Accuracy of noninvasive haemoglobin measurement by pulse oximetry depends on the type of infusion fluid

Bergek, Christian; Zdolsek, Joachim; Hahn, Robert G.

doi:10.1097/eja.0b013e3283592733

Cited by 14 publications

(12 citation statements)

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“…A volunteer study showed that hydroxyethyl starch causes SpHb to overestimate Hb, while acetated Ringer's solution produced the opposite result. 14 In fasting healthy volunteers, both fluids cause vasodilation. The difference in SpHb bias could then be attributable to extravasation of crystalloid fluid that could strengthen the background (non-pulsatile) signal of the Radical-7 measurements.…”

Section: Discussionmentioning

confidence: 99%

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Non-invasive blood haemoglobin and plethysmographic variability index during brachial plexus block

Bergek

Zdolsek

Hahn

2015

British Journal of Anaesthesia

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Section: Discussionmentioning

confidence: 99%

“…11 -13 Its accuracy is affected by the simultaneous infusion of fluid; slightly higher SpHb values are obtained when the PI is high. 14 The PVI is typically twice as high in the conscious patient as it is in the anaesthetized state, 10 which suggests that the nervous system might be involved in the generation of the parameter output.…”

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confidence: 99%

Non-invasive blood haemoglobin and plethysmographic variability index during brachial plexus block

Bergek

Zdolsek

Hahn

2015

British Journal of Anaesthesia

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“…A comparison between Hb measured invasively and by pulse oximetry has been published elsewhere [11]. …”

Section: Methodsmentioning

confidence: 99%

Interactions between the volume effects of hydroxyethyl starch 130/0.4 and Ringer´s acetate

et al. 2013

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IntroductionThe turnover of Ringer´s solutions is greatly dependent on the physiological situation, such as the presence of dehydration or anaesthesia. The present study evaluates whether the kinetics is affected by previous infusion of colloid fluid.MethodsTen male volunteers with a mean age of 22 years underwent three infusion experiments, on separate days and in random order. The experiments included 10 mL/kg of 6% hydroxyethyl starch 130/0.4 (Voluven™), 20 mL/kg of Ringer's acetate, and a combination of both, where Ringer´s was administered 75 minutes after the starch infusion ended. The kinetics of the volume expansion was analysed by non-linear least- squares regression, based on urinary excretion and serial measurement of blood haemoglobin concentration for up to 420 minutes.ResultsThe mean volume of distribution of the starch was 3.12 L which agreed well with the plasma volume (3.14 L) estimated by anthropometry. The volume expansion following the infusion of starch showed monoexponential elimination kinetics with a half-life of two hours. Two interaction effects were found when Ringer´s acetate was infused after the starch. First, there was a higher tendency for Ringer´s acetate to distribute to a peripheral compartment at the expense of the plasma volume expansion. The translocated amount of Ringer´s was 70% higher when HES had been infused earlier. Second, the elimination half-life of Ringer´s acetate was five times longer when administered after the starch (88 versus 497 minutes, P <0.02).ConclusionsStarch promoted peripheral accumulation of the later infused Ringer´s acetate solution and markedly prolonged the elimination half-life.Trial registrationClinicalTrials.gov: NCT01195025

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“…Massimo calculates the PI value by rating the pulstatile and non-pulstatile pulses. In various studies evaluating PI as an indicator of peripheral perfusion, it has been reported that basal measurements of the PI may show high variability [14,35].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the success of supraclavicular blockade performed under general anesthesia in arthroscopic surgery of the shoulder by using Perfusion Index

Ceylan

Eşki̇n

2020

Ortadogu Tıp Derg

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Accuracy of noninvasive haemoglobin measurement by pulse oximetry depends on the type of infusion fluid

Abstract: The bias of measuring haemoglobin concentration by pulse oximetry is dependent on whether a crystalloid or a colloid fluid is infused. Trial registration ClinicalTrials identifier: NCT01195025.

Cited by 14 publications

References 20 publications

Non-invasive blood haemoglobin and plethysmographic variability index during brachial plexus block

Non-invasive blood haemoglobin and plethysmographic variability index during brachial plexus block

Interactions between the volume effects of hydroxyethyl starch 130/0.4 and Ringer´s acetate

Evaluation of the success of supraclavicular blockade performed under general anesthesia in arthroscopic surgery of the shoulder by using Perfusion Index

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