Open AccessNeutrophil/lymphocyte ratio predicts in‐hospital complications in Takotsubo syndrome. Results from a prospective multi‐center registry
Author(s) -
Santoro Francesco,
Guastafierro Francesca,
Zimotti Tecla,
Mallardi Adriana,
Leopizzi Alessandra,
Can Michele,
Di Biase Matteo,
Brunetti Natale Daniele
Publication year - 2020
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.23442
Subject(s) - medicine , cardiology , neutrophil to lymphocyte ratio , prospective cohort study , odds ratio , cardiogenic shock , heart failure , ejection fraction , myocardial infarction , lymphocyte
Background Several hematological indices including subtypes of leukocytes populations have been associated with cardiovascular outcome. Takotsubo syndrome (TTS) is a form of acute heart failure syndrome featured by several in‐hospital complications (IHCs). Hypothesis Hematological indices at admission may predict IHCs in TTS patients. Methods One hundred and sixty consecutive patients with TTS were enrolled in a multicenter prospective registry. Clinical data, admission hemogram, and IHCs were recorded. Results Incidence of IHCs was 37%, including pulmonary edema 9%, cardiogenic shock 9%, need of invasive ventilation 10%, death 8%, stroke 2.5%, and left ventricular thrombi 6%. Patients with IHCs were older, more frequently male, with physical stressor‐induced TTS, lower left ventricular ejection fraction at admission. Neutrophil/lymphocyte ratio (NLr) (12 ± 12 vs 7 ± 8, P = .002) and white blood cells/mean platelet volume ratio (1.2 ± 0.5 vs 1.0 ± 0.5, P = .03) at admission were significantly higher in patients with IHCs. NLr values were predictor of IHCs (Odds ratios [OR] 1.07, 95% CI 1.03‐1.11, P < .01). When stratified according to NLr into tertiles, the rate of IHCs was from first to third tertile was, respectively, 22%, 31%, and 58%. NLr values in the higher tertile were independent predictors of IHCs even at multivariate analysis (OR 3.7, 95% CI 1.5‐9.4, P < .01). NLr values higher than 5 were able to predict IHCs with a sensitivity of 82% and specificity of 58%; negative predictive power was 84% (area under the ROC curve 0.73). Conclusions NLr is an independent predictor of IHCs in patients admitted with TTS. Admission hemogram may represent a potential tool for prediction of IHCs in TTS.