Respiratory failure & ventilation

Higher levels of circulating desphospho-uncarboxylated matrix Gla protein over time are associated with worse survival: the prospective Maastricht Intensive Care COVID cohort

J Intensive CarePublished Prospective cohort study

Authors' conclusion

ICU mortality in COVID-19 patients was associated with higher dp-ucMGP levels over 4 weeks, independent of age, gender, and APACHE II score, and not explained by inflammation, renal function, history of coumarin use, and CAC score.

Study context

Population
Intensive care unit (ICU) patients with confirmed COVID-19 undergoing endotracheal intubation (ETI) (Maastricht Intensive Care COVID cohort)
Participants
112 patients
Exposure
ICU non-survivors vs ICU survivors
Outcome
Association of dp-ucMGP at ETI with ICU and six months mortality
Methodological detailsserial measurements
  • Serial measurements

Main finding

As reported in the abstract

ICU and six months mortality per 100 pmol/L dp-ucMGP at ETI · at ETI
Per 100 pmol/L dp-ucMGPOdds ratio (95% CI)P value
ICU mortality
1.056(0.977–1.141)
P = 0.172
Six months mortality
1.059(0.976–1.059)
P = 0.170

Per 100 pmol/L dp-ucMGP, as printed

Observational data: associations, not effects.

Further findings

OutcomeDifference (pmol/L) (95% CI)P value
Plasma dp-ucMGP over time of ICU admission (serial, 4 weeks after ETI)Additionally adjusted for CAC score213 (3–422)P = 0.051

pmol/L

Plasma dephosphorylated uncarboxylated matrix Gla protein (dp-ucMGP) over time of ICU admission (serial, 4 weeks after ETI) — Mean difference in plasma dp-ucMGP over time of ICU admission, adjusted for age, gender, APACHE II score
167 (95% CI: 4 to 332, p = 0.047)
Plasma dp-ucMGP over time of ICU admission (serial, 4 weeks after ETI) — Difference after additional adjustment for C-reactive protein, creatinine, history of coumarin use
199 (95% CI: 50 to 346, p = 0.010)

Plasma dp-ucMGP over time of ICU admission (serial, 4 weeks after ETI)

Regression slope (changes over time) did not differ

Pulmonary embolism (PE)

dp-ucMGP not associated with PE

Original publication

Higher levels of circulating desphospho-uncarboxylated matrix Gla protein over time are associated with worse survival: the prospective Maastricht Intensive Care COVID cohort. J Intensive Care. Published 18 December 2023. doi:10.1186/s40560-023-00712-0

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