SIMULTANEOUS DETERMINATIONS OF TRACE ELEMENTS IN SERA OF PATIENTS WITH ACUTE MYOCARDIAL INFARCTION BY PIXE

1993 ◽  
Vol 03 (04) ◽  
pp. 295-300 ◽  
Author(s):  
Y. MIURA ◽  
C. ITOH ◽  
T. MIYAKAWA ◽  
K. NAKAI ◽  
K. HIRAMORI ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Copper Content ◽  
Healthy Controls ◽  
Control Subjects ◽  
Nickel Copper ◽  
Significant Difference ◽  
Iron Nickel ◽  
Copper Zinc ◽  
Zinc Nickel

Using PIXE we determined concentrations of iron, nickel, copper, zinc, selenium, and rubidium in sera of 24 patients with acute myocardial infarction and 12 healthy controls. Rubidium*, selenium*, zinc**, nickel** and iron** concentrations are significantly (P<0.001*, P<0.01**) lower for patients than for control subjects. No significant difference is observed in the copper content. However, there is a slight increase in copper content in the patients so that the ratios Cu/Rb, Cu/Se, Cu/Zn, Cu/Ni, Cu/Fe are significantly higher for the patients than for the control subjects (P<0.01).

P876Cardiac magnetic resonance based feature-tracking myocardial strain analysis in MINOCA patients

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
L Szabo ◽  
V Horvath ◽  
Z Dohy ◽  
C Czimbalmos ◽  
A Toth ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Feature Tracking ◽  
Acute Myocarditis ◽  
Myocardial Strain ◽  
Strain Analysis ◽  
Left Ventricular ◽  
Healthy Controls ◽  
Regional Heterogeneity ◽  
Significant Difference

Abstract The diagnostic performance of cardiac magnetic resonance (CMR) based deformation imaging (feature tracking - FT) has been demonstrated in various groups of patients including acute myocardial infarction and acute myocarditis. However, the capability of this method to distinguish between patients with the working diagnosis of MINOCA is yet to be tested. We aimed to compare standard CMR parameters and investigate the differential diagnostic value of CMR-FT myocardial strain in pts with the working diagnosis of MINOCA. From our consecutive register of pts with troponin positive acute coronary syndrome (n=234 pts) we enrolled 100 pts (47.7±14 y; 51 male) in this study.Twenty-five pts were selected randomly from each group of acute myocardial infarction (MI), acute myocarditis, Tako-Tsubo cardiomyopathy (TTC) and pts without structural alteration on CMR, and an additional group of healthy control (n=20, 46±8.2 y; 12 male). Standard CMR parameters such as left ventricular ejection fraction (LVEF), end-diastolic (LVEDVi) and end-systolic (LVESVi) volumes, myocardial mass were assessed and compared between the groups. We performed CMR-FT analysis of the left ventricle, including: global longitudinal (GLS), circumferential (GCS), standard deviation (SD) of the peak circumferential (CS) strain furthermore mechanical dispersion (MD), defined as the SD of the time-to-peak circumferential (MDC) strain of the LV segments expressed as percent of the cardiac cycle. LVEF was lower (44±9.1%) and LVESVi (52.5±12.9ml/m2) was higher in TTC pts compared to all other groups (p<0.001). The LVEF, LVEDVi and LVESVi parameters did not show significant difference between MI and myocarditis pts (LVEF 56.5±7% vs 55±6.6%; LVEDVi 85.4±14.8 vs 92.7±10.7ml/m2; LVESVi 37.7±11.4 vs 41.5±9.1ml/m2). GLS and GRS were significantly reduced in TTC pts (−11.4±4.8%; 43.09±12.5%) compared to all other groups (p<0.001). GCS was impaired in pts with TTC, acute myocarditis and MI compared to healthy controls (−14±3.7 vs −18.7±3.7 vs −19.1±3.8 vs −23.2±3.1%, p<0.001), however there was no significant difference between myocarditis and MI pts. SD of the peak CS was lower in myocarditis compared to other groups (p<0.001). MDC was elevated in TTC and MI compared to myocarditis and healthy controls (16.3±5 vs 13.3±3.4 vs 8.1±3.3 vs 9.46±3.5% p<0.05). There was no significant difference between healthy controls and patients without structural alterations in any strain parameter. Strain analysis of a TTC patient Feature tracking analysis may enable differentiation between patients with MINOCA. TTC reduces global myocardial strain of the left ventricle and causes regional heterogeneity of the left ventricular contraction. Although standard volumetric CMR parameters and CMR based global strain values have limited capability to distinguish between MI and myocarditis with preserved ejection fraction, regional heterogeneity, expressible in MDC is significantly elevated in MI compared to myocarditis and healthy controls. Acknowledgement/Funding Project no. NVKP_16-1-2016-0017 has been implemented with the support provided from the National Research, Development and Innovation Fund of Hungary

Primary care physician services and the frequency of comorbidities in patients with acute myocardial infarction

2021 ◽  
Vol 28 (Supplement_1) ◽  
Author(s):  
R King ◽  
D Giedrimiene
Keyword(s):  
Myocardial Infarction ◽  
Primary Care ◽  
Acute Myocardial Infarction ◽  
Primary Care Physician ◽  
Care Physician ◽  
Adverse Outcomes ◽  
Coronary Syndrome ◽  
Number Of Patients ◽  
Significant Difference ◽  
The Impact

Abstract Funding Acknowledgements Type of funding sources: None. Background The management of patients with multiple comorbidities represents a significant burden on healthcare each year. Despite requiring regular medical care to treat chronic conditions, a large number of these patients may not receive proper care. Significant disparities have been identified in patients with multiple comorbidities and those who experience acute coronary syndrome or acute myocardial infarction (AMI). Only limited data exists to identify the impact of comorbidities and utilization of primary care physician (PCP) services on the development of adverse outcomes, such as AMI. Purpose The primary objective was to analyze how PCP services utilization can be associated with comorbidities in patients who experienced an AMI. Methods This study was based on retrospective data analysis which included 250 patients admitted to the Hartford Hospital Emergency Department (ED) for an AMI. Out of these, 27 patients were excluded due to missing documentation. Collected data included age, gender, medications and recorded comorbidities, such as hypertension, hyperlipidemia, diabetes mellitus (DM), chronic kidney disease (CKD) and previous arrhythmia. Each patient was assessed regarding utilization of PCP services. Statistical analysis was performed in order to identify differences between patients with documented PCP services and those without by using the Chi-square test. Results The records allowed for identification of documented PCP services for 172 out of 223 (77.1%) patients. The most common comorbidities were hypertension and hyperlipidemia: in 165 (74.0%) and 157 (70.4%) cases respectively. The most frequent comorbidity was hypertension: 137 out of 172 (79.7%) in pts with PCP vs 28 out of 51 (54.9%) without PCP, and significantly more often in patients with PCP, p&lt; 0.001. Hyperlipidemia was the second most frequent comorbidity: in 130 out of 172 (75.6%) vs 27 out of 51 (52.9%) accordingly, and also significantly more often (p&lt; 0.002) in patients with PCP services. The number of comorbidities ranged from 0-5, including 32 (14.3%) patients without comorbidities: 16 (9.3%) with a PCP and 16 (31.4%) without PCP services. The majority of patients - 108 (48.5% of 223), had 2-3 documented comorbidities: 89 (51.8%) had two and 19 (34.6%) had three. The remaining 40 (17.9%) patients had 4-5 comorbidities: 37 (21.5%) of them with a PCP and 3 (10.3%) without, with a significant difference (p &lt; 0.001) found for patients with a higher number of comorbidities who utilized PCP services. Conclusions Our study shows that the majority of patients who presented with an AMI had one or more comorbidities. Furthermore, patients who did not utilize PCP services had fewer identified comorbidities. This suggests that there may be a significant number of patients who experienced AMI with undiagnosed comorbidities due to not having access to PCP services.

scholarly journals Use of Circulating MicroRNAs to Diagnose Acute Myocardial Infarction

2012 ◽  
Vol 58 (3) ◽  
pp. 559-567 ◽  
Author(s):  
Yvan Devaux ◽  
Mélanie Vausort ◽  
Emeline Goretti ◽  
Petr V Nazarov ◽  
Francisco Azuaje ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Chest Pain ◽  
Troponin T ◽  
Correct Diagnosis ◽  
Patient Treatment ◽  
Healthy Controls ◽  
Clinical Model ◽  
Acute Mi ◽  
St Elevation

Abstract BACKGROUND Rapid and correct diagnosis of acute myocardial infarction (MI) has an important impact on patient treatment and prognosis. We compared the diagnostic performance of high-sensitivity cardiac troponin T (hs-cTnT) and cardiac enriched microRNAs (miRNAs) in patients with MI. METHODS Circulating concentrations of cardiac-enriched miR-208b and miR-499 were measured by quantitative PCR in a case-control study of 510 MI patients referred for primary mechanical reperfusion and 87 healthy controls. RESULTS miRNA-208b and miR-499 were highly increased in MI patients (&gt;105-fold, P &lt; 0.001) and nearly undetectable in healthy controls. Patients with ST-elevation MI (n= 397) had higher miRNA concentrations than patients with non–ST-elevation MI (n = 113) (P &lt; 0.001). Both miRNAs correlated with peak concentrations of creatine kinase and cTnT (P &lt; 10−9). miRNAs and hs-cTnT were already detectable in the plasma 1 h after onset of chest pain. In patients who presented &lt;3 h after onset of pain, miR-499 was positive in 93% of patients and hs-cTnT in 88% of patients (P= 0.78). Overall, miR-499 and hs-cTnT provided comparable diagnostic value with areas under the ROC curves of 0.97. The reclassification index of miR-499 to a clinical model including several risk factors and hs-cTnT was not significant (P = 0.15). CONCLUSION Circulating miRNAs are powerful markers of acute MI. Their usefulness in the establishment of a rapid and accurate diagnosis of acute MI remains to be determined in unselected populations of patients with acute chest pain.

scholarly journals The effect of unguided de-escalation of P2Y12 receptor inhibitor therapy after acute myocardial infarction in patients undergoing percutaneous coronary intervention: a nationwide cohort study

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
J.S Yeh ◽  
C.Y Hsu ◽  
C.Y Huang ◽  
W.T Chen ◽  
Y.C Hsieh ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Percutaneous Coronary Intervention ◽  
Coronary Intervention ◽  
Bleeding Complications ◽  
Funding Source ◽  
P2y12 Inhibitor ◽  
Risk Of Death ◽  
Percutaneous Coronary ◽  
Significant Difference

Abstract Aims To examine the effect of de-escalation of P2Y12 inhibitor in dual antiplatelet therapy (DAPT) on major adverse cardiovascular events (MACE) and bleeding complications after acute myocardial infarction (AMI) in Taiwanese patients undergoing percutaneous coronary intervention (PCI). Methods and results We retrospectively evaluated patients who had received PCI during AMI hospitalisation and were initially on aspirin and ticagrelor and without adverse events at 3 months between 2013 and 2016. In total, 1,901 and 8,199 patients were identified as switched DAPT (switched to aspirin and clopidogrel) and unswitched DAPT (continued on aspirin and ticagrelor) cohorts, respectively. With a mean follow-up of 8 months, the incidence rates (per 100 person-year) of death, AMI readmission and MACE were 2.89, 3.68 and 4.91 in the switched cohort and 2.42, 3.28 and 4.72 in the unswitched cohort, respectively based on an inverse probability of treatment weighted method. (Table) After adjustment for patients' clinical variables, two groups were no significant difference in death (A), AMI admission (B) and MACE (C). Additionally, there was no difference in the risk of major (D) or non-major clinically relevant bleeding (E) (Figure 1). Conclusions Unguided de-escalation of P2Y12 inhibitor in DAPT was not associated with higher risk of death, MACE, AMI readmission in Taiwanese patients with AMI undergoing PCI. Figure 1 Funding Acknowledgement Type of funding source: Private hospital(s). Main funding source(s): Taipei Medical University

scholarly journals Correlation of Triiodothyronine Level with In-Hospital Cardiac Function and Long-Term Prognosis in Patients with Acute Myocardial Infarction

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Jianqing She ◽  
Jiahao Feng ◽  
Yangyang Deng ◽  
Lizhe Sun ◽  
Yue Wu ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Survival Analysis ◽  
Cardiac Function ◽  
Thyroid Function ◽  
Major Adverse Cardiovascular Events ◽  
Free Triiodothyronine ◽  
Kaplan Meier ◽  
Significant Difference

Objective. The pathophysiologic mechanism of how thyroid function is related to the development and prognosis of acute myocardial infarction (AMI) remains under explored, and there has been a lack of clinical investigations. In this study, we investigate the relationship between triiodothyronine (T3) level and cardiac ejection fraction (EF) as well as probrain natriuretic peptide (NT-proBNP) on admission and subsequent prognosis in AMI patients. Methods. We measured admission thyroid function, NT-proBNP, and EF by echocardiography in 345 patients diagnosed with AMI. Simple and multiregression analyses were performed to investigate the correlation between T3 level and EF as well as NT-proBNP. Major adverse cardiovascular events (MACE), including new-onset myocardial infarction, acute heart failure, and cardiac death, were documented during the follow-up. 248 participants were separated into three groups based on T3 and free triiodothyronine (FT3) levels for survival analysis during a 2-year follow-up. Results. 345 patients diagnosed with AMI were included in the initial observational analysis. 248 AMI patients were included in the follow-up survival analysis. The T3 levels were found to be significantly positively correlated with EF (R square=0.042, P<0.001) and negatively correlated with admission NT-proBNP levels (R square=0.059, P<0.001), which is the same with the correlation between FT3 and EF (R square=0.053, P<0.001) and admission NT-proBNP levels (R square=0.108, P<0.001). Kaplan-Meier survival analysis revealed no significant difference with regard to different T3 or FT3 levels at the end of follow-up. Conclusions. T3 and FT3 levels are moderately positively correlated with cardiac function on admission in AMI patients but did not predict a long-time survival rate. Further studies are needed to explain whether longer-term follow-up would further identify the prognosis effect of T3 on MACE and all-cause mortality.

scholarly journals ACUTE MYOCARDIAL INFARCTION;

2013 ◽  
Vol 20 (03) ◽  
pp. 332-340
Author(s):  
ATIF SITWAT HAYAT ◽  
MUHAMMAD ADNAN BAWANY ◽  
JAWAD AHMED QADRI ◽  
Kiran Khalil
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Heart Block ◽  
Complete Heart Block ◽  
Tertiary Care ◽  
Anterior Wall ◽  
P Value ◽  
Inferior Wall ◽  
Care Hospital ◽  
Significant Difference

Background: Ischemic heart disease is the most common cause for complete heart block (CHB) and sudden death. Heartblocks may occur as complications of acute myocardial infarction (AMI) and are associated with increased mortality. The aim of thisstudy is to determine the frequency of complete heart block (CHB) in acute myocardial infarction at a tertiary care hospital. Place andduration: This study was conducted in Cardiology Department of Liaquat University of Medical and Health Sciences from 1st August2009 to 31st January 2010. Study Design: Cross sectional and descriptive study. Materials and Methods: ST segment elevation equal toor more than 1mm (0.1mv) in two of these leads II, III and aVF. Rise in serum creatinine kinase level (CPK Level) more than twice thenormal value along with CK-MB fraction more than 6% of CPK value. Patients with history of chest pain, shortness of breath, nausea,vomiting and unconsciousness were enrolled in the study. The cardiac enzymes tropinin T was also performed at bed side by venousblood sample. Results: Total of 87 patients were included, prevalence of heart blocks was 27.58%. Anterior wall MI was in 50(57.5%)patients. Of these, 13(54.2%) had complete heart block. Inferior wall MI was in 37(42.5%) cases, of these, 11(45.8%) were found withcomplete heart block. There was no significant difference between anterior wall MI and inferior wall MI with complete heart block (P value> 0.05). Mortality was 2.3% with anterior wall MI. Conclusions: Development of complete heart blocks has important prognosticsignificance. Complete heart block was frequent complication of myocardial infarction.

Abstract 429: First-Line Vasopressor Agent for Cardiogenic Shock Due to Acute Myocardial Infarction: Results From Tokyo CCU Network Registry

Circulation ◽  
2019 ◽  
Vol 140 (Suppl_2) ◽  
Author(s):  
Tadashi Ashida ◽  
Tsukasa Yagi ◽  
Ken Nagao ◽  
Norihiro Kuroki ◽  
Tadateru Takayama ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Renal Function ◽  
Mortality Rate ◽  
Cardiogenic Shock ◽  
First Line ◽  
Poor Renal Function ◽  
Vasopressor Agent ◽  
Significant Difference ◽  
All Cause Mortality

Background: In the guidelines for cardiogenic shock, norepinephrine, as compared with dopamine, was associated with fewer cases of arrhythmia and may be a better first-line vasopressor agent. However, few clinical studies have investigated the effects of optimal first-line vasopressor agents for patients with poor renal function. Methods: From a multicenter, prospective, cohort registry of emergency cardiovascular patients in Tokyo between 2013 and 2016, we identified adult patients with cardiogenic shock due to acute myocardial infarction (AMI) who received either norepinephrine, dopamine or both as a vasopressor agent without mechanical circulatory supports. Study patients were divided into 4 groups according to estimated glomerular filtration rate (eGFR). The primary endpoint was all-cause mortality at 30 days after admission. Results: Of the 4,034 patients with cardiogenic shock due to AMI, 665 were eligible for this study; 419 received norepinephrine (N group), 154 dopamine (D group), and 92 both agents (B group). There was a significant difference in the all-cause mortality rate between the three groups in the whole cohort (16.0% in the N group, 9.7% in the D group and 40.2% in the B group, P<0.001). In addition, there was a significant difference in the all-cause mortality rate between the three groups in the subgroups of patients with eGFR stage 3a and 3b. (Figure). After adjustment of independent factors for mortality, the odds ratio of the D group (reference, the N group) was 0.51 (95%CI 0.26-0.99, p=0.049). Conclusion: Compared with norepinephrine, dopamine was associated with a lower all-cause mortality rate for patients with cardiogenic shock due to AMI, especially patients with poor renal function.

Abstract 558: Association of Chronic Kidney Disease and Diabetes Mellitus with 5-Year Outcomes after Acute Myocardial Infarction

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Kazuoki Dai ◽  
Masaharu Ishihara ◽  
Ichiro Inoue ◽  
Takuji Kawagoe ◽  
Yuji Shimatani ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Chronic Kidney Disease ◽  
Survival Rate ◽  
Kidney Disease ◽  
Independent Predictor ◽  
Diabetic Patients ◽  
Kaplan Meier ◽  
Significant Difference

Several studies have shown that both chronic kidney disease (CKD) and diabetes mellitus are risk factors for mortality in patients with acute myocardial infarction (AMI). This study was undertaken to investigate influence of CKD on the prognostic significance of diabetes in patients with AMI. Between January 1996 and December 2005, 888 patients with AMI underwent coronary angiography within 24 hours after the onset of chest pain. CKD was difined estimated glomerular filtration rate (eGFR) of less than 60.0 ml/minute/1.73 m 2 of body-surface area (stage3–5). Kaplan-Meier method was used to compare 5-year survival of diabetic and non-diabetic patients, in the presence (n=337) or absence (n=551). Kaplan-Meier curves for 5-year survival rate are shown in Figure . In the absence of CKD, there was no significant difference in 5-year survival rate between patients with diabetes and those without (93 % v.s. 94 %, p=0.82). In patients with CKD, however, diabetes was associated with lower 5-year survival rate (65 % v.s. 87 %, p<0.001). Multivariate analysis showed that diabetes was an independent predictor for 5-year survival in patients with CKD (OR 3.2, 95%CI 1.8–5.8, p=0.0002), but not in patients without CKD (OR 1.1, 95%CI 0.4–2.5, p=0.82). Diabetes mellitus was an independent predictor for death after AMI in patients with CKD. Aggressive treatment after AMI should be advocated in diabetic patients with CKD.

Genetic Variants on SCN5A, KCNQ1, and KCNH2 in Patients with Ventricular Arrhythmias during Acute Myocardial Infarction in a Chinese Population

Cardiology ◽  
2019 ◽  
Vol 145 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Feng Wang ◽  
Yang Liu ◽  
Hongtao Liao ◽  
Yumei Xue ◽  
Xianzhang Zhan ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Association Study ◽  
Chinese Population ◽  
Ventricular Arrhythmias ◽  
Rare Variants ◽  
Allelic Frequency ◽  
Genotype Frequency ◽  
Missense Variants ◽  
Significant Difference

Objective: Acute myocardial infarction (AMI) remains a leading cause of morbidity and mortality worldwide. About half of sudden deaths from AMI are mainly because of malignant ventricular arrhythmias (VA) after AMI. The sodium channel gene SCN5A and potassium channel genes KCNQ1 and KCNH2 have been widely reported to be genetic risk factors for arrhythmia including Brugada syndrome and long QT syndrome (LQTS). A few studies reported the association of SCN5A variant with ventricular tachycardia (VT)/ventricular fibrillation (VF) complicating AMI. However, little is known about the role of KCNQ1 and KCNH2 in AMI with VA (AMI_VA). This study focuses on investigating the potential variants on SCN5A, KCNQ1, and KCNH2 contributing to AMI with VA in a Chinese population. Materials and Methods: In total, 139 patients with AMI_VA, and 337 patients with AMI only, were included. Thirty exonic sites were selected to be screened. Sanger sequencing was used to detect variants. A subsequent association study was also performed between AMI_VA and AMI. Results: Twelve variants [5 on KCNH2(NM_000238.3), 3 on KCNQ1(NM_000218.2), and 4 on SCN5A(NM_198056.2)] were identified in AMI_VA patients. Only 5 (KCNH2: c.2690A>C; KCNQ1: c.1927G>A, c.1343delC; SCN5A: c.1673A>G, c.3578G>A) of them are missense variants. Two (KCNQ1: c.1343delC and SCN5A: c.3578G>A) of the missense variants were predicted to be clinically pathogenic. All these variants were further genotyped in an AMI without VA group. The association study identified a statistically significant difference in genotype frequency of KCNH2: c.1539C>T and KCNH2: c.1467C>T between the AMI and AMI_VA groups. Moreover, 2 rare variants (KCNQ1: c.1944C>T and SCN5A: c.3621C>T) showed an elevated allelic frequency (more than 1.5-fold) in the AMI_VA group when compared to the AMI group. Conclusion: Twelve variants (predicting from benign/VUS to pathogenic) were identified on KCNH2, KCNQ1, and SCN5A in patients with AMI_VA. Genotype frequency comparison between AMI_VA and AMI identified 2 significant common variants on KCNH2. Meanwhile, the allelic frequency of 2 rare variants on KCNQ1 and SCN5A, respectively, were identified to be enriched in AMI_VA, although there was no statistical significance. The present study suggests that the ion-channel genes KCNH2, KCNQ1, and SCN5A may contribute to the pathogenesis of VA during AMI.

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