RT Book, Section
A1 Shemin, Richard J.
A1 Benharash, Peyman
A2 Cohn, Lawrence H.
A2 Adams, David H.
SR Print(0)
ID 1144165762
T1 Tricuspid Valve Disease
T2 Cardiac Surgery in the Adult, 5e
YR 2017
FD 2017
PB McGraw-Hill Education
PP New York, NY
SN 9780071844871
LK accesssurgery.mhmedical.com/content.aspx?aid=1144165762
RD 2024/04/18
AB The  tricuspid  valve  consists  of  three  leaflets  (anterior,  posterior,  and  septal),  the  chordae  tendinea,  two  discrete  papillary  muscles,  the  fibrous  tricuspid  annulus,  and  the  right  atrial  and  right  ventricular  myocardium  (Fig.  43-1A).  Valve  function  depends  on  coordination  of  all  these  components.  The  anterior  leaflet  is  the  largest.  The  septal  leaflet  is  the  smallest  and  arises  medially  directly  from  the  tricuspid  annulus  above  the  interventricular  septum.  Because  the  small  septal  wall  leaflet  is  fixed  and  is  relatively  spared  from  annular  dilation,  tricuspid  annular  sizing  has  been  based  on  the  dimension  of  the  base  of  the  septal  leaflet.1,2  The  posterior  leaflet  often  has  multiple  scallops.  The  anterior  papillary  muscle  provides  chordae  to  the  anterior  and  posterior  leaflets,  and  the  medial  papillary  muscle  provides  chordae  to  the  posterior  and  septal  leaflets.  The  septal  wall  gives  chordae  to  the  anterior  and  septal  leaflets.  There  may  be  accessory  chordal  attachments  to  the  right  ventricular  free  wall  and  the  moderator  band.