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2D Echocardiographic Findings, NT-ProBNP Levels, and Outcomes in Dyspnoeic Patients: Results from the Pro-BNP Investigation of Dyspnoea in the Emergency Department- a Single Centre Experience

  •   D. Balaraju
  •   Vijay Kumar
  •   Chethan Kumar
  •   Hulliurudurga Srinivasa Setty Natraj Setty
  •   Lakshman Shastry Sridhar
  •   Jayashree Kharge
  •   Rahul Patil
  •   Cholenahally Nanjappa Manjunath

Cardiology and Angiology: An International Journal, Volume 11, Issue 4, Page 336-346
DOI: 10.9734/ca/2022/v11i4288
Published: 26 September 2022

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Abstract


Background: Dyspnoeic in the emergency department with multiple co-morbidities is a diagnostic challenge. Approximately 15-20% of acute dyspneic in the Emergency Department due to ADHF (acute decompensated heart failure) are misdiagnosed. B-type peptide (BNP) and its amino-terminal fragment (NT-proBNP) accurately identify HF in dyspnoeic patients. In the general population with dyspnoea, plasma pro-BNP concentrations are increased in left ventricular dilatation, hypertrophy, systolic dysfunction, or diastolic dysfunction but are unaffected by pulmonary dysfunction.

Aims and Objectives: To study the relation between NT pro-BNP & echocardiographic findings in acute dyspnoeic patients, and the relation between NT pro-BNP and In-hospital Mortality.

Materials and Methods: Source of data- Patients admitted to the Emergency Room or cardiac intensive care unit with a history of acute dyspnea in a tertiary cardiac care center in south India, meeting inclusion & exclusion criteria, were studied.

Results: The study population is predominantly constituted of the elderly population. The most common co-morbid condition was hypertension. The present study uses an NT pro BNP level of 900pg/ml as the cut-off level. 78 patients were positive for the test. Echocardiography showed that 58% had LV systolic dysfunction, 60% had diastolic dysfunction. 42 patients had EF >55%, 10 patients between 55-45%, 33 patients between 44-30% and 15 patients had EF < 30%. Mortality rate was 6% in the whole study population. However, Mortality was seen in only NT pro-BNP positive group it was not statistically significant (p=0.46).

Conclusions: NT pro-BNP correlates well with the worsening of LV systolic function; as the EF decreases, NT pro-BNP increases. Increase in NT pro-BNP levels has to be interpreted in the clinical context, and it is not a substitute for echocardiography for assessing cardiac abnormalities and dysfunction.

Keywords:
  • Dyspnoeic
  • 2D-echocardiography
  • NT pro-BNP
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How to Cite

Balaraju, D., Kumar, V., Kumar, C., Setty, H. S. S. N., Sridhar, L. S., Kharge, J., Patil, R., & Manjunath, C. N. (2022). 2D Echocardiographic Findings, NT-ProBNP Levels, and Outcomes in Dyspnoeic Patients: Results from the Pro-BNP Investigation of Dyspnoea in the Emergency Department- a Single Centre Experience. Cardiology and Angiology: An International Journal, 11(4), 336–346. https://doi.org/10.9734/ca/2022/v11i4288
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References

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