[Incidence and presentation of myocardial infarction in Tyrol, Austria; (WHO ischaemic heart disease register Innsbruck 1971/72) (author's transl)].

In 1971 a population-based Ischaemic Heart Disease (IHD) Register was established in the Innsbruck area as part of the WHO international collaborative study. Demographic and geographic data covering the area, as well as the locally-applied methods are described. One hundred and seventy four cases (133 males and 41 females) of acute myocardial infarction (AMI) were registered in the age group 20-64 years.

[Special problems of pacemaker-therapy in infants and children (author's transl)].

The special problems of pacemaker-therapy in infants and children are reported and compared with those of adults. The possibilities of application of pacemakers and the indications for temporary or permanent use are discussed. Special attention is paid to the disadvantages of presently available pacemakers for children due to electro-physiologic and hemodynamic facts.

Hypoxic, isolated rat heart: hemodynamic and metabolic effects of nitroglycerin.

The purpose of the study was to evaluate the effects of nitroglycerin on the mechanical and metabolic performance of the mammalian heart without interference from peripheral vascular and neurohumoral influences. Isolated rat hearts were perfused with a buffer containing 1 mug of alcoholic nitroglycerin/ml or an equivalent amount of alcohol. Mechanical performance was analyzed during external and isovolumic work; all hearts were subjected to mild hypoxia.