• Ferit Boyuk.
• Department of Cardiology, Yedikule Chest Diseases and Thoracic Surgery Training and Research Hospital, Istanbul, Turkey.
• Int. J. Clin. Pract. 2021 Dec 1; 75 (12): e14966.

ObjectiveSystemic inflammatory response and pro-coagulator factors are critical in acute pulmonary embolism. Recently, there is increasing evidence that the multi-inflammatory index (MII) may be prognostic in many clinical situations. The study investigated whether MII-1 and MII-2 can distinguish massive (MPE) and non-massive pulmonary embolism (NMPE).MethodsA total of 146 patients (73 MPE and 73 NMPE) were included in the study that was designed as a retrospective cross-sectional analysis. Following haemogram analysis, MII-1 (platelet-to-lymphocyte x CRP) and MII-2 (neutrophil-to-lymphocyte x CRP) were calculated manually.ResultsMII-1 and 2 showed a positive significant correlation with PLR and NLR, moderate positive correlation with CPR, and weak positive correlation with PAP (P < .001). CRP, MII-1, MII-2, PAP and systolic BP variables showed strong diagnostic value in distinguishing MPE and NMPE [AUC (SE): 0.816 (0.037), 0.811 (0.038), 0.810 (0.037), 0.870 (0.032) and 0.864 (0.032); respectively] (P < .001). MPR, MPV, RDW, and PLR in distinguishing MPE and NMPE groups did not show significance (P > .05).ConclusionAlthough MII-1 and MII-2 are simple, cheap, and easy indexes to calculate, they showed a strong ability to distinguish MPE and NMPE compared with the previously studied classical inflammatory indexes.© 2021 John Wiley & Sons Ltd.

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