Table 4: Relationship between N vs. B ratio, N vs. P ratio and eachVAE preventive measure.
N vs. B ratio: Nurse vs. bed ratio; N vs. P ratio: Nurse vs. MV patient ratio.
D vs. B ratio: Doctor vs. bed ratio; D vs. P ratio: Doctor vs. MV patient ratio.
B: Benzodiazenpines; LTVV: Low tidal volume ventilation; GRV:Gastric remaining volume; S: Sucralfate; D: dexmedetomidine.
Apply the chi-square test to calculate the relationship between each preventive measure and N vs. B and N vs. P ratio.
*P<0.05
| N vs. B ratio | N vs. P ratio | D vs. B ratio | D vs. P ratio |
<2 | >2 | P | <1 | >1 | P | <5 | >5 | P | <2 | >2 | P |
Oral care |
Method |
Brushing | 4 | 4 | 0.414 | 5 | 3 | 0.186 | 5 | 3 | 0.539 | 4 | 4 | 0.838 |
Not brushing | 13 | 11 | 17 | 7 | 12 | 12 | 13 | 11 |
Frequency |
<4 times a day | 10 | 13 | 0.049* | 15 | 8 | 0.874 | 11 | 12 | 0.337 | 11 | 12 | 0.337 |
>4 times a day | 7 | 2 | 7 | 2 | 6 | 3 | 6 | 3 |
SAT |
Implementation |
YES | 12 | 14 | 0.365 | 20 | 6 | 0.038* | 16 | 10 | 0.047* | 15 | 11 | 0.281 |
NO | 4 | 2 | 2 | 4 | 1 | 5 | 2 | 4 |
Frequency |
Daily | 9 | 4 | 0.018* | 8 | 5 | 0.690 | 7 | 6 | 0.420 | 6 | 7 | 0.234 |
Other | 3 | 10 | 10 | 3 | 9 | 4 | 9 | 4 |
SBT |
Implementation |
YES | 15 | 14 | 0.544 | 19 | 10 | 0.935 | 14 | 15 | 0.087 | 16 | 13 | 0.471 |
NO | 2 | 1 | 3 | 0 | 3 | 0 | 1 | 2 |
Frequency |
Daily | 2 | 2 | 0.945 | 3 | 1 | 0.849 | 2 | 2 | 0.941 | 3 | 1 | 0.390 |
Other | 13 | 12 | 16 | 9 | 12 | 13 | 13 | 12 |
Sedative |
Usage |
B<50% | 14 | 7 | 0.582 | 15 | 6 | 0.638 | 15 | 6 | 0.004* | 13 | 8 | 0.169 |
B>50% | 7 | 4 | 8 | 3 | 2 | 9 | 4 | 7 |
Fluid balance control |
Implementation |
YES | 15 | 15 | 0.144 | 20 | 10 | 0.555 | 16 | 14 | 0.927 | 16 | 14 | 0.927 |
NO | 2 | 0 | 2 | 0 | 1 | 1 | 1 | 1 |
Indicator |
Negative | 5 | 3 | 0.825 | 7 | 1 | 0.589 | 7 | 1 | 0.024* | 5 | 3 | 0.544 |
Non-negative | 10 | 12 | 13 | 9 | 9 | 13 | 11 | 11 |
LTVV |
Implementation |
YES | 14 | 14 | 0.285 | 19 | 9 | 0.387 | 15 | 13 | 0.893 | 15 | 13 | 0.893 |
NO | 3 | 1 | 3 | 1 | 2 | 2 | 2 | 2 |
Setting |
≤7mL/kg | 1 | 2 | 0.630 | 2 | 1 | 0.122 | 3 | 0 | 0.088 | 1 | 2 | 0.457 |
7~10mL/kg | 13 | 12 | 17 | 8 | 12 | 13 | 14 | 11 |
Anti-ulcer drugs |
Implementation |
YES | 13 | 10 | 0.411 | 16 | 7 | 0.595 | 14 | 9 | 0.160 | 12 | 11 | 0.863 |
NO | 4 | 5 | 6 | 3 | 3 | 6 | 5 | 4 |
Usage |
S>1/3 | 5 | 1 | 0.123 | 4 | 2 | 0.858 | 5 | 1 | 0.190 | 5 | 1 | 0.076 |
S<1> | 8 | 9 | 12 | 5 | 9 | 8 | 7 | 10 |