ABSTRACT
The article describes a clinical case of myopericarditis as a late manifestation of possible COVID-19.
Subject(s)
Coronavirus Infections , Myocarditis , Pandemics , Pericarditis , Pneumonia, Viral , Betacoronavirus , COVID-19 , Humans , Myocarditis/diagnosis , Myocarditis/etiology , Pericarditis/diagnosis , Pericarditis/epidemiology , Pericarditis/etiology , SARS-CoV-2ABSTRACT
Changes of parameters of heart rate variability (HRV) in patients with supraventricular tachycardia (SVT) immediately after radiofrequency ablation (RFA) have been demonstrated earlier. However dynamics of HRV parameters after RFA has not been sufficiently studied. For elucidation of dynamics of HRV parameters in patients with SVT after RFA we conducted analysis of HRV basing on data of 24 hour Holter ECG monitoring before RFA, on day 2, in 1 week and 1 month after intervention in 27 patients with paroxysmal SVT. Statistically significant lowering of temporal (SDNNi, RMSSD, NN50, pNN50) and spectral (VLF, LF, HF) HRV parameters were found on day 2 and in 1 week after RFA compared with data obtained before intervention. In 1 month after RFA the studied parameters of HRV did not differ from baseline values. Reversible changes of HRV parameters evidencing for transitory autonomic dysfunction are observed after RFA.
Subject(s)
Catheter Ablation , Heart Rate , Tachycardia, Supraventricular/diagnosis , Tachycardia, Supraventricular/therapy , Adolescent , Adult , Aged , Electrocardiography, Ambulatory , Female , Humans , Male , Middle Aged , Tachycardia, Supraventricular/physiopathology , Treatment OutcomeABSTRACT
Heart rate variability (HRV) was assessed on 24 hour Holter ECG recordings from 32 healthy persons and 54 patients with paroxysmal atrial fibrillation (AF) of different etiology (hypertension, ischemic heart disease, rheumatic mitral valve disease, idiopathic AF) aged 45-73 years. Nocturnal, diurnal and 24 hour HRV was measured. Time and frequency domain HRV measures were lower in patients with AF and underlying heart disease compared with healthy persons and for most of the parameters with patients with idiopathic AF (p<0,05). Patients with idiopathic AF compared with healthy persons had higher values of high frequency power during nighttime (p<0.05), what reflected activation of parasympathetic nervous system in this category of patients.
Subject(s)
Atrial Fibrillation/physiopathology , Circadian Rhythm , Heart Rate , Aged , Atrial Fibrillation/etiology , Electrocardiography, Ambulatory , Female , Humans , Male , Middle Aged , Parasympathetic Nervous System/physiopathologyABSTRACT
AIM: To assess effect of radio frequency catheter ablation (RFCA) on heart rate variability (HRV) in patients with supraventricular tachyarrhythmias (SVT). METHODS: Spectral analysis of HRV on 5-minute ECG strips was carried out in 19 patients with SVT before and 2 days after RFCA. RESULTS: Both total and high frequency power significantly decreased (p<0,05) after RFCA in supine and orthostatic positions. Significant decrease of low frequency power occurred after RFCA in orthostatic position. CONCLUSION: In patients with SVT RFCA alters autonomic regulation of chronotropic function of the heart. Sympathetic and parasympathetic influences on the chronotropic function of the heart are attenuated in early period after the procedure.
