Inaccuracy of Wedge Pressure as an Index of Pulmonary Capillary Pressure
The wedge and left atrial pressures were compared in 12 subjects with congenital and acquired heart disease; all experiments were carried out with closed chest under basal conditions. A poor correlation between the wedge and left atrial pressures was noted in over half the patients. The wedge pressure is especially inaccurate in mitral stenosis with marked elevations in left atrial pressure.
- © 1958 American Heart Association, Inc.