Estimation of blood haemoglobin concentration using the HemoCue during caesarean section: the effect of sampling site

International Journal of Obstetric Anesthesia
N A RichardsS M Yentis

Abstract

Haemoglobin concentration measured using the HemoCue is accurate for capillary and venous/arterial blood, provided the recommended sampling method is strictly observed. Analysis of blood, particularly of capillary samples, using the HemoCue is useful during caesarean section. The toe might be preferred to the thumb since it is numb during neuraxial anaesthesia, but whether sampling at either site is accurate in this situation, given the cardiovascular effects of anaesthesia and pregnancy, is not known. We aimed to compare haemoglobin values measured in venous and capillary samples (toe and thumb) during caesarean section under neuraxial anaesthesia. Fifty healthy women having caesarean section under spinal or combined spinal-epidural anaesthesia were included. At the end of surgery, the great toe and thumb (non-i.v. fluid side) were lanced as recommended for a HemoCue reading. A venous blood sample (non-i.v. fluid side) was also taken and sent for formal laboratory measurement and tested with the HemoCue. Bland-Altman analysis was applied to the haemoglobin values. Bias (mean difference) and precision +/- 2 SD were respectively 0.2 +/-1.6 for laboratory vs. toe, 0.1 +/-1.8 for laboratory vs. thumb, and 0.2 +/-1.6 laboratory vs....Continue Reading

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Citations

Dec 21, 2012·Annales Françaises D'anesthèsie Et De Rèanimation·J AllaryS Dahmani
Jan 23, 2016·Archives de pédiatrie : organe officiel de la Sociéte française de pédiatrie·L BarcatP Tourneux
Mar 10, 2012·Medicina clínica·Aída Gil DíazPedro Betancor León
Aug 16, 2011·International Journal of Obstetric Anesthesia·Gary Stocks
Sep 11, 2012·Journal of Laboratory Automation·Fabian Sanchis-GomarGiuseppe Lippi
Mar 13, 2019·The Nigerian Postgraduate Medical Journal·Sampson Uzo AnyaElias Chukwujioke Onuora
Dec 5, 2019·Journal of Clinical Monitoring and Computing·Richard L Applegate IiKlaus Torp

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