[Adaptive capacity of the myocardium in middle-aged and elderly persons].
Myocardial activity was evaluated in 165 individuals between 60 and 82 years of age. Only one parameter, myocardial stress adaptation index (MSAI), was shown to differ significantly between individuals. An earlier diagnosis of coronary heart disease was not confirmed in 43 (26.1%) patients. Myocardial adaptability was quite good (MSAI greater than 7.1) in 98 (60%) patients. There was a direct correlation between plasma potassium levels and ST depression in response to stress, which makes the hypoxic origin of ST depression in the absence of other signs of coronary insufficiency in this category of patients rather questionable.
A P
AP
Chadaev
V I
VI
Lobzeva
E V
EV
Zhemerikina
G V
GV
Kharlap
D000222:Adaptation, Physiological; D000367:Age Factors; D000368:Aged; D002311:Cardiomyopathy, Dilated / Q000175:diagnosis / Q000503:physiopathology*; D006334:Heart Function Tests; D006801:Humans; D007008:Hypokalemia / Q000503:physiopathology; D008875:Middle Aged; D009200:Myocardial Contraction
Adaptatsionnye vozmozhnosti miokarda u lits pozhilogo i starcheskogo vozrasta.