Left atrial and left ventricular pressures in subjects without cardiovascular disease: observations in eighteen patients studied by transseptal left heart catheterization.

@article{Braunwald1961LeftAA,
  title={Left atrial and left ventricular pressures in subjects without cardiovascular disease: observations in eighteen patients studied by transseptal left heart catheterization.},
  author={Eugene Braunwald and E C Brockenbrough and C J Frahm and John Ross},
  journal={Circulation},
  year={1961},
  volume={24},
  pages={267-9}
}
Transseptal left heart catheterizations were carried out in 18 patients without apparent evidence of organic cardiovascular disease. These studies have permitted delineation of the pressures that exist in the left side of the heart in normal subjects studied in a basal physiologic state.