what is the a wave in JVP
atrial systole
venous back flow
what is the c wave in the JVP
tricuspid valve bulge back into atrium during isovolumetric contraction
what is the v wave in the JVP
rise in atrial pressure just before tricuspid valve opens
what is the x descent in JVP
atrial relaxation
what is th y descent in the JVP
tricuspid valve opening