Related Experiment Video
Updated: Aug 23, 2026
Sterile Pericarditis in Aachener Minipigs As a Model for Atrial Myopathy and Atrial Fibrillation
Published on: September 24, 2021
Persistent atrial paralysis: Case report with light microscopy and ultrastructural analyses
S A Turner1, M I Bossart, T Klima
1Divisions of Cardiology, Cardiovascular Surgery, Pathology, and the Cardiovascular Surgical Research Laboratories of the Texas Heart Institute and St. Luke's Episcopal Hospital, Houston, Texas.
Abstract:
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.
