Accuracy of a continuous noninvasive hemoglobin monitor in intensive care unit patients*

Frasca, Denis; Dahyot‐Fizelier, Claire; Catherine, Karen; Levrat, Quentin; Debaene, B.; Mimoz, Olivier

doi:10.1097/ccm.0b013e3182227e2d

Cited by 163 publications

(129 citation statements)

References 17 publications

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“…In addition, the number of blood samples and time needed to obtain Hb values can be reduced. Previous studies have demonstrated that SpHb was accurate when compared with laboratory haemoglobin measurements in relatively stable clinical situations [1][2][3] but not in critical situations when Hb data are frequently needed, such as after cardiac surgery [7] or when there is inadequate perfusion [8]. Therefore, whether or not SpHb is sufficiently accurate has been controversial in the peri-operative period.…”

Section: Discussionmentioning

confidence: 99%

“…The new â Pulse CO-Oximeter (Masimo Corp., Irvine, CA, USA) provides continuous, non-invasive measurement of total haemoglobin concentration (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].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2014

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SummaryWe hypothesised that an in-vivo adjustment method and/or a newer sensor would increase the accuracy of non-invasive and continuous haemoglobin monitoring (SpHb) measurements. Two sensors, the R1-25 and R2-25a (the newer version), were used with laboratory total haemoglobin concentration (tHb) values simultaneously recorded. In-vivo adjusted SpHb (AdHb) was calculated by a simple formula: AdHb = SpHb À (1 st SpHb À 1 st tHb). The correlation coefficients between SpHb (or AdHb) and tHb were compared: SpHb in both sensors correlated strongly with tHb (p < 0.0001). In-vivo adjustment improved the correlation coefficient between SpHb and tHb from 0.86 to 0.95 for the R1-25 and from 0.83 to 0.93 for the R2-25a. There was no difference between the R1-25 and R2-25a sensors. The in vivo adjustment method improved the accuracy of SpHb measurements in both sensors.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2014

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“…In addition there were several reports suggesting that the SpHb was significantly correlated with the laboratory Hb during surgical procedures with substantial blood loss [9,10] . The present study revealed that noninvasive SpHb measurement with pulse co-oximetry was significantly correlated with laboratory measurement of Hb.…”

Section: Discussionmentioning

confidence: 99%

“…Agreement between the laboratory Hb and SpHb was evaluated as described by Bland and Altman [5] . The accuracy of the SpHb compared with that of the laboratory Hb was calculated using the accuracy root mean square (Arms) with the formula Square root of( mean bias square + SD square) [6,7] . All statistical analysis was performed with SPSS Version 19.0, with the statistical significance set at P<0.005.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Pulse Co-oximeter in Hemoglobin Estimation: A non invasive method

Bharat

et al. 2017

APALM

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Background: Total Hemoglobin(Hb) measurement is one of the most common and important parameter that is investigated in the laboratory. This non invasive method allows pain free continuous online patient monitoring with minimum risk of infection and facilitates real time data monitoring allowing immediate clinical reaction to the measured data. The objective of the study is to test the efficacy of pulse co-oximeter .Methods: Present study is a prospective comparative study. A total of 261 patients enrolled for the study after their consent. Non invasively measured SpHb values and invasively measured Hb values were then compared by using Bland Altman statistical analysis .Result: Pulse co-oximeter recorded/displayed SpHb in 90.8% patients and did not display SpHb in 9.2% of patients. Out of which 73-75% patients Hb showed variation of less than or equal to 2gms and 20-24% patients Hb showed variation of more than 2 gms. On Bland Altmann comparative analysis of SpHb and Hb revealed bias and limits of agreement was 0.2+3.3gm/d and 95% of the measurements fell within two standard deviation of the mean difference and P value < 0.001 represents good correlation between SpHb and Hb of Lab1 and Lab 2. Conclusion:Pulse co-oximeter can be used as a screening tool for Hb measurement . It determines Hb instantly and non invasively with 73-75% of the values show variation of less than or equal to 2gms. Further studies are needed to determine financial aspects and needs upgradation in terms of accuracy of the instrument.

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“…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.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2015

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SummaryNon-invasive monitoring of haemoglobin concentration provides real-time measurement of haemoglobin concentration (SpHb) using multi-wavelength pulse co-oximetry. We hypothesised that in-vivo adjustment using the mean of three haemoglobinometer (HemoCue â ) measurements from an arterial blood sample at the first SpHb measurement (HCueART) would increase the accuracy of the monitor. The study included 41 adults for a total of 173 measurements of haemoglobin concentration. In-vivo adjusted SpHb was automatically calculated by the following formula: in-vivo adjusted SpHb = unadjusted SpHb À (SpHb À HCueART). The accuracy of in-vivo adjusted SpHb was compared with SpHb retrospectively adjusted using the same formula, except for haemoglobin level which was assessed at the central laboratory and then compared with all other available invasive methods of haemoglobin measurement (co-oximetry, HbSAT; arterial HemoCue, HCueART; capillary HemoCue, HCueCAP). Compared with laboratory measurement of haemoglobin concentration, bias (precision) for unadjusted SpHb, in-vivo adjusted SpHb, retrospectively adjusted SpHb, HbSAT, HCueART and HCueCAP were À0

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Accuracy of a continuous noninvasive hemoglobin monitor in intensive care unit patients*

Cited by 163 publications

References 17 publications

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

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

Efficacy of Pulse Co-oximeter in Hemoglobin Estimation: A non invasive method

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

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