[Correlation between respiration and cardiac contraction rates in premature infants].
D004562:Electrocardiography; D005333:Fetus; D006321:Heart / Q000254:growth & development; D006339:Heart Rate; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D012018:Reflex; D012119:Respiration
O korreliatsiiakh mezhdu dykhaniem i chastotoi sokrashcheniia serdtsa u nedonoshennykh deteĭ.