[The use of amyl nitrite and of a noradrenaline-like substance in the analytic study of cardiac sounds of acquired valvular disorders].
D000680:Amyl Nitrite; D006347:Heart Sounds; D006349:Heart Valve Diseases; D006351:Heart Valves; D006801:Humans; D009573:Nitrites / Q000494:pharmacology*; D009638:Norepinephrine
D009573:Nitrites; D000680:Amyl Nitrite; D009638:Norepinephrine
HEART VALVES/diseases; NITRITES/pharmacology