title: On the source of peak first time derivative (dZ/dt) during impedance cardiography.
abstract: This paper deals primarily with the timing and source of peak (dZ/dt). In observations on human volunteers and anesthetized dogs, the peak (dZ/dt) occurred during the rapid ejection phase of the ventricles. Evidence is presented that the ascending aorta is the source of peak (dZ/dt).
authors.affiliation: University of Minnesota Medical School, Minneapolis.
authors.forename: W G
authors.initials: WG
authors.lastname: Kubicek
mesh_terms: D000818:Animals; D002307:Cardiography, Impedance / Q000295:instrumentation / Q000379:methods*; D004285:Dogs; D006801:Humans; D010992:Plethysmography, Impedance / Q000379:methods*; D016276:Ventricular Function