peripheral venous blood gas (VBG) values and arterial blood gas (ABG) values in hemodynamic compromise. The objective of this study was to examine the correlation between hemodynamic parameters, specifically systolic blood pressure (SBP) and the arterial–peripheral venous (A-PV) difference for all commonly used acid–base parameters (pH, Pco 2, and bicarbonate). Design, Setting, Participants, and Measurements: Data were obtained prospectively from adult patients with trauma. When an ABG was obtained for clinical purposes, a VBG was drawn as soon as possible. Patients were excluded if the ABG and VBG were drawn >10 minutes apart. Results: The correlations between A-PV pH, A-PV Pco 2, and A-PV bicarbonate and SBP were not statistically significant ( P = .55, .17, and .09, respectively). Although patients with hypotension had a lower mean arterial and peripheral venous pH and bicarbonate compared to hemodynamically stable patients, mean A-PV differences for pH and Pco 2 were not statistically different ( P = .24 and .16, respectively) between hypotensive and normotensive groups. Conclusions: In hypovolemic shock, the peripheral VBG does not demonstrate a higher CO2 concentration and lower pH compared to arterial blood. Therefore, the peripheral VBG is not a surrogate for the tissue acid–base status in hypovolemic shock, likely due to peripheral vasoconstriction and central shunting of blood to essential organs. This contrasts with the selective venous respiratory acidosis previously demonstrated in central venous and mixed venous measurements in circulatory failure, which is more reflective of acid–base imbalance at the tissue level than arterial blood. Further work needs to be done to better define the relationship between ABG and both central and peripheral VBG values in various types of shock.

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