Impact of microcirculatory video quality on the evaluation of sublingual microcirculation in critically ill patients

We aimed to assess the impact of image quality on microcirculatory evaluation with sidestream dark-field (SDF) videomicroscopy in critically ill patients and explore factors associated with low video quality. This was a retrospective analysis of a single-centre prospective observational study. Video...

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Bibliographic Details
Published in:Journal of clinical monitoring and computing 2017-10, Vol.31 (5), p.981-988
Main Authors: Damiani, Elisa, Ince, Can, Scorcella, Claudia, Domizi, Roberta, Carsetti, Andrea, Mininno, Nicoletta, Pierantozzi, Silvia, Adrario, Erica, Romano, Rocco, Pelaia, Paolo, Donati, Abele
Format: Article
Language:English
Subjects:
Adult
Aged
Anesthesiology
Blood vessels
Critical Care
Critical Care Medicine
Critical Illness
Density
Electrical impedance
Glasgow Coma Scale
Health Sciences
Humans
Image quality
Intensive
Intensive Care Units
Mathematical analysis
Medicine
Medicine & Public Health
Microcirculation
Microscopy, Video - methods
Middle Aged
Mouth Floor - blood supply
Original Research
Patients
Prospective Studies
Quality
Respiration, Artificial
Retrospective Studies
Statistics for Life Sciences
Tongue - blood supply
Ventilation
Ventilators
Young Adult
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Summary:We aimed to assess the impact of image quality on microcirculatory evaluation with sidestream dark-field (SDF) videomicroscopy in critically ill patients and explore factors associated with low video quality. This was a retrospective analysis of a single-centre prospective observational study. Videos of the sublingual microcirculation were recorded using SDF videomicroscopy in 100 adult patients within 12 h from admittance to the intensive care unit and every 24 h until discharge/death. Parameters of vessel density and perfusion were calculated offline for small vessels. For all videos, a quality score (−12 = unacceptable, 1 = suboptimal, 2 = optimal) was assigned for brightness, focus, content, stability, pressure and duration. Videos with a total score ≤8 were deemed as unacceptable. A total of 2455 videos (853 triplets) was analysed. Quality was acceptable in 56 % of videos. Lower quality was associated with worse microvascular density and perfusion. Unreliable triplets (≥1 unacceptable or missing video, 65 % of total) showed lower vessel density, worse perfusion and higher flow heterogeneity as compared to reliable triplets ( p  8, p  
ISSN:1387-1307
1573-2614
DOI:10.1007/s10877-016-9924-7