[The effect of temperature changes on the spontaneous heart rate of the isolated surviving human embryonal heart].
The effect of changes in temperature on the spontaneous fetal heart rate (FHR) of 17 isolated human hearts obtained from early pregnancy was investigated. A slow increase in the temperature of the nutrient solution provoked a 10/min FHR increase pro every 1 degrees C change from 32 to 38 degrees C, and this change did not depend on weight and age of the hearts and the basic FHR. At 40 degrees C the tendency of FHR decrease could be observed especially in case of bigger hearts. As result of the decrease in the temperature of the nutrient solution the fetal hearts stopped beating between 22 and 12 degrees C.
D005318:Fetal Heart / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009200:Myocardial Contraction; D009924:Organ Culture Techniques; D009929:Organ Size; D013696:Temperature
Zur Temperaturabhängigkeit der Spontanfrequenz des isolierten überlebenden menschlichen embryonalen Herzens.