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Revista Médica Electrónica

versión On-line ISSN 1684-1824


GARCIA ALVAREZ, Pedro Julio; MOREJON RAMOS, Leodan  y  GRASSO LEYVA, Fernando. PO2/FiO2 index correlation with inflammatory and coagulation parameters in critically-ill patients with COVID-19 in Lombardy, 2020. Rev.Med.Electrón. [online]. 2021, vol.43, n.4, pp.900-909.  Epub 31-Ago-2021. ISSN 1684-1824.


the knowledge of disease physiopathology has revolutionized the traditional approach in the treatment of diseases caused by respiratory viruses. Currently, the markers of inflammatory answer are used to diagnose, stratify and predict in many cases the future behavior of COVID-19 patients.


to characterize the nature of the relationship between PO2/FiO2 (PAFI, Spanish acronym of PA= presión arterial [arterial pressure], FI=fracción inspirada [inspired fraction]) and coagulation and inflammatory parameters in seriously-ill patients with COVID-19, in the region of Lombardy, Italy.

Materials and methods:

a retrospective, longitudinal, analytic study was carried out in 191 severe and critical patients who were admitted in Hospadale Maggiori di Crema, in the region of Lombardy, Italy, with the diagnosis of COVID-19, in the period April 1st-May 20, 2020.


the evidenced correlations were the following: reactive C protein (-0.417) p=0; procalcitonin (PCT) (-0.152) p=0.018. D dimer (-0.112) p=0.061; Fibrinogen (-0.272) p=0.000; Plasma creatinine (-0.320) p=0.000; lymphocytes count (0,028) p=0,000; troponin (-0.028) p=0.142; and lactate (-0.191) p=0.288.


inflammatory markers play a capital role in the disease pathogenesis, and approaching this item of the medical anti-inflammatory treatment is mandatory. It is useful to keep a correct coagulation screening, using low molecular weight heparins, and also keeping an adequate hemodynamic support able to avoid cell dysoxia progressing to multiorgan failure.

Palabras clave : PO2/FiO2 index; COVID-19; inflammatory markers..

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