-
J. Matern. Fetal. Neonatal. Med. · Dec 2012
Precision and accuracy of noninvasive hemoglobin measurements during pregnancy.
- Eran Hadar, Oded Raban, Tal Bouganim, Kinneret Tenenbaum-Gavish, and Moshe Hod.
- Helen Schneider Hospital for Women, Rabin Medical Center, Petach Tikva and the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. dolgaldor@hotmail.com
- J. Matern. Fetal. Neonatal. Med. 2012 Dec 1;25(12):2503-6.
IntroductionThe NBM-200 is a novel device allowing noninvasive hemoglobin measurement. The system is based on occlusion spectroscopy technology in the red/near-infrared range. At the core of this technology is the production of a new bio-physical signal, resulting from temporarily occluding the blood flow in the measurement site. The measurement is performed using an annular, multi-wavelength probe with pneumatically operated cuffs, with which an over-systolic pressure is produced at the finger base.MethodsOrSense NBM200 was tested during the years 2011-2012 in a population of pregnant women. Upon receipt of informed consent, two noninvasive Hemoglobin measurements were performed on the right and left thumbs of each subject. Reference hemoglobin values were obtained from venous blood samples drawn at the same time of the noninvasive measurement. Blood Hemoglobin was evaluated on an LH-750 Beckman Coulter counter, acting as the reference "gold standard."ResultsA total of 126 data pairs were obtained in the trial from 63 women. The mean error (bias) of the NBM200 readings compared to the reference was 0.1 g/dL and the accuracy, defined as the standard deviation of error, was 0.86 g/dL. A Bland-Altman comparison of the NBM200 versus the Coulter device shows that the 95% limits of agreement is -1.59 to 1.79 g/dL.ConclusionOur study demonstrates a good correlation between reference blood hemoglobin and noninvasive hemoglobin measurements. The NBM-200 can accurately assess hemoglobin levels, in a noninvasive fashion, during pregnancy.
Notes
Knowledge, pearl, summary or comment to share?You can also include formatting, links, images and footnotes in your notes
- Simple formatting can be added to notes, such as
*italics*
,_underline_
or**bold**
. - Superscript can be denoted by
<sup>text</sup>
and subscript<sub>text</sub>
. - Numbered or bulleted lists can be created using either numbered lines
1. 2. 3.
, hyphens-
or asterisks*
. - Links can be included with:
[my link to pubmed](http://pubmed.com)
- Images can be included with:
![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
- For footnotes use
[^1](This is a footnote.)
inline. - Or use an inline reference
[^1]
to refer to a longer footnote elseweher in the document[^1]: This is a long footnote.
.