Abstract
Electrocardiographic rhythm disturbance evaluation by Holter monitoring is increasingly becoming a useful methodologic tool for risk stratification as well as for therapeutic assessment in patients with Chagas' disease. Furthermore, late potential analyses, now being directly obtained from Holter recording has promising perspectives in enhancing identification of patients with high risk profiles for development of malignant ventricular arrhythmias. In addition, recently incorporated to Holter studies, heart rate variability analysis will certainly contribute to a better understanding of the characteristic autonomic nervous system disarray that commonly affects chagasic patients.
Highlights
The possibility of continuously recording the electrocardiogram (ECG) over long periods of time and its subsequent rapid analysis, currently using automatic computerized processes, was introduced to clinical practice by Norman Holter in 1961 [19]
Its utility in Chagas' disease was evaluated by Maguire [26], where 80% of the patients that demonstrated a normal conventional ECG reading were revealed to have ventricular extrasystoles, with an average of 1/hour and 6.7% of pairs or volleys in the Holter method
Sao Paulo Medical Journal/RPM 113(2) Mar/Apr 1995 of conventional ECG with ventricular extrasystoles, their presence was confirmed with the Holter method in all patients, with a density of 290/hour and 88% of the cases with pairs or volleys
Summary
The possibility of continuously recording the electrocardiogram (ECG) over long periods of time and its subsequent rapid analysis, currently using automatic computerized processes, was introduced to clinical practice by Norman Holter in 1961 [19]. Dr Eneas de Carvalho Aguiar, 44 Sao Paulo - SP - Brasil- CEP 05403-000 instrumental practice allowed normally transitory electrocardiographic alterations of specific populations, carriers or not [4,30] of different cardiopathies [6,40], to be recognized and related to the prognosis In this way groups of patients with Chagas' disease were observed [27,38]. Sao Paulo Medical Journal/RPM 113(2) Mar/Apr 1995 of conventional ECG with ventricular extrasystoles, their presence was confirmed with the Holter method in all patients, with a density of 290/hour and 88% of the cases with pairs or volleys. 1) indeterminate 2) digestive 3) cardiac In this revision we will only deal with the chronic and indeterminate forms
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