scholarly journals Correlation of troponin-I level with left ventricular systolic dysfunction after first attack of non-ST segment elevation myocardial infarction

Author(s):  
Mahmood H. Khan ◽  
Mirza Md. Nazrul Islam ◽  
Md. Shafiqul Islam ◽  
Kaisar Nasrullah Khan ◽  
Shamim Chowdhury ◽  
...  

Background: Coronary Heart Disease (CHD) is the most common category of the heart disease and is found to be the single most important cause that leads to premature death in the developed world. Recognizing a patient with ACS is important because the diagnosis triggers both triage and management. cTnI is 100% tissue-specific for the myocardium and it has shown itself as a very sensitive and specific marker for AMI. Ventricular function is the best predictor of death after an ACS. It serves as a marker of myocardial damage and provides information on systolic function as well as diagnosis and prognosis. The study aimed at investigating the impact of LVEF on elevated troponin-I level in patients with first attack of NSTEMI.Methods: This cross-sectional analytical study was conducted in the department of cardiology in Mymensingh Medical College Hospital from December, 2015 to November, 2016. Total 130 first attack of NSTEMI patients were included considering inclusion and exclusion criteria. The sample population was divided into two groups: Group-I: Patients with first attack of NSTEMI with LVEF: ≥55%. Group-II: Patients with first attack of NSTEMI with LVEF: <55%. Then LVEF and troponin-I levels were correlated using Pearson’s correlation coefficient test.Results: In this study mean troponin-I of group-I and group-II were 5.53±7.43 and 16.46±15.79ng/ml respectively. It was statistically significant (p<0.05). The mean LVEF value of groups were 65.31±10.30% and 40.17±4.62% respectively. It was statistically significant (p<0.05). The echocardiography showed that patients with high troponin-I level had low LVEF and patients with low troponin-I level had preserved LVEF. Analysis showed that patients with highest level of troponin-I had severe left ventricular systolic dysfunction (LVEF <35%) and vice versa-the patients with the lowest levels of troponin-I had preserved systolic function (LVEF ≥55%). In our study, it also showed that the levels of troponin-I had negative correlation with LVEF levels with medium strength of association (r= -0.5394, p=0.001). Our study also discovered that Troponin-I level ≥6.6ng/ml is a very sensitive and specific marker for LV systolic dysfunction.Conclusions: The study has enabled the research team to conclude that the higher is the Troponin-I level the lower is the LVEF level and thus more severe is the LV systolic dysfunction in first attack of NSTEMI patients.

Heart ◽  
2001 ◽  
Vol 86 (2) ◽  
pp. 172-178 ◽  
Author(s):  
O W Nielsen ◽  
J Hilden ◽  
C T Larsen ◽  
J F Hansen

OBJECTIVETo examine a general practice population to measure the prevalence of signs and symptoms of heart failure (SSHF) and left ventricular systolic dysfunction (LVSD).DESIGNCross sectional screening study in three general practices followed by echocardiography.SETTING AND PATIENTSAll patients ⩾ 50 years in two general practices and ⩾ 40 years in one general practice were screened by case record reviews and questionnaires (n = 2158), to identify subjects with some evidence of heart disease. Among these, subjects were sought who had SSHF (n = 115). Of 357 subjects with evidence of heart disease, 252 were eligible for examination, and 126 underwent further cardiological assessment, including 43 with SSHF.MAIN OUTCOME MEASURESPrevalence of SSHF as defined by a modified Boston index, LVSD defined as an indirectly measured left ventricular ejection fraction ⩽ 0.45, and numbers of subjects needing an echocardiogram to detect one case with LVSD.RESULTSSSHF afflicted 0.5% of quadragenarians and rose to 11.7% of octogenarians. Two thirds were handled in primary care only. At ⩾ 50 years of age 6.4% had SSHF, 2.9% had LVSD, and 1.9% (95% confidence interval 1.3% to 2.5%) had both. To detect one case with LVSD in primary care, 14 patients with evidence of heart disease without SSHF and 5.5 patients with SSHF had to be examined.CONCLUSIONSSHF is extremely prevalent in the community, especially in primary care, but more than two thirds do not have LVSD. The number of subjects with some evidence of heart disease needing an echocardiogram to detect one case of LVSD is 14.


Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Jacob C Jentzer ◽  
Hussein Abu-Daya ◽  
Asher Shafton ◽  
Meshe Chonde ◽  
Didier Chalhoub ◽  
...  

Introduction: Left ventricular systolic dysfunction (LVSD) is common after resuscitation from cardiac arrest (CA). The association of echocardiographic LVSD with cardiac rhythm during CA is not well described. Hypothesis: Patients with a shockable rhythm (VT/VF) will have a greater degree of LVSD by echocardiography after CA. Methods: Prospective registry of patients resuscitated from CA underwent transthoracic echocardiography (TTE) within 24 hours after CA. We determined 2D measurements, LVEF, spectral Doppler of mitral inflow and LV outflow, systolic and diastolic tissue Doppler of the mitral annulus velocity, and tricuspid plane annular excursion (TAPSE). We collected data on in-hospital mortality as well as vasopressor doses and troponin I levels. TTE parameters and clinical characteristics were compared between patients with a shockable (VT/VF) arrest rhythm and a non-shockable (asystole/PEA) arrest rhythm and between survivors and non-survivors using t-tests and ANOVA. Results: Of the 55 patients, the 23 (42%) with shockable CA rhythms had significantly higher LV end-systolic dimension (4.1cm vs. 3.3cm, p = 0.0073), lower LV fractional shortening (0.15 vs. 0.28, p <0.0001), and lower LVEF both by visual estimate (36.2% vs. 52.3%, p = 0.0012) and by Simpson’s biplane method (37.5% vs. 52.3%, p = 0.0506). Other measured TTE parameters did not differ between groups, including TAPSE (shockable 1.53 vs. non-shockable 1.82, p = 0.1731). Admission and peak 24 hour vasopressor requirements did not differ between groups. Peak troponin levels were higher (22.26 vs. 3.88, p = 0.0198) in patients with shockable CA rhythms, but admission troponin levels were no different (0.88 vs. 0.51, p = 0.1527). TTE parameters did not differ between survivors and non-survivors (visual LVEF 47.0% vs. 44.2%, p = 0.5968; LV fractional shortening 0.19 vs. 0.25, p = 0.0916). Conclusions: Patients with shockable CA rhythms have more severe LVSD on 24 hour echocardiography despite similar vasopressor requirements and admission troponin levels. Echocardiographic parameters at 24 hours did not predict in-hospital mortality. Early echocardiography after CA appears more useful for differentiating primary CA rhythm than for predicting mortality.


KYAMC Journal ◽  
2013 ◽  
Vol 2 (1) ◽  
pp. 118-122
Author(s):  
Md Nure Alom Siddiqui ◽  
Shahnaj Sultana ◽  
Abul Hossain ◽  
Muhammad Afsar Siddiqui

Introduction: Echocardiography is the definitive diagnostic tool for left ventricular systolic dysfunction. But it is expensive and requires trained manpower and thus might not be available in the primary care set up. EGG and Chest X ray, the more basic investigations, may help diagnose LVSD or at least streamline those who absolutely require echocardiography in primary care setup. Methods: ECG, Chest X ray and Echocardiography along with clinical assessment were performed on 70 patients with some form of complaints related to heart. The inferences on systolic function obtained from ECG, Chest X ray were compared with Echocardiography findings. Results: Out of 70 participants, 50 had left ventricular ejection fraction less than 45%, 56 had abnormal EGG, 60 had cardiomegaly in chest X-ray. A set of pre-selected ECG abnormalities had a sensitivity of 100% (83.4-100), specificity of 70% (35.4-91.9) and a positive predictive value of 89.3% (70.6-97.2) in diagnosing LVSD. Likewise, the figures were 92% (72.5-98.6), 30% (8.l-64.6) and 76.7% (57.3-89.4) respectively for a cardiothoracic ratio of more than 0.5 in chest X-ray. Conclusions: Although, ECG and Chest X-ray could not replace Echocardiography, they could very well give an idea of the systolic function of an individual and suggest the need or no need for an echo-study in primary care setup.DOI: http://dx.doi.org/10.3329/kyamcj.v2i1.13515 KYAMC Journal Vol.2(1) 2011 pp.118-122


2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Line Lisbeth Olesen ◽  
Thomas Vauvert F. Hviid

Left ventricular systolic dysfunction (LVSD) defined by ejection fraction (EF) <40% is common, serious but treatable, and correct diagnosis is the cornerstone of effective treatment. Biomarkers may help to diagnose LVSD and give insight into the pathophysiology. The immune system is activated in LVSD, and the immunomodulatory molecule human leukocyte antigen-G (HLA-G) may be involved. The primary aim was to measure soluble HLA-G (sHLA-G) in the blood in different stages of LVSD (<30% and 30–40%), in the midrange EF 40–50%, and in preserved EF ≥ 50% and to validate sHLA-G as a LVSD biomarker. The secondary aim was to examine associations between HLA-G gene polymorphisms influencing expression levels and LVSD. The 260 study participants were ≥75 years old, many with risk factors for heart disease or with known heart disease. Soluble HLA-G was significantly and uniformly higher in the groups with EF < 50% (<30, 30–40, and 40–50%) compared to EF > 50% (p<0.0001). N-terminal fragment-pro-B-type natriuretic peptide (NT-proBNP) and uric acid values were inversely related to EF. According to Receiver Operating Characteristic (ROC) curves NT-proBNP outperformed both sHLA-G and uric acid as biomarkers of LVSD. Soluble HLA-G in blood plasma was elevated in LVSD regardless of EF. A novel finding was that a combined 14 bp ins-del/+3142 SNP HLA-G haplotype was associated with EF < 40%.


2014 ◽  
Vol 5 (1) ◽  
pp. 56-62
Author(s):  
A. V Barsukov ◽  
D. V Glukhovskoy

The paper considers modern conceptions about the role of citoprotective therapy in persons with ischemic heart disease. Special attention is given to the justification of Trimetazidine modified release (TMZ MV) application in patients with severe multi-vessel coronary lesions in conjunction with left ventricular systolic dysfunction. There described the clinical case with emphasis on possibility of inclusion in conservative treatment scheme of TMZ MB to poly morbid elderly patient with severe ischemic heart disease.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Gaosheng Zhou ◽  
Lijun Ye ◽  
Liang Zhang ◽  
Liangqing Zhang ◽  
Yuanli Zhang ◽  
...  

Objective. To investigate the correlation between TREM-1 and LPS-induced left ventricular systolic dysfunction in BALB/c mice.Methods. Male BALB/c mice were randomly divided into 3 groups: LPS, LPS/TREM-1, and control groups which were injected intraperitoneally with 25 mg/kg LPS, 5 μg TREM-1mAb 1 h after LPS challenge, and sterilized normal saline, respectively. Left ventricular systolic function was monitored by echocardiography at 6 h, 12 h, and 24 h. Meanwhile, TNF-α, IL-1β, and sTREM-1 in serum and myocardium were determined by ELISA or real-time PCR; at last left ventricles were taken for light microscopy examination.Results. FS and EF in LPS/mAbTREM-1 group, significantly declined compared with LPS and control group at 12 h, were accompanied with a markedly increase in serum IL-1β(at 6 h) and sTREM-1 (at 12 h and 24 h) expression. Myocardium TNF-α(at 6 h and 24 h) and sTREM-1 (at 6 h) were significantly higher in LPS/mAbTrem-1-treated mice than in time-matched LPS-treated mice; meanwhile myocardium TNF-αmRNA were markedly increased in comparison with LPS-treated or saline-treated mice at 24 h. Besides, mAbTREM-1 aggravated LPS-induced myocardial damage was observed.Conclusions. Our results suggest that TREM-1 is significantly associated with LPS-induced left ventricular systolic dysfunction in BALB/c mice.


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