Left and right atrial dimensions (LA1, LA2, RA1, RA2) were measured from apical four-chamber view, at the end of the ventricular systole (fig 1). M-mode echocardiography was used for the measurement ...

If you clench your hand into a fist, this is approximately the same size as your heart ... valve is located between the right atrium and right ventricle and opens due to a build-up of pressure ...

If you clench your hand into a fist, this is approximately the same size as your heart ... The tricuspid valve separates the right atrium and right ventricle. It opens due to a build-up of ...