Definition for Ventricular filling
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Revision as of 18:41, 14 November 2011 by Duddy (Talk | contribs) (Created page with "Ventricular filling is when the ventricular expand and the pressure falls below that of the atria. This leads to the Atrio-Ventricular (AV) valves to open and blood rushes into t...")
Ventricular filling is when the ventricular expand and the pressure falls below that of the atria. This leads to the Atrio-Ventricular (AV) valves to open and blood rushes into the ventricles. The ventricular pressure rises and the atrial pressure falls. This ventricular filling occurs in three phases:
-> Rapid Ventricular filling -> Diastasis - slow filling (P wave on ECG occurs at end of this slow filling). -> Atrial Systole - Contraction of the atrium. The right atrium contracts slightly before the left atrium.
As the ventricles fill, the valve leaflets move to the closed position. The End Diastolic Volume = 130 ml, where as only 40 ml is contributed by the atrial systol.
