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Prognostic Value of N-Terminal Pro-Brain Natriuretic Peptide in Acute Pulmonary Embolism

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DOI: 10.4236/ojemd.2012.24009    3,972 Downloads   6,537 Views  

ABSTRACT

Patients with pulmonary embolism (PE) have a high risk of death and it is important to recognize factors associated with high mortality. N-Terminal pro-Brain Natriuretic Peptide (NT-pro BNP) has recently emerged as a promising biomarker for risk assessment in acute pulmonary embolism (PE). The aim of this study is to detect the in hospital prognostic value of NT-pro BNP in patients with acute (PE). Methods: This study included 64 patients diagnosed as (PE) with the mean age of 59.1 ± 16.5 years, 40 patients of them (62.5%) were male. All patients were subjected to 12 leads ECG. X-ray chest, laboratory tests including D-Dimer, troponin I, NT-pro BNP, Doppler ultrasound for the venous system of both lower limbs, Echocardiograhy and 64 multislices CT pulmonary angiography. Results: According to the admission level of NT-pro BNP our patients were divided into two groups: group I included 22 patients with normal NT-pro BNP (less than 300 pg/ml), and group II included 42 patients with elevated NT-pro BNP (more than or equal 300 pg/ml). Patients in group II were found to have a significantly higher incidence of heart failure (28.6% Vs 4.6%, p = 0.025), impaired kidney function (serum creatinine was 1.7 ± 0.6 Vs 1.1 ± 0.2, p = 0.018), tachypnea (85.7% Vs 54.5%, p = 0.006) and cardiogenic shock (26.2% Vs 0%, p = 0.014) but a significantly lower incidence of chest pain (21.4% Vs 45.5%, p = 0.04) and lower left ventricular ejection fraction (51.3% ± 16.9% Vs 67.3% ± 12.8%, p = 0.043) compared to group I. There were a significantly higher treatment with thrombolytic therapy (35.7% Vs 9.1%, p=0.021) and positive inotropics (35.71% Vs 4.55%, p = 0.006) in group II compared to group I. Also group II had a higher need for mechanical ventilation (26.12% Vs 4.55%, p = 0.04) and a longer in hospital stay (19.5 ± 10.3 Vs 5.3 ± 4.5, p = 0.001) than group I. The in hospital mortality was significantly higher in group II compared to group I (19.05% Vs 0.0%, p = 0.042). Conclusion: Elevated NT-pro BNP levels in patients with (PE) are associated with worse short term prognosis in terms of higher morbidity and mortality and it could be used as a valuable prognostic parameter and good indicator for the need of more aggressive therapy.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

A. Selem, H. Radwan and A. M Gomaa, "Prognostic Value of N-Terminal Pro-Brain Natriuretic Peptide in Acute Pulmonary Embolism," Open Journal of Endocrine and Metabolic Diseases, Vol. 2 No. 4, 2012, pp. 58-62. doi: 10.4236/ojemd.2012.24009.

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