Sousa A C, Marin-Neto J A, Maciel B C, Gallo Júnior L, Barreto-Martins L E, Amorim D S
Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brasil.
Braz J Med Biol Res. 1987;20(6):781-3.
Standardized handgrip at 100% of maximal voluntary capacity was used to study heart rate responses to isometric exercise in patients with the digestive form of Chagas' disease. The chronotropic responses of the group were significantly lower (P less than 0.001) than those exhibited by control subjects, and comparable to those observed in a group of cardiac chagasic patients. These results show that severe impairment of autonomic control of the heart may occur in chagasic patients apparently having only digestive tract involvement.
采用最大自主收缩能力100%的标准化握力试验，研究恰加斯病消化型患者等长运动时的心率反应。该组的变时反应显著低于对照组（P<0.001），与一组恰加斯心脏病患者的反应相当。这些结果表明，在明显仅有消化道受累的恰加斯病患者中，可能会出现心脏自主神经控制的严重受损。
