Comparison of the Accuracy of Noninvasive Hemoglobin Monitoring by Spectrophotometry (SpHb) and HemoCue® with Automated Laboratory Hemoglobin Measurement

Abstract

Taking automated laboratory hemoglobin measurement as a reference, the study shows that SpHb monitoring with Radical-7® gives lower readings than does the HemoCue® for assessment of hemoglobin concentration during hemorrhagic surgery.

Improved non-invasive total haemoglobin measurements after in-vivo adjustment

“…Therefore, whether or not SpHb is sufficiently accurate has been controversial in the peri-operative period. It had been hoped that the sensors would be revised or another solution would be developed [4][5][6][7][8]. Our simple in-vivo adjustment method may help resolve some of the issues with sensors and further develop the efficacy of SpHb.…”

“…Several studies measuring SpHb in healthy volunteers exposed to haemodilution [1], surgical patients [2] and patients in the intensive care unit [3] have demonstrated acceptable values compared with laboratory total haemoglobin concentrations (tHb). However, there have also been differences in SpHb and tHb values measured in patients undergoing volume loading [4], major urologic surgery [5] and caesarean section [6], and after cardiac surgery [7]. Thus, whether or not SpHb is sufficiently accurate for clinical use remains controversial and a correction method or a newer developed sensor has been desired.…”

Continuous monitoring of haemoglobin concentration after in-vivo adjustment in patients undergoing surgery with blood loss

“…Its performance has been evaluated in emergency departments, intensive care units and in the operating theatre with conflicting results [1][2][3][4][5][6][7][8][9][10]. Thus, the utility of SpHb for transfusion decision-making remains unproven.…”

The Accuracy and Reliability of Non-Invasive Haemoglobin Measurements in the Emergency Room: a Small Prospective Observational Quality Control Study from a Swiss University Hospital ED

“…Advanced signal processing algorithms and unique adaptive filters work together to quantify haemoglobin concentrations [5,6]. The portable Pronto-7 Pulse CO-Oximeter (Masimo Corp. Irvine CA, USA) was developed for spot-checks of haemoglobin (SpHb) concentrations in patients with trauma (including brain or arterial polytrauma) or gastric bleeding, as well as for triage of patients with different levels of anaemia at emergency departments.…”

“…Blood loss is typically monitored by sequential phlebotomy assessments of haemoglobin concentrations [6]. The repetitive withdrawal of blood needed for laboratory haemoglobin (LabHb) measurements has a number of drawbacks, as it is invasive to the patient [5,7], exposes health workers to biohazards [4,5], and incurs considerable time and costs [8].…”