Etiology of pure XXXX .

@entity1 @entity627 @entity339 @entity3618 @entity1030 @entity1145 @entity18032 @entity120 @entity5441 @entity1000 @entity997 @entity4303 @entity4924 @entity4794 @entity551 @entity121 @entity884
Of multiple etiologies for pure @entity997 , the causes may be divided into those associated with anatomically abnormal and anatomically normal tricuspid valves. Conditions associated with anatomically abnormal valves include @entity627 , floppy, @entity4924 , @entity4303 , @entity884 , @entity121 , and other rarer causes such as radiation, @entity5441 , and @entity18032 . Conditions associated with anatomically normal tricuspid valves include multiple causes of @entity3618 ( @entity1030 , @entity120 , and @entity120 due to @entity4794 ). Of 45 necropsy @entity1 with clinically documented pure @entity997 , conditions producing @entity120 ( @entity3618 , @entity4794 ) were the most frequent etiology (47 percent), followed by floppy (16 percent), @entity627 (11 percent), @entity1000 (9 percent), @entity4924 (7 percent), and miscellaneous conditions (10 percent). Of multiple causes of pure @entity339 , @entity1145 and leaflet area are useful measurements in establishing etiology: dilated anuli (greater than 12 cm) are associated with @entity4924 , floppy valves, and multiple causes of @entity120 . Increased leaflet areas are associated with floppy valves and @entity4924 . Anular insertion site separates floppy tricuspid valves from @entity4924 . Of 21 purely regurgitant operatively-excised tricuspid valves, the etiologies were: @entity627 (43 percent), "functional" due to @entity120 from @entity4794 (38 percent), @entity4924 (9 percent), @entity884 (5 percent), and floppy (5 percent). In contrast to etiology of pure @entity339 , @entity627 is the leading cause for operative excision of purely regurgitant tricuspid valves. @entity551 and tricuspid valve morphology disclosed that pulmonary arterial pressures greater than or equal to 55 mm Hg and tricuspid valve anuli greater than 12 cm were associated with anatomically normal tricuspid valves and that pulmonary arterial pressures less than or equal to 40 mm Hg and tricuspid anuli less than 12 cm were associated with anatomically abnormal tricuspid valves.
