Sublingual microcirculation: comparison between the 415 nm blue light and 520 nm green light of sidestream dark field videomicroscopes
Authors' conclusion
Blue light provides a higher microcirculatory vessel density and image quality than the existing SDF probe using green light.
Study context
- Population
- Healthy volunteers (sublingual microcirculation) and ICU patients' sublingual microcirculation films
- Participants
- 21 healthy volunteers
- Comparison
- 415 nm blue light vs 520 nm green light sidestream dark field (SDF) probes
- Outcome
- Sublingual microcirculatory image quality and related microcirculatory parameters
Methodological detailsprospective healthy-volunteer cohort, retrospective scoring of ICU patient films, paired comparison
- Prospective healthy-volunteer cohort
- Retrospective scoring of ICU patient films
- Paired comparison
Performance
As reported in the abstract
Vessel density in healthy volunteers
Increase in perfused vessel density
4.6 ± 4.7 mm/mm²
P < 0.0001
Blue light
Increase in total vessel density
5.1 ± 4.6 mm/mm²
P < 0.0001
Blue light
Further findings
| Outcome | Blue light | Green light | P value |
|---|---|---|---|
| Unacceptable films (image quality), ICU patients, 200 filmsRetrospectively scored | 10/100 | 39/100 | P < 0.0001 |
Original publication
Sublingual microcirculation: comparison between the 415 nm blue light and 520 nm green light of sidestream dark field videomicroscopes. J Clin Monit Comput. Published 15 July 2022. doi:10.
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