RESUMO
The occurrence of multiple processes in elderly patients brings a high risk for diagnostic or therapeutic induced iodine-hyperthyroidism. Often an atypical form of hyperthyroidism without classical symptoms is induced. The cause of iodine-induced hyperthyroidism exists mostly in autonomous tissue beyond a "critical volume" in localized or disseminated form. If the deficiency of iodine in endemic goitre areas is substituted by iodine-application, hypermetabolism of autonomous tissue causes hyperthyroidism. The pathomechanism of autonomy and iodine-induced hyperthyroidism is not completely known. General iodine salt prophylaxis will bring less amounts of autonomous goitres. Some differential diagnostic possibilities for avoiding iodine-contamination in the elderly patients and therapeutic consequences after unavoidable iodine-application are described.
Assuntos
Hipertireoidismo/induzido quimicamente , Iodo/efeitos adversos , Idoso , Diagnóstico Diferencial , Feminino , Bócio/tratamento farmacológico , Humanos , Hipertireoidismo/radioterapia , Iodo/deficiência , Iodo/uso terapêutico , Radioisótopos do Iodo/uso terapêutico , Masculino , PrognósticoAssuntos
Bócio Endêmico/complicações , Hipertireoidismo/induzido quimicamente , Iodo/efeitos adversos , Adenoma/complicações , Idoso , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Feminino , Bócio Nodular/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Hormônios Tireóideos/sangue , Neoplasias da Glândula Tireoide/complicaçõesRESUMO
41 patients with inferior myocardial infarction underwent both exercise stress testing and coronary arteriography. Coronary arteriography of 15 patients showed high-degree stenosis as well as occlusions of the right coronary artery and/or of the R. circumflexus of the left coronary artery alone. In 14 of these 15 cases exercise stress testing showed a normal result, in one case results were abnormal. However, we detected additional high-degree stenosis of R. interventricularis anterior and/or of R. diagonalis and/or of R. marginalis in the other 26 patients. In 22 of these 26 cases exercise stress testing showed an abnormal result, in 4 cases it was normal. Because of a sensitivy of 84,6% and a specificity of 93,3% we can assume, that abnormal results of exercise stress testing suggest additional high-degree stenosis of the RIVA-vessel system in patient after inferior myocardial infarction. Considering an eventual bypass operation it is possible to narrow the indication for coronary arteriography.