Pediatric anesthesia & critical care
Is noninvasive hemoglobin measurement suitable for children undergoing preoperative anesthesia consultation?
Authors' conclusion
The accuracy of hemoglobin measurement is insufficient for the diagnosis of anemia.
Study context
- Population
- Children aged ≤ 17 years during preoperative anesthesia consultationmedian age 6 years
- Participants
- 62 children
- Comparison
- Noninvasive hemoglobin vs laboratory hemoglobin
- Outcome
- Agreement between SpHb and labHb
Methodological detailsprospective
- Prospective
Performance
As reported in the abstract
- Bias (SpHb vs laboratory hemoglobin (labHb))
- 0.3 g/dl
- Limits of agreement
- −2.26- +2.8 g/dl
- Root mean square error
- 1.3 g/dl
- Regression of labHb, R2
- 0.359
- Effect of labHb on bias (SpHb underestimates labHb for high labHb values)
- - 0.443 (CI 95: - 0.591- - 0.153, P < 0.001)
- Retest reliability between two consecutive SpHb measurements
- 0.727 (P < 0.001)
Further findings
- Anemia detection with SpHb
- 96.3% (CI 95: 87.3%-99.5%) · specificity · sensitivity 57.1% (CI 95: 18.4%-90.1%)
- Anemia detection with adapted SpHb cut-offs (age-dependent cut-off plus 0.8 g/dl)
- 100% (CI 95: 64.6%-100%) · sensitivity
Safety
Adverse effects of SpHb measurement
- No adverse effects; measurement unsuccessful in one child
Original publication
Is noninvasive hemoglobin measurement suitable for children undergoing preoperative anesthesia consultation? J Clin Monit Comput. Published 20 July 2024. doi:10.
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