Baseline haemoglobin variability by measurement technique in pregnant people on the day of childbirth
Authors' conclusion
HemoCue capillary measurement under-estimated haemoglobin and Masimo haemoglobin measurement over-estimated, limiting their clinical use.
Study context
- Population
- Pregnant people on the day of planned vaginal birth
- Participants
- 180 people
- Exposure
- Venous and capillary HemoCue and Masimo Rad-67 Pulse CO-Oximeter Hb vs laboratory Hb
- Outcome
- Agreement with laboratory haemoglobin (bias and limits of agreement)
- Follow-up
- Day of childbirth
Methodological detailsmethod comparison (Bland-Altman analysis)
- Method comparison (Bland-Altman analysis)
Main finding
As reported in the abstract
Bias vs laboratory Hb
Each group vs laboratoryMean difference (bias), g.l-1 (95% CI)
HemoCue venousSD 7.54; limits of agreement −14.10-15.46 g.l-1; agreement range 29.6 g.l-1; acceptable
0.7(−0.43-1.79)
HemoCue capillarySD 14.12; limits of agreement - 14.42-40.93 g.l-1; agreement range 55.3 g.l-1; unacceptable
13.3(11.17–15.34)
MasimoSD 11.15; limits of agreement −35.85 to 7.87 g.l-1; agreement range 43.7 g.l-1; bias unacceptable
−14.0(−15.63 to −12.34)
Observational data: associations, not effects.
Further findings
Anaemia (Hb < 110 g.l-1)
- People with anaemia
- 5 (2.8%)
Original publication
Baseline haemoglobin variability by measurement technique in pregnant people on the day of childbirth. Anaesthesia. Published 21 November 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →