AIM: To analyze diagnostic performance of cardiovascular magnetic resonance (CMR) in patients, presented with myocardial infarction with nonobstructed coronary arteries (MINOCA). Materials ant methods. 46 consecutives patients presented with myocardial infarction without evidence of obstructive coronary disease on angiography between January, 1 2018 and October 1, 2019 were included in the study. All patients underwent CMR within 10 days after admission. MRI was performed on 1.5 T Magnetic Resonance Imaging (MRI) using comprehensive protocol (T2-images, Cine-CMR, late gadolinium enhancement (LGE)). RESULTS: CMR revealed myocardial infarction (MI) pattern in 14 patients (30.4%), myocarditis in 12 (26.1%), hypertrophic cardiomyopathy in 6 (13.1%). In 14 patients (30.4%) no LGE was observed. Notably in 2 patients without LGE features of takotsubo syndrome were noted. Mean age was significantly lower in patients with MI versus patient with non-ischemic causes of MINOCA (56.112.3 vs 64.612.8; p=0.04). ST elevation at admission frequency didnt differ between MI and non-ischemic patients (35.7% vs 25.0%; p=0.76). However MI patients had significantly increased troponin level, 0.87 [0.22; 1.85] vs 0.22 [0.07; 0.38]; p=0.008. CMR allowed to establish the prcised clinical diagnosis in 73.9% of the cases. CONCLUSION: Clinical data doesnt allow to differentiate ischemic or non-ischemic causes of MINOCA. However, CMR establish the correct diagnosis in most cases.
The tachycardia-induced cardiomyopathy is a rare case of reversible heart failure and left ventricle disfunction. The diagnostic approach and treatment strategy are described in this article. Also the clinical case of heart failure compensation in the patient with left ventricle dilatation and atrial flutter after the reverse to sinus rhythm is after catheter ablation presented.
This review represents different aspects of myocardial infarction in patient with end - stage renal disease on chronic hemodialysis. We discuss difficulties in diagnosis, optimal method of coronary revascularization, timing of hemodialysis session, medical therapy, as well as epidemiology and prognosis. There are no unambiguous answers to these problems because patients with end - stage renal disease were excluded from most of the studies.
