title: [The question of age dependence of the so-called tension index and its behavior after administration of nitroglycerin].
abstract: On 90 persons with healthy heart and circulation aged from 18 to 52 years the age dependence of the so-called tension index after Rentsch was investigated and at the same time the change of the index after application of nitroglycerin was tested. The statistical evaluation with the help of the regression analysis resulted in a significant age dependence of the tension index, which is to be takent into consideration in further examinations. The behaviour of the index after application of nitroglycerin referred to the fact that the so-called nitroglycerin test is suitable for the proof of a latent heart insufficiency on account of  a relatively frequent antidromic reaction in younger and medium age above all for patients older than forty years.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D005996:Nitroglycerin / Q000494:pharmacology*; D005082:Physical Exertion; D010991:Plethysmography; D012044:Regression Analysis
chemical_list: D005996:Nitroglycerin
vernacular_title: Zur Frage der Altersabhängigkeit des sog. Anspannungsindex und seines Berhaltens nach Gabe von Nitroglyzerin.