From Big Medical Encyclopedia

EMBRYOCARDIA (embryocardia; Greek embryon a uterine fruit, a germ + kardia heart) — the auskultativny phenomenon which is characterized by a pendulum heart rhythm, i.e. equal duration of systolic and diastolic intervals between cardiac sounds and with an equal volume of I and II tones at number of cordial reductions more than 120 in 1 min.

E. it is described at the end of 19 century by W. Stokes, and also A. Yushar who gave a phenomenon the name «embryocardia». AA. it is necessary to distinguish from a so-called rabbit rhythm (kiliklokardiya), at Krom only one cardiac sound is listened with a high frequency of serdtsebiyeniye, as at a rabbit.

Normal E. it is listened at a fruit (at auscultation of a stomach at pregnant women). At adults E. is a symptom of cardiac pathology since both components it a component — a pendulum rhythm and tachycardia (see) — belong to patol. to signs. AA. it is observed more often at damage of a myocardium of the different nature with disturbance of sokratitelny function of heart, sometimes at a Bouveret's disease, at an atrial flutter with low extent of blocking of carrying out impulses to ventricles of heart, at a collapse (see). The reasons of such disturbances often happen myocarditis (see) and toxic damages at the infectious diseases which are especially proceeding with fever (pneumonia, typhus) and also at malignant tumors, peritonitis, a diabetic coma. AA. it can be noted also at shock, including developed owing to massive blood loss.

At any disease emergence E. predictively adversely also demands an intensive care of a basic disease or patol. process.

E. I. Sokolov, S. A. Harkov.