Table 9.
Arithmetic means of MCA flow rates ± SD (95% CI) after a BHT 40 days and 300 days from the onset of COVID-19.
| Flow Rates in MCA after BHT | ||||
|---|---|---|---|---|
| 40 Days | 300 Days | Difference | p * | |
| PSV (cm/s) | 124 ± 10 (120–129) |
122 ± 11.1 (121–131) |
−1.4 ± 2.7 (−2.7 to −0.11) |
0.065 |
| EDV (cm/s) | 70 ± 3.5 (68–72) |
69.1 ± 3.1 (66–71) |
−0.35 ± 1.1 (−0.58–0.5) |
0.837 |
| MV (cm/s) | 94.1 ± 8.8 (90–98) |
94.3 ± 8.1 (91–97) |
0.2 ± 1.4 (−0–33–2.2) |
0–118 |
| RI | 0.53 ± 0.02 (0.52–0.54) |
0.53 ± 0.04 (0.52–0.55) |
−0.006 ± 0.01 (−0.1–−0.0007) |
0.028 |
| PI | 0.78 ± 0.08 (0.75–0.82) |
0.78 ± 0.07 (0.76–0.82) |
−0.008 ± 0.03 (−0.02–0.008) |
0.286 |
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 dependent samples.