Elevated Troponin I in patients with no or non-obstructive coronary arterial disease; Characterization by Cardiac MRI

BackgroundInvasive angiography in the setting of cardiac troponin elevation may reveal non-obstructive coronary arteries leading to uncertainty in diagnosis. Cardiac MR (CMR) may aid in diagnosis, however, the spectrum of diagnostic findings in the patient presenting with symptoms of cardiac ischaemia, elevated cardiac biomarkers and a negative invasive coronary angiogram is yet to be completely described.MethodsWe queried the Mayo Clinic, Rochester inpatient record from 1 January 2000 to 31 December 2016 to identify patients who: (1) had an elevated troponin T during admission, (2) underwent coronary angiography within 30 days of troponin T elevation which was considered negative for obstructive coronary arterial disease and (3) underwent CMR within 30 days of troponin T elevation. CMR diagnoses were classified as either (1) myocarditis, (2) small area myocardial infarction, (3) stress cardiomyopathy, (4) non-ischaemic cardiomyopathy or (5) normal.ResultsOf 215 patients, the spectrum of disease seen on CMR was myocarditis (32%), small area infarction (22%), non-ischaemic cardiomyopathy (20%) and stress cardiomyopathy (9.3%).ConclusionIn the largest single-centre study assessing the role of CMR in patients admitted with elevated troponin T with a non-obstructive coronary disease on an angiogram, small area infarction was seen in 22% of patients.

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Coronary arterial disease after electroconvulsive therapy: a case report

Jornal Brasileiro de Psiquiatria ◽

10.1590/0047-2085000000074 ◽

2015 ◽

Vol 64 (2) ◽

pp. 173-176

Author(s):

Nataly Pimentel Rodrigues ◽

Amilton dos Santos Júnior ◽

Renato Alves de Andrade ◽

Leandro Xavier de Camargo Schlittler ◽

Andrei Carvalho Sposito

Keyword(s):

Case Report ◽

Troponin I ◽

Unipolar Depression ◽

The Elderly ◽

Arterial Disease ◽

Current Case ◽

Percutaneous Coronary Angioplasty ◽

Coronary Arterial Disease ◽

St Segment ◽

Global Burden Of Diseases

Objectives Unipolar depression (UPD) is a leading cause of global burden of diseases, particularly among the elderly, whose treatment may be challenging. In such cases, ECT is often recommended due to its safety and efficacy. This report presents a case of a 67-year-old male inpatient that developed a rare cardiac complication during ECT. Methods Clinical case report with patient’s consent and bibliographic review. Results A 67-year-old male inpatient with recurrent severe psychotic depression was hospitalized and ECT was indicated after failure of the pharmacological treatment. A comprehensive clinical pre-evaluation revealed only nonspecific ST-segment changes in electrocardiogram. During the 7th ECT session, it was observed transitory ST-segment depression followed by a discrete increase of plasma troponin I. Severe tri-vessel coronary artery stenosis was found and a percutaneous coronary angioplasty was performed, with satisfactory psychiatric and cardiac outcomes. Conclusions Unipolar depression (UPD) and cardiovascular disease are often coexistent conditions, especially among the elderly. In the current case, myocardial ischemia was detected lately during ECT therapy and its treatment allowed the UPD treatment to be completed adequately.

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Cardiac MRI and CT: the eyes to visualize coronary arterial disease and their effect on the prognosis explained by the Schrödinger's cat paradox

Radiologia Brasileira ◽

10.1590/0100-3984.2016.49.1e2 ◽

2016 ◽

Vol 49 (1) ◽

pp. VII-VIII ◽

Cited By ~ 5

Author(s):

Carlos E. Rochitte

Keyword(s):

Cardiac Mri ◽

Arterial Disease ◽

Coronary Arterial Disease

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Cardiac troponin I in patients with acute upper and lower limb ischemia

VASA ◽

10.1024/0301-1526.37.4.327 ◽

2008 ◽

Vol 37 (4) ◽

pp. 327-332 ◽

Cited By ~ 1

Author(s):

Koutouzis ◽

Sfyroeras ◽

Moulakakis ◽

Kontaras ◽

Nikolaou ◽

...

Keyword(s):

Upper Limb ◽

Lower Limb ◽

Cardiac Troponin ◽

Cardiac Involvement ◽

Troponin I ◽

Limb Ischemia ◽

Elevated Troponin ◽

Troponin Elevation ◽

Lower Limb Ischemia ◽

Ischemia Group

Background: The aim of this study was to investigate the presence, etiology and clinical significance of elevated troponin I in patients with acute upper or lower limb ischemia. The high sensitivity and specificity of cardiac troponin for the diagnosis of myocardial cell damage suggested a significant role for troponin in the patients investigated for this condition. The initial enthusiasm for the diagnostic potential of troponin was limited by the discovery that elevated cardiac troponin levels are also observed in conditions other than acute myocardial infarction, even conditions without obvious cardiac involvement. Patients and Methods: 71 consecutive patients participated in this study. 31 (44%) of them were men and mean age was 75.4 ± 10.3 years (range 44–92 years). 60 (85%) patients had acute lower limb ischemia and the remaining (11; 15%) had acute upper limb ischemia. Serial creatine kinase (CK), isoenzyme MB (CK-MB) and troponin I measurements were performed in all patients. Results: 33 (46%) patients had elevated peak troponin I (> 0.2 ng/ml) levels, all from the lower limb ischemia group (33/60 vs. 0/11 from the acute upper limb ischemia group; p = 0.04). Patients with lower limb ischemia had higher peak troponin I values than patients with upper limb ischemia (0.97 ± 2.3 [range 0.01–12.1] ng/ml vs. 0.04 ± 0.04 [0.01–0.14] ng/ml respectively; p = 0.003), higher peak CK values (2504 ± 7409 [range 42–45 940] U/ml vs. 340 ± 775 [range 34–2403] U/ml, p = 0.002, respectively, in the two groups) and peak CK-MB values (59.4 ± 84.5 [range 12–480] U/ml vs. 21.2 ± 9.1 [range 12–39] U/ml, respectively, in the two groups; p = 0.04). Peak cardiac troponin I levels were correlated with peak CK and CK-MB values. Conclusions: Patients with lower limb ischemia often have elevated troponin I without a primary cardiac source; this was not observed in patients presenting with acute upper limb ischemia. It is very important for these critically ill patients to focus on the main problem of acute limb ischemia and to attempt to treat the patient rather than the troponin elevation per se. Cardiac troponin elevation should not prevent physicians from providing immediate treatment for limb ischaemia to these patients, espescially when signs, symptoms and electrocardiographic findings preclude acute cardiac involvement.

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Coronary arterial disease associated with arteriosclerosis in lower extremity: angiographic analysis

Journal of the Korean Radiological Society ◽

10.3348/jkrs.1993.29.6.1163 ◽

1993 ◽

Vol 29 (6) ◽

pp. 1163

Author(s):

Ji Hye Kim ◽

Jin Wook Chung ◽

Seon Kyu Lee ◽

Joon Koo Han ◽

Jae Hyung Park ◽

...

Keyword(s):

Lower Extremity ◽

Arterial Disease ◽

Coronary Arterial Disease

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Urinary fatty acid binding protein 3 (uFABP3) is a potential biomarker for peripheral arterial disease

Scientific Reports ◽

10.1038/s41598-021-90395-0 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Abdelrahman Zamzam ◽

Muzammil H. Syed ◽

John Harlock ◽

John Eikelboom ◽

Krishna K. Singh ◽

...

Keyword(s):

Fatty Acid ◽

Fatty Acid Binding Protein ◽

Binding Protein ◽

Arterial Disease ◽

Prior History ◽

P Value ◽

Fatty Acid Binding ◽

Coronary Arterial Disease ◽

Acid Binding Protein ◽

Potential Biomarker

AbstractPlasma levels of fatty acid binding protein 3 (pFABP3) are elevated in patients with peripheral artery disease (PAD). Since the kidney filters FABP3 from circulation, we investigated whether urinary fatty acid binding protein 3 (uFABP3) is associated with PAD, and also explored its potential as a diagnostic biomarker for this disease state. A total of 130 patients were recruited from outpatient clinics at St. Michael’s Hospital, comprising of 65 patients with PAD and 65 patients without PAD (non-PAD). Levels of uFABP3 normalized for urine creatinine (uFABP3/uCr) were 1.7-folds higher in patients with PAD [median (IQR) 4.41 (2.79–8.08)] compared with non-PAD controls [median (IQR) 2.49 (1.78–3.12), p-value = 0.001]. Subgroup analysis demonstrated no significant effect of cardiovascular risk factors (age, sex, hypertension, hypercholesteremia, diabetes and smoking) on uFABP3/uCr in both PAD and non-PAD patients. Spearmen correlation studies demonstrated a significant negative correlation between uFABP3/uCr and ABI (ρ = − 0.436; p-value = 0.001). Regression analysis demonstrated that uFABP3/Cr levels were associated with PAD independently of age, sex, hypercholesterolemia, smoking, prior history of coronary arterial disease and Estimated Glomerular Filtration rate (eGFR) [odds ratio: 2.34 (95% confidence interval: 1.47–3.75) p-value < 0.001]. Lastly, receiver operator curve (ROC) analysis demonstrated unadjusted area under the curve (AUC) for uFABP3/Cr of 0.79, which improved to 0.86 after adjusting for eGFR, age, hypercholesteremia, smoking and diabetes. In conclusion, our results demonstrate a strong association between uFABP3/Cr and PAD and suggest the potential of uFABP3/Cr in identifying patients with PAD.

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