Pereira, JDGCamacho, A. A.Santana, A. E.Carvalho, M. B.2014-05-202014-05-201998-12-01Arquivo Brasileiro de Medicina Veterinaria e Zootecnia. Minas Gerais: Arquivo Brasileiro Medicina Veterinaria Zootecnia, v. 50, n. 6, p. 677-684, 1998.0102-0935http://hdl.handle.net/11449/1565The serum and urine Na+ and K+ levels and their relationship with electrocardiography characteristics,were studied in 15 male adult mongrel dogs, treated twice-a-day,with 2, 4, 8mg/kg of live weight doses of furosemide and furosemide associated with KCl during 35 days. Urine samples were analyzed weekly in order to determine the Na+ and K+ concentrations and to evaluate the urinary excretion of both cations. Electrocardiography was performed simultaneously, using limb derivations, speed 50mm/sec and calibration of 1 cm corresponding to 1mV. Data showed decreased seric concentrations of Na+ and Ki, increase in Na+ fractional excretion between days 7 and 21 of the treatment, slower heart rate and longer PR, QRS and QT intervals in the ECG. Briefly 2mg/kg furosemide associated with KCl was the most suitable treatment since it induced lesser side effects.677-684pordogelectrocardiographypotassiumsodiumfurosemideArtigoWOS:000080949100004Acesso abertoWOS000080949100004.pdf964268876497890789056599871980683011872715109081