scholarly journals The evaluation of B-type Natriuretic Peptide and Troponin I in acute myocardial infarction and unstable angina

2014 ◽  
Vol 4 (2) ◽  
pp. 77-82
Author(s):  
Nafija Serdarevic ◽  
Azra Durak-Nalbantic
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Unstable Angina ◽  
Natriuretic Peptide ◽  
Troponin I ◽  
Mean Value ◽  
Blood Levels ◽  
Clinical Center ◽  
Healthy Control ◽  
The University

Introduction: The diagnostic utility of B-type natriuretic peptide (BNP) has prompted interest in its use as an aid in the detection of early heart failure and assessment of diseases. The first objective of this study was measurement of BNP and troponin I (TnI) blood levels in patients with acute myocardial infarction (AMI) and unstable angina. The second objective of this study was to find a correlation between TnI and BNP in blood.Methods: The concentrations of BNP and TnI in 150 blood levels were determined using CMIA (chemiluminescent microparticle immunoassay) Architect and 2000 (Abbott diagnostics). The retrospective study included 100 patients who were hospitalized at the Department of Internal Medicine of the University Clinical Center Sarajevo and 50 healthy control. The reference blood range of BNP is 0-100 pg/mL and TnI is 0.00-0.4 ng/mL.Results: In the patients with AMI the mean value of BNP is 764.48 ± 639.52 pg/mL and TnI is 2.50 ± 2.28ng/mL. The patients with unstable angina have BNP 287.18 ± 593.20 pg/mL and TnI 0.10 ± 0.23 ng/mL. Our studies have shown that the correlation between BNP and TnI was statistically significant for p< 0.05 using Student t test with correlation coefficient r = 0.36. Conclusions: BNP and TnI levels can help to identify the patients with a high risk for cardiovascular diseases.

scholarly journals Evaluation of the Efficiency of N-terminal Pro-B-type Natriuretic Peptide for Diagnosis of Acute Myocardial Infarction

2020 ◽  
Author(s):  
Abuagla M. Dafalla ◽  
Leena A. Dafalla ◽  
ShamsEldein M. Ahmed ◽  
Yousif A. Mohammed ◽  
Adam D. Abakar ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Natriuretic Peptide ◽  
Predictive Value ◽  
Troponin I ◽  
Venous Blood ◽  
Cardiac Biomarkers ◽  
Control Group ◽  
Heart Cell ◽  
Cardiac Biomarker

Background: Cardiac diseases are one of the major causes of death worldwide with increasing incidence rate per year, particularly in developing countries such as Sudan owing to urbanization and changing lifestyle. Myocardial infarction is a consequence of the imbalance between the heart blood supply and the required heart cell; this disorder leads to necrosis of myocardium and may cause death. It could be diagnosed by at least two of the following criteria: chest pain, electrocardiography (ECG) elevation, and levels on cardiac biomarkers. This study aimed to evaluate the efficiency of N-terminal pro-B-type natriuretic peptide (NTproBNP) for the diagnosis of acute myocardial infarction (AMI).  Methods: This analytical case–control hospital-based study was conducted on a total of 70 individuals, of which 40 participants were suspected of or diagnosed with AMI, while 30 healthy subjects  were included as a control group. Three ml of venous blood were collected in lithium heparin containers. Troponin I (TnI) as a cardiac biomarker was measured by TOSOH AIA-360, while the NTproBNP level was detected using I-Chroma II. Personal and clinical data were collected directly from each participant using a predesigned questionnaire. Results: A significant increase in the TnI level (mean: 13.13 ± 18.9 ng/ml) and NTproBNP (mean: 5756.5 ± 8378.2 pg/mL) in AMI patients were detected when compared with control mean (0.02 ± 0.00 ng/ml and 57.8 ± 42.32 pg/mL, respectively). Conclusions: NTproBNP gave a high sensitivity (87.5%), specificity (100%), positive predictive value (100%), and negative predictive value (85.7%) in the diagnosis of AMI when compared with another cardiac biomarker such as TnI. Keywords: acute myocardial infarction, NTproBNP, troponin I, Medani Heart Center, Sudan

Abstract 14556: Is There a Relationship Between Lipoprotein (a) and Proprotein Convertase Subtilisin /keksin Type 9 and Cardiovascular Events After Acute Myocardial Infarction?

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Albert GALYAVICH ◽  
Alsu Gimadeeva
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Unstable Angina ◽  
Blood Level ◽  
Cardiovascular Events ◽  
Cardiovascular Death ◽  
Blood Levels ◽  
Proprotein Convertase ◽  
Pcsk9 Inhibitors ◽  
Lipoprotein A

Introduction: Lipoprotein (a) (Lp(a)) has atherogenic effects. Proprotein convertase subtilisin /keksin type 9 (PCSK9) involved in the degradation of LDL-C receptors, increasing LDL-C blood level. Hypothesis: Identify the relationship between Lp(a) and PCSK9 blood levels and major cardiovascular events (unstable angina, myocardial infarction, cardiovascular death) after acute myocardial infarction. Methods: The study included 119 patients with acute myocardial infarction (97 men and 22 women aged 50-70 years). Blood samples were taken on the 2nd day of myocardial infarction. The Lp(a) blood level was determined by immunoturbidimetry (RANDOX), the PCSK9 blood level was determined by ELISA (BioVendor). Primary combined endpoint included hospitalization due to myocardial infarction and unstable angina and cardiovascular death. Patient follow-up was 52 weeks. Statistical analysis methods included Mann-Whitney test and non-parametric correlation by Spearman. Results: In 36 (30.2%) patients with acute myocardial infarction the Lp(a) blood levels were higher than 30 mg/dL. In 83 (69.7%) patients the Lp(a) blood level were below 30 mg/dL. Mean values of Lp(a) blood level was 29.26 ± 2.79 (men 27.71 ± 2.82 mg/dL, women 36.07 ± 8.54 mg/dL, p = 0.797). Mean PCSK9 blood level was 479.7 ± 15.4 ng/ml (males 465.6 ± 16.2ng/ml, females 534.9 ± 38.9 ng/ml, p = 0.122). There was no significant correlation of Lp(a) blood level with total cholesterol, LDL-C, triglycerids and PCSK9 blood levels. No significant correlation was found between Lp(a) and PCSK9 blood levels and cardiovascular events within 12 months. In the group of smoking patients (n = 22) there was found negative correlation between PCSK9 and HDL-C blood levels (-0.45, p = 0.039). Conclusions: Due to the fact that there is no relationship between Lp(a) and PCSK9 blood levels and subsequent cardiovascular events within 52 weeks, the effectiveness of the use of PCSK9 inhibitors after acute myocardial infarction is doubtful.

scholarly journals Who has the leading role in acute myocardial infarction: troponin I or brain natriuretic peptide?

2014 ◽  
Vol 9 (5-6) ◽  
pp. 168-168
Author(s):  
Snezana Brdjanovic ◽  
Mehmed Kulic ◽  
Zorica Hondo ◽  
Azra Durak-Nalbantic ◽  
Sanela Rosic-Ramic
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Brain Natriuretic Peptide ◽  
Natriuretic Peptide ◽  
Troponin I ◽  
Leading Role

High-sensitivity cardiac troponin assays and unstable angina

2016 ◽  
Vol 7 (2) ◽  
pp. 120-128 ◽  
Author(s):  
Yader Sandoval ◽  
Fred S Apple ◽  
Stephen W Smith
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Unstable Angina ◽  
Cardiac Troponin ◽  
Myocardial Injury ◽  
Troponin I ◽  
Myocardial Necrosis ◽  
High Sensitivity ◽  
Clinical Context ◽  
Over Time

The term unstable angina has been conventionally applied to patients with myocardial ischemia without myocardial necrosis. However, while the clinical context has remained constant over time, the biomarkers of myocardial injury and acute myocardial infarction have evolved. High-sensitivity cardiac troponin assays have several key analytical differences from prior cardiac troponin assay generations, which may alter the diagnosis and frequency of unstable angina, as well as affect our understanding of previously developed risk stratification strategies. This document reviews the current challenges in regards to unstable angina when using high-sensitivity cardiac troponin I and T assays.

Lipoprotein (a) blood levels in unstable angina pectoris, acute myocardial infarction, and after thrombolytic therapy

1991 ◽  
Vol 67 (15) ◽  
pp. 1175-1179 ◽  
Author(s):  
Shiqiang Qiu ◽  
Pierre Théroux ◽  
Jacques Genest ◽  
B.Charles Solymoss ◽  
Danielle Robitaille ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Angina Pectoris ◽  
Thrombolytic Therapy ◽  
Unstable Angina ◽  
Unstable Angina Pectoris ◽  
Blood Levels ◽  
Lipoprotein A
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