RESUMO
The molecular complex of zinc(II)tetraphenylporphyrin with 1,4-dioxane has been obtained. The IR spectra of the [Zn(TPhP)(1,4-dioxane)2] stabile molecular complex between 4000 and 50cm(-1) have been studied. An interpretation is given on the base the "chair" conformation of 1,4-dioxane molecule.
Assuntos
Dioxanos/química , Metaloporfirinas/química , Estrutura Molecular , Espectrofotometria InfravermelhoRESUMO
A case of a 36-year-old pilot with a left sided accessory pathway (Kent bundle) is presented. The electrophysiological study revealed spontaneous changes in atrioventricular conduction in both the accessory and physiological pathways, lack of retrograde conduction via accessory pathway, and constant ventriculoatrial block in the atrioventricular node during the pacing tests of the right ventricular apex. We point out the influence of the autonomic nervous system on the accessory pathway conduction as well as the clinical and electrophysiological aspects of the phenomenon observed.
