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Table 2 Peripheral block scores (PBS) and block success

From: Color Doppler ultrasonography of an agitated solution is predictive of accurate catheter placement for a continuous popliteal sciatic nerve block

Comparison

PBS 10 (N = 75)

PBS 20 (N = 75)

PBS 30 (N = 71)

Block success (N = 81)

Tibial and CP coverage

    

 None (n = 10)

12 (8, 14)

9 (4, 13)

8 (4, 14)

7/10

 Partial (n = 30)

8 (3, 13)

5 (0, 8)

1 (0, 6)

28/30

 Complete (n = 41)

9 (5, 12)

6 (1, 9)

3 (0, 7)

40/41

 P value

0.02†

0.01†

<  0.01†

0.02††

Tibial and CP coverage

    

 None (n = 10)

12 (8, 14)

9 (4, 13)

8 (4, 14)

7/10

 Partial + complete (n = 71)

8 (4, 13)

5 (0, 9)

3 (0, 7)

68/71

 P value

0.01†

<  0.01†

<  0.01†

0.02††

  1. N represents number of patients with peripheral block scores (PBS) at given time interval (lower score = greater blockade, range 0-14), block success includes all patients. n represents number of patients in each subgroup. Median (10th, 90th) is used to summarize continuous variables. Fractions, a/b, are used to summarize categorical variables, where a is the count and b is the subgroup size
  2. †P values were calculated using the Kruskal-Wallis test for continuous variables
  3. ††P values were calculated using the Pearson’s Chi-squared test for categorical variables
  4. All P values are significant. CP common peroneal
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Perioperative Medicine

ISSN: 2047-0525