Figure 1: Schematic representation of the LVOT according to the
position of the fetal back following to the classification
- Position 1: foetal back between 12 o’clock and 3 o’clock
- Position 2: foetal back between 3 o’clock and 6 o’clock
- Position 3: foetal back between 6 o’clock and 9 o’clock
- Position 4: foetal back between 9 o’clock and 12 o’clock
Figure 2: Total average
scores for the three centres over the three
periods
The average total scores for the quality criteria across all centres
were 5.49/7 (95% CI: 5.36-5.62), 5.91/7 (95% CI: 5.80-6.03), and 5.70
(95% CI: 5.58-5.82) for study periods before 2016, in 2017, and after
2020, respectively.
There was a significant difference between the scores obtained before
2016 and in 2017 (p < 0.001) and also between the
scores before 2016 and in 2020 (p = 0.039). There was no significant
difference following the introduction of the quality criteria; 2017 vs.
2020, p = 0.054
Figure 3: Average scores
according to
trimester
Score averages were 5.75/7 (95% CI: 5.65-5.85) and 5.65/7 (95% CI:
5.55-5.75) in the second and third trimester respectively.
Figure 4: Average scores
according to cardiac
position
In Position 1 (with the back at between 12 o’clock and 3 o’clock), the
average score was 5.59/7 (95% CI: 5.45-5.73). In Position 2 (back
between 3 o’clock and 6 o’clock), the average score was 5.99/7
(95% CI:5.87-6.10). In Position 3 (back between 6 o’clock and 9
o’clock), the average score was 5.82/7 (95% CI: 5.65-5.98). In Position
4 (back between 9 o’clock and 12 o’clock), the average score was 5.33/7
(95% CI: 5.19-5.48).
Comparing the score averages obtained according to the position of the
back of the foetus, we found a statistically significant difference
between Positions 1 and 2 (p <0,01), between Positions
2 and 4 (p <0,01), and between Positions 3 and 4
(p < 0,01).
Figure 5: Average scores according
to centre for the three periods
combined
The average score at the GHSR was 5.90/7 (95% CI: 5.8-6), at the Saint
Joseph’s Hospital 5.41/7 (95% CI: 5.29-5.53), and at the Var centre
5.83/7 (95% CI: 5.69-5.98)
Figure 6: Average scores according
to centre for each of the three periods
Figure 7: Average scores according
to operator for the three periods
combined
Figure 8: Average scores according
to practitioner for each of the three periods
Table 1: The percentage of quality criteria considered
in all three periods combined and according to the position of the back
of the foetus