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In vivo quantification of rolling and adhered leukocytes in human sepsis
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In vivo quantification of rolling and adhered leukocytes in human sepsis
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In vivo quantification of rolling and adhered leukocytes in human sepsis
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Journal Article
In vivo quantification of rolling and adhered leukocytes in human sepsis
2018
Overview
Background
The use of in vivo videomicroscopy at the bedside has demonstrated microcirculatory flow disturbances in sepsis. The ability of in vivo videomicroscopy to detect changes in the prevalence of rolling and adhered leukocytes that occur in sepsis is not well-described in humans. We sought to (1) develop methodology for accessing and quantifying sublingual leukocyte rolling and adherence with sidestream dark field (SDF) imaging; (2) compare the number of rolling and adhered leukocytes between patients with septic shock and non-infected controls; and (3) compare the number of rolling and adhered leukocytes between survivors and non-survivors of septic shock.
Methods
We included adult (age > 18 years) patients in the emergency department presenting with septic shock prospectively enrolled in the ProCESS trial. We recruited comparison non-infected patients as emergency department controls. Using a SDF videomicroscope, we obtained image sequences from the sublingual mucosa, quantifying rolling and adhered leukocytes per 1 mm × 1 mm visual field in a standardized 3-s clip. We report data as median and interquartile range and depicted as box plots. We compared groups using the Mann-Whitney U test, considering a
p
value < 0.05 significant.
Results
We included a total of 64 patients with septic shock and 32 non-infected controls. The median number of adhered leukocytes per field in the sepsis group was 1.0 (IQR 0–3.5) compared to 0 (0–0) in the non-infected group (
p
< 0.001). The median number of rolling leukocytes was 26 (10.3–42) in the sepsis group and 9.8 (4.8–17.3) in the non-infected group (
p
< 0.001) per field. Among the patients with sepsis (
n
= 64), there was an increased number of adhered leukocytes in non-survivors compared to survivors (3.0 (1–5.5) vs. 1.0 (0–3.0)) (
p
< 0.05); however, there was no difference in rolling leukocytes (35 (20–48) vs. 26 (10–41)) (
p
= 0.31).
Conclusions
Our results demonstrated a higher number of rolling and adhered leukocytes in patients with septic shock when compared to non-infected controls, and an increased number of adhered leukocytes in non-survivors.
Trial registration
ClinicalTrials.gov
,
NCT00793442
; Registered on 19 November 2008
PG0GM076659 (US NIH Grant/Contract). First submitted 18 July 2007. First posted 2 August 2007.
Publisher
BioMed Central,BioMed Central Ltd,BMC
