SIECKE, H Effect of atrial systole on ventricular pressure at variable P-Q intervals. [electronic resource] - The American journal of physiology Nov 1958 - 429-32 p. digital Publication Type: Journal Article ISSN: 0002-9513 Standard No.: 10.1152/ajplegacy.1958.195.2.429 doi Subjects--Topical Terms: Heart BlockSystoleVentricular Pressure