'a' wave in JVP Indicates
(a) Right atrial contractionRef: Harrison, 18th ed.,pg. 1823, fig. 227-1Graph of height of JVP with timeThe upward deflections are the"a" atrial contraction"c" ventricular contraction and resulting bulging of tricuspid into the right atrium during isovolumetric systole)"v" = venous fillingThe downward deflections of the wave are the"x" the atrium relaxes, and the tricuspid valve moves downwardthe "y" descent filling of ventricle after tricuspid opening.
Right atrial contraction
Closure of tricuspid valve
Onset of ventricular systole
Maximal atrial filling
C.V.S.