The values of neutrophil to lymphocyte ratio and platelet to lymphocyte ratio in predicting 30 day mortality in patients with acute pulmonary embolism.
vAcute pulmonary embolism (PE) is a life threatening disease. The treatment options depend on the severity of the disease and the mortality varies widely depending on the severity of the condition. It is important to identify patients who are at high risk of mortality. The aim of the present study was to explore the prognostic alues of neutrophil to lymphocyte ratio (NLR) and platelet to lymphocyte ratio (PLR) for 30-day mortality in patients with acute PE.



The study included 321 patients admitted to our university hospital between January 2013 and May 2015 with the diagnosis of acute PE. Multivariable risk models were developed to assess the predictive values of the NLR and PLR for 30-day mortality. Discrimination was evaluated using receiver operating characteristic (ROC) curves.



Two hundred forty-eight patients met our selection criteria. Twenty of them died within 30 days of hospital admission. NLR was found to be an independent predicator after other confounding factors were adjusted in the model. For 1 unit of increase of NLR, the risk of 30-day mortality rose about 13  % (OR = 1.13,95 % CI: 1.04-1.23). The area under ROC for NLR is 0.79 (95 %CI: 0.703-0.880). PLR was associated with 30-day mortality in univariate analysis but the predicative ability diminished with inclusion of other predicators in multivariable model.



NLR is readily available predicator for short-term mortality. It could be a useful indicator for identifying high risk population and guiding clinical management of acute PE.
Department of Respiratory Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, 471003, Luoyang, China.
Yaqing
Y
Ma
Department of Respiratory Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, 471003, Luoyang, China. maoyimin2360@126.com.
Yimin
Y
Mao
Department of Respiratory Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, 471003, Luoyang, China.
Xuegai
X
He
Department of Respiratory Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, 471003, Luoyang, China.
Yuxia
Y
Sun
Department of Respiratory Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, 471003, Luoyang, China.
Shenshen
S
Huang
Department of Respiratory Medicine, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, 471003, Luoyang, China.
Jiayong
J
Qiu
D000208:Acute Disease; D000368:Aged; D000369:Aged, 80 and over; D019540:Area Under Curve; D001792:Blood Platelets; D016009:Chi-Square Distribution; D002681:China; D005260:Female; D006785:Hospitals, University; D006801:Humans; D007958:Leukocyte Count; D016015:Logistic Models; D008214:Lymphocytes; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009504:Neutrophils; D016017:Odds Ratio; D010976:Platelet Count; D011237:Predictive Value of Tests; D011379:Prognosis; D011655:Pulmonary Embolism / Q000097:blood / Q000175:diagnosis* / Q000401:mortality*; D012372:ROC Curve; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors
Lymphocyte; Neutrophil; Pulmonary embolism