Persistent atrial paralysis: Case report with light microscopy and ultrastructural analyses.
Persistent atrial paralysis in a patient with complete heart block and mild mitral insufficiency is presented. Left atrial specimens obtained during implantation of a permanent cardiac pulse generator showed evidence of hypertrophy and fibrosis; subcellular degenerative changes ranged from near normal to irreversible, thus suggesting that atrial paralysis may be due to the replacement of normal atrial muscle with nonfunctional fibrous tissue.
Turner
S A
SA
Divisions of Cardiology, Cardiovascular Surgery, Pathology, and the Cardiovascular Surgical Research Laboratories of the Texas Heart Institute and St. Luke's Episcopal Hospital, Houston, Texas.
Bossart
M I
MI
Klima
T
T
Leachman
R D
RD
Cooley
D A
DA
Norman
J C
JC