[The drug treatment of cardiogenic shock--our experience].

For the period 1970-1989 in the intensive care unit of the National Center for Cardiovascular Diseases, 178 patients with cardiogenic shock were treated and died. These patients were studied retrospectively. In all patients an acute myocardial infarction was proved clinically and post mortem.

[Changes in the hemoglobin A2 level of patients with ischemic heart disease].

40 patients with ischemic heart disease were studied. In 60% of them a higher content of HbA2 was found. These data for higher frequency of HbA2 among the patients with ischemic heart disease do not correspond with the average incidence of the genetically determined anomaly A2-beta-thalassemia among the Bulgarian population.

[Choice of the effective electrical power in cardioversion].

On the base of his own studies, the author established that the effective quantity of electric energy for cardioversion is from 150 to 350 W/s. A greater quantity of energy (285.6 +/- 53.

[Clinico-hemodynamic changes in paroxysmal cardiac arrhythmias].

The stroke and minute volumes, according to the method of Fick and formula of Staar, were studied with a view to the necessity of objectivization of some hemodynamic indices for the needs of clinical practice. Based on the good results, obtained by the formula of Staar, the stroke volume was calculated according to the same mode in patients with rhythm disorders. The stroke volume was established to reveal a dependence on heart rate, type of rhythm disorder and character of the basic disease.

[Electroshock (cardioversion) treatment problems in rhythm disorders].

Some problems associated with the results from the electroshock treatment of 1027 patients with rhythm disorders are discussed, as well as the choice of the necessary quantity of electric energy and the way of preparation of the patients. It was established, that sinus rhythm restoration was attained in 90.1% under planned conditions, and in emergency cases--in 86.