Administration of levothyroxine to euthyroid dogs does not affect echocardiographic and electrocardiographic measurements.

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Title:	Administration of levothyroxine to euthyroid dogs does not affect echocardiographic and electrocardiographic measurements.
Author:	Panciera, D L : Keene, B W : Mier, H C
Citation:	Res-Vet-Sci. 1992 Jul; 53(1): 130-2
Abstract:	The effects of a replacement dose of levothyroxine on electrocardiographic and echocardiographic parameters in euthyroid dogs were examined. Two-dimensional guided M-mode echocardiograms and electrocardiograms were obtained before and after administration of levothyroxine (0.5 mg m-2 twice a day) to 10 euthyroid dogs for a period of eight weeks; four untreated dogs acted as controls. The resting serum total thyroxine concentration was significantly increased in treated dogs during weeks 4 to 8. There were no significant differences in any of the echocardiographic or electrocardiographic measurements resulting from treatment.
Review References:	None
Notes:	Copyright Blackwell Science, Ltd. Hypertext links to electronic journal sites, if available, can be found in the the Peer Reviewed Journal List on the IBIDS home page.
Language:	English
Publication Type:	Journal-Article
Keywords:	Dog Diseases drug therapy : Echocardiography veterinary : Electrocardiography veterinary : Hypothyroidism veterinary : Levothyroxine adverse effects
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