Table 6.
Arithmetic means of flow velocities through MCA and standard deviations (±SD) (95% CI) of these parameters.
| Subject Groups | p * | ||
|---|---|---|---|
| COVID-19 | Controls | ||
| At rest | |||
| PSV (cm/s) | 106 ± 12.5 (101–112) | 121 ± 5.8 (117–122) | <0.001 |
| EDV (cm/s) | 52.1 ± 4.7 (50–55) | 56.4 ± 5.3 (53–59) | <0.001 |
| MV (cm/s) | 72.2 ± 7.1 (68–76) | 81.4 ± 7.4 (77–84) | <0.001 |
| RI | 0.52 ± 0.03 (0.50–0.53) | 0.55 ± 0.03 (0.54–0.57) | <0.001 |
| PI | 0.74 ± 0.06 (0.72–0.77) | 0.78 ± 0.04 (0.76–0.79) | <0.001 |
| After BHT | |||
| PSV (cm/s) | 122 ± 11.1 (116–127) | 162 ± 7.4 (157–164) | <0.001 |
| EDV (cm/s) | 69.1 ± 3.1 (66–71) | 86 ± 5.6 (81–89) | <0.001 |
| MV (cm/s) | 94.3 ± 8.1 (90–98) | 112.1 ± 4 (107–116) | <0.001 |
| RI | 0.53 ± 0.04 (0.51–0.53) | 0.50 ± 0.01 (0.49.-0.52) | <0.001 |
| PI | 0.78 ± 0.07 (0.74–0.81) | 0.75 ± 0.04 (0.73–0.77) | <0.001 |
Legend: PSV—peak systolic velocity, EDV—end-diastolic velocity, MV—mean flow velocity, RI—resistance index, PI—pulsatility index, BHT—breath-holding test. * t-test for independent samples.