Temporal analysis of cardiac frequency variability in basal condition in elderly chagasic subjects in indeterminate form in endemic área

Revista da Sociedade Brasileira de Medicina Tropical

Ferreira, Bruno Doriguetto Couto¹  Resende, Luiz Antonio Pertili R. de¹  Faculdade de Medicina do Triângulo Mineiro, Uberaba¹  Silva, Valdo José Dias da¹  Correia, Dalmo¹  Carneiro, Aldo César de Freitas¹  Silva, Raphael Antônio Gomes da¹  Prata, Aluízio¹ 

关键词: Chagas'disease;    Cardiac autonomic function;    Heart rate variability;    Temporal RR interval analysis;   

DOI  :  10.1590/S0037-86822003000600010

学科分类：农业科学（综合）

来源: Sociedade Brasileira de Medicina Tropical

【 摘 要 】

With the aim of evaluating the cardiac autonomic function in elderly chagasic patients living in an endemic area, we evaluated, by using computadorized heart rate variability, 28 elderly chagasic with the indeterminate form, 28 elderly non chagasic and 28 young healthy control. In all patients we performed conventional eletrcardiogram, radiological investigation of thorax, and with contrast of esophagus and colons and echodopplercardiogram. Non chagasic patients did not perform only the exams with contrast. The sistolic ventricular funtion was preserved in all subjects. There was no statistically significant difference between the groups with regard to mean duration of RR intervals. Considering the variance, standard deviation, variation coeficient and pNN50 there was statistically significant difference between the young and elderly groups but no difference was found when the analysis was performed in each one separately for these temporal indexes. We conclude that, in basal condition, the groups of elderly chagasic and no chagasic subjects did not differ as much as the cardiac autonomic modulation in time domain.

【 授权许可】

Unknown