The importance of blood sampling site for determination of hemoglobin and biochemistry values in major abdominal and orthopedic surgery

Is Intestinal Gluconeogenesis a Key Factor in the Early Changes in Glucose Homeostasis Following Gastric Bypass?

“…Our belief that central venous blood glucose concentration approximates arterial glucose concentration which was measured by Troy et al is substantiated by the work of Evron et al, who demonstrated no significant difference in glucose concentrations measured at these two sites in 100 patients before and after major abdominal surgery [14].…”

A Comparison of Three Methods of Hemoglobin Monitoring in Patients Undergoing Spine Surgery

“…Had the samples been from peripheral venous blood samples, the results may not have been so consistently similar to laboratory Co-Oximeter readings. 14, 15 We observed an apparent relationship between the accuracy and variability of the SpHb and the PI (Fig. 5).…”

“…Several physiologic variables such as body position, blood source (e.g., arterial vs. peripheral venous), and time may influence the accuracy of tHb. [13][14][15] To eliminate some of these variables, we used the same sampling site (radial artery), time, and body position (prone) in all patients. The overall variability for the measurement of tHb in our Medical Center's central laboratory is consistently small (coefficient of variation: 0.8%-1.0%).…”

The Accuracy of Noninvasive Hemoglobin Measurement by Multiwavelength Pulse Oximetry After Cardiac Surgery

“…We also wanted to prevent any possibility of "false" anemia induced by hemodilution around venous lines. Nevertheless, it is interesting to note that Evron et al 23 reported no significant differences between the Hb concentrations obtained from various sampling sites (peripheral vein, central vein, and radial artery) or at different times.…”