Key result
Measuring left ventricular minimum diastolic pressure referenced to the uppermost blood level in the chamber yielded -0.6 mm Hg versus 5.1 mm Hg when referenced to midchest (P<.001).
Why the study?
Does referencing intracardiac pressure to the uppermost blood level in the LV chamber (H) compared to midchest level improve the accuracy of left ventricular minimum diastolic pressure measurement in patients undergoing cardiac catheterization?
Population
7 normal patients undergoing routine cardiac catheterization, and 10 cardiologists evaluated for their…
Comparison
Measurement of left ventricular minimum… vs Measurement of LVPmin referenced to the standard…
Design
Other
Authors
Loading...
New zero level H may standardize LV pressure references; leaves open multicenter validation before routine adoption.
Cross-Sectional (n=7)
Does referencing intracardiac pressure to the uppermost blood level in the LV chamber (H) compared to midchest level improve the accuracy of left ventricular minimum diastolic pressure measurement in patients undergoing cardiac catheterization?
Absolute Event Rate: -0.6% vs 5.1%
p-value: p=<.001
Referencing intracardiac pressure to the uppermost blood level in the LV chamber rather than midchest avoids systematic overestimation due to hydrostatic effects.
Courtois et al. (1995) conducted a cross-sectional in Normal patients undergoing routine cardiac catheterization (n=7). Reference level H (uppermost blood level in the LV chamber) vs. Zero level at midchest was evaluated on Left ventricular minimum diastolic pressure (LVPmin) (p=<.001). Measuring left ventricular minimum diastolic pressure referenced to the uppermost blood level in the chamber yielded -0.6 mm Hg versus 5.1 mm Hg when referenced to midchest (P<.001).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: