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ORIGINAL ARTICLE
Year : 2022  |  Volume : 6  |  Issue : 3  |  Page : 183-186

Neutrophil-to-Lymphocyte Ratio and Outpatient Management of Low-Risk Acute Pulmonary Embolism


1 Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
2 Cardiovascular Research Center, Tabriz University of Medical Science, Tabriz, Iran
3 Department of Cardiology, Urmia University of Medical Sciences, Urmia, Iran
4 Anesthesiology, Urmia University of Medical Sciences, Urmia, Iran, Iran

Correspondence Address:
Dr. Reza Hajizadeh
Department of Cardiology, Urmia University of Medical Sciences, Taleghani Hospital, Urmia
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/hm.hm_20_21

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Purpose: Low-risk pulmonary thromboembolism (PTE) outpatient management has been described recently. The blood neutrophil/lymphocyte ratio (NLR) has been shown to be a useful marker of cardiovascular disease and an independent predictor of cardiac mortality. The predictive value of NLR in predicting mortality of low-risk PTE was evaluated in this study. Materials and Methods: The total of 168 patients with definite pulmonary embolism diagnosed by computed tomography angiography whose on-admission simplified Pulmonary Embolism Severity Index (PESI) score was zero enrolled in this study. The survival rate of patients according to their NLR was evaluated. Results: During 12 months' follow-up period, eight patients (4.7%) died. None of the patients with an NLR of <3.2 died during the follow-up. The median values of NLR in the nonsurvivor and survivor groups were 9.2 ± 3.03 (2–29.5) and 4.69 ± 0.43 (0.8–24.5), respectively. NLR values were significantly higher in nonsurvivors compared to survivors (P = 0.043). Conclusion: This study suggests that patients with zero PESI score and NLR <3.2 could be managed patiently with good results.


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