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Paper Information

Journal:   JOURNAL OF CARDIOVASCULAR AND THORACIC RESEARCH   SPRING 2010 , Volume 2 , Number 1; Page(s) 23 To 27.
 
Paper: 

MEASUREMENT OF NT- PROBNP IN PATIENTS WITH HEART FAILURE

 
 
Author(s):  ASADPOUR PIRANFAR M.*, PORDAL A.H., BEYRANVAND M.R.
 
* DEPT OF CARDIOVASCULAR, TALEGHANI HOSPITAL, SHAHID BEHESHTI MEDICAL UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

Background: Heart failure is the final complication of many diseases and an important cause of morbidity and mortality. N- Terminal B- type Natriuretic Peptide (NT-Pro BNP) is a new diagnostic tool for evaluation of the severity of heart failure and for differentiation between systolic function of left and right heart. In addition, plasma level of NT-Pro BNP serves as a good guide in the management and follow-up of patients under treatment for heart failure.
Methods: Patients with left side heart failure who referred to Taleghani hospital were consecutively recruited for this study. Diagnosis of heart failure was done through clinical evaluation and echocardiographic procedure. The severity of heart failure was determined according to New York heart association (NYHA) classification and clinical stage for each patient. Three ml citrated venous blood was obtained from the subjects and all samples were sent to the Endocrine and Metabolism research center laboratory of Shahid Beheshti Medical Medical University for evaluation of plasma NT-ProBNP level by enzyme-linked immunoabsorbent assay (ELISA) technique. Patients with acute coronary syndrome, severe valvular stenosis, severe lung disease, liver cirrhosis, primary hyperaldesteronism, hyperthyroidism, acute respiratory distress syndrome (ARDS), and candidates for heart transplantation were excluded. Plasma level of NT- ProBNP for each classification of NYHA and clinical stages and left ventricular ejection fraction (LVEF) were evaluated.
Results: Seventy nine patients, with a mean age of 63.1
±14 years were included in the study. Fifty-five (69.6%) subjects were male. Forty-eight patients (60.8%) were hypertensive, twenty- two patients (27.8%) were diabetic and sixty- four patients (81.0%) suffered from ischemic heart disease (IHD). The mean plasma level of NT- ProBNP in subjects aged 60 years or more was higher than younger subjects, (485.8± 418.6 versus 308.7±300.5), (P= 0.033). The evaluation of NTPro BNP plasma levels showed correlation with decreased ejection fraction (P=0.013), clinical stages (P<0.001), and function class according to NYHA classification (P<0.001).
Conclusion: Plasma levels of NT- Pro BNP were elevated proportional to decrease in ejection fraction and systolic function of left ventricle in patients with heart failure. Measurement of NT- Pro BNP is a good laboratory indicator for detection of left ventricular failure and its severity.

 
Keyword(s): NT-PRO BNP, HEART FAILURE, EJECTION FRACTION, NYHA
 
References: 
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