Page 129 - Ultrasonography in Prehospital and Emergency Medicine - Rein Ketelaars

Emergency physician-performed ultrasound-guided nerve blocks in proximal femoral fractures 127
Table 5.4 Influence of relevant factors on absolute pain reduction 30 minutes after ultrasound- guided regional anesthesia
Factors
Mean difference or correlation
95% CI
p value
t-test
Gender (male, female) –0.03 Laterality (left, right) –0.55 Prehospital analgesics (no, yes) 0.96 Block type (femoral nerve, FICB) 1.25 Ropivacaine concentration (0.375%, 0.75%) –0.13
One-way ANOVA
Fracture type (femoral neck, trochanteric, femoral shaft)
Correlation Pearson’s r Age –.063 Volume of ropivacaine 0.375% –.230 Volume of ropivacaine 0.75% –.078
–1.48, 1.42 .97 –1.95, 0.85 .43 –3.56, 5.47 .57 –0.32, 2.81 .11 –1.56, 1.30 .43
.10
.32 .14 .33
Mean difference shows the absolute reduction in pain score on a 0-10 numeric rating scale and is without dimen- sion, including 95% confidence interval (CI). A negative difference indicates the pain score reduction is greater in the variable’s first value (e.g. male > female). A positive difference indicates the greatest reduction in the second value (e.g. male < female).
FICB, fascia iliaca compartment block.
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