in 10 open-chest dogs , myocardial contractile force was measured using a myocardial strain gauge arch during air and oxygen breathing before denervation ( intact heart ) and after bilateral vagotomies , sympathectomies and adrenalectomies with the intravenous administration of propranolol , phenoxybenzamine and atropin ( denervated heart ) .
C0027061
myocardial
C0018787
heart