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. 2022 Jul 4;67:101549. doi: 10.1016/j.ppedcard.2022.101549

Table 2.

Comparison of initial transthoracic echocardiogram image quality metric between non-COVID and COVID patients in 2020.

Variable Scale Non-COVID
N = 40
COVID
N = 40
P-value
Mean (SD) score (Out of 23) 21.3 (1.5) 18.6 (2.5) <0.001
Image orientation
Parasternal long axis Yes 35 (87.5 %) 40 (100.0 %) 0.021
Parasternal short axis Yes 39 (97.5 %) 40 (100.0 %) 0.314
Apical 4 chamber Yes 36 (90.0 %) 38 (95.0 %) 0.396
Subcostal sagittal Yes 29 (72.5 %) 17 (42.5 %) 0.007
Suprasternal notch Yes 34 (85.0 %) 36 (90.0 %) 0.499
2D Imaging
Brightness level appropriate Agree 28 (70.0 %) 13 (32.5 %) 0.003
Somewhat agree 10 (25.0 %) 25 (62.5 %)
Disagree 2 (5.0 %) 2 (5.0 %)
Balanced penetration: resolution Agree 26 (65.0 %) 23 (57.5 %) 0.050
Somewhat agree 10 (25.0 %) 17 (42.5 %)
Disagree 4 (10.0 %) 0 (0.00 %)
Region of interest presented well Agree 39 (97.5 %) 23 (57.5 %) <0.001
Somewhat agree 1 (2.5 %) 17 (42.5 %)
Color-flow imaging
Frame rate appropriate Agree 38 (95.0 %) 11 (27.5 %) <0.001
Somewhat agree 2 (5.0 %) 29 (72.5 %)
Gain level appropriate Agree 39 (97.5 %) 30 (75.0 %) 0.003
Somewhat agree 1 (2.5 %) 10 (25.0 %)
Nyquist limit settings appropriate Agree 37 (92.5 %) 31 (77.5 %) 0.060
Somewhat agree 3 (7.5 %) 9 (22.5 %)
Spectral Doppler display
Choice of Doppler appropriate Agree 40 (100.0 %) 40 (100.0 %)
Gain level appropriate Agree 40 (100.0 %) 29 (72.5 %) <0.001
Somewhat agree 0 (0.00 %) 11 (27.5 %)
Scale adjusted to provide maximal signal size Agree 38 (95.0 %) 18 (45.0 %) <0.001
Somewhat agree 0 (0.00 %) 22 (55.0 %)
Disagree 2 (5.0 %) 0 (0.00 %)