Key result
Epinephrine accelerates pulsation rates in non-innervated embryonic chick myocardium, particularly at slower baseline rates.
Why the study?
Does epinephrine accelerate the pulsation rate in the non-innervated embryonic chick myocardium?
Does epinephrine accelerate the pulsation rate in the non-innervated embryonic chick myocardium?
Epinephrine directly accelerates the pulsation rate of the embryonic chick myocardium even before innervation, demonstrating a direct myocardial effect.
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Supports direct myocardial epinephrine responsiveness pre-innervation; hypothesis-generating with no immediate clinical implications.
Barry Alexander (1950) studied Embryonic chick heart myocardium. Epinephrine was evaluated on Inherent rate of pulsation. Epinephrine applied to the non-innervated embryonic chick myocardium caused an abrupt acceleration in the inherent rate of pulsation, with slower initial rates showing more marked acceleration.
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