Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Intra- and inter-observer variability of pulsed-wave Doppler measurements
| Mean error±SD | Mean error±SD, % | |
|---|---|---|
| Intraobserver variability | ||
| PAT (ms) | 0.4±1.2 | 1.3±3.9 |
| ET (ms) | 0.1±1.1 | 0.3±1.8 |
| PAT/ET | 0.01±0.02 | 1.0±3.3 |
| Pulmonary TVI (cm) | 0.00±0.02 | −0.3±1.5 |
|
| ||
| Interobserver variability | ||
| PAT (ms) | 2.0±1.8 | 6.7±6.0 |
| ET (ms) | 1.2±1.3 | 1.8±2.0 |
| PAT/ET | 0.02±0.03 | 4.9±5.6 |
| Pulmonary TVI (cm) | 0.01±0.06 | 0.5±4.1 |
PAT, pulmonary acceleration time; ET, ejection time, TVI, time velocity integral.
