[Metazosin tablets (Kenosin) in the treatment of chronic congestive heart failure].
BACKGROUND
Postsynaptic alpha 1 adrenoceptor blockers are considered suitable drugs for modern vasodilatatory treatment of chronic heart failure. Therefore new analogues of these substances with more favourable characteristics than those of their main representative, prazosin are sought. The objective of the present work was to evaluate the therapeutic effect and tolerance of the original alpha 1-adrenoceptor blocker metazosin developed in the Research Institute for Pharmacy and Biochemistry (VUFB).


RESULTS
In a multicentre clinical trial metazosin (tablets à 10 mg), 10-20 mg/day, were added to standard treatment of 56 patients of both sexes suffering from chronic congestive heart failure, for a period of eight weeks. The administration of metazosin led to rapid improvement of subjective complaints (in particular dyspnoea) as well as objective symptoms of peripheral congestion, to a significant (p < 0.05) regression of X-ray signs of pulmonary congestion and a slight (but statistically significant--p < 0.05) increase of the ejection fraction and cardiac output. After two months treatment the functional degree of severity of insufficiency according to the NYHA classification decreased from 2.7 to 2.2. Metazosin did not induce tachycardia and was well tolerated by the patients.


CONCLUSIONS
Metazosin (Kenosin) tablets is a suitable supporting drug in the comprehensive treatment of chronic cardiac failure, in particular if refractory to treatment.
D000317:Adrenergic alpha-Antagonists / Q000008:administration & dosage* / Q000627:therapeutic use; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006333:Heart Failure / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011799:Quinazolines / Q000008:administration & dosage* / Q000627:therapeutic use
D000317:Adrenergic alpha-Antagonists; D011799:Quinazolines; C062636:metazosin
Metazosin tabl. (Kenosin), pri lécbĕ chronického mĕstnavého srdecního selhávání.