title: Mechanism of x descent in atrial pressure pulse.
mesh_terms: D000328:Adult; D016275:Atrial Function; D001794:Blood Pressure; D001795:Blood Pressure Determination; D006328:Cardiac Catheterization; D005260:Female; D006321:Heart / Q000502:physiology*; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D008946:Mitral Valve Stenosis / Q000503:physiopathology