Table 3 Perfusion index change ratio and temperature change over time.

From: Correlation between paravertebral spread of injectate and clinical efficacy in lumbar transforaminal block

 

Responder (n = 26)

Non-responder (n = 28)

P value time

P value time, group

PI change ratio

  

0.002

0.821

 T5

1.8 (2.8)

1.1 (1.6)

  

 T15

2.5 (3.2)

1.0 (1.4)

  

 T30

2.7 (4.6)

0.7 (1.2)

  

Temperature change

  

0.139

0.328

 T5

− 0.1 (0.2)

− 0.0 (0.3)

  

 T15

− 0.1 (0.2)

− 0.0 (0.3)

  

 T30

− 0.2 (0.3)

− 0.1 (0.4)

  
  1. All data are presented as means (SD). PI: perfusion index, T0: before treatment; T5: 5 min following block, T15: 15 min following block, T30: 30 min following block, PI change ratio (PI at each time point—PI at T0/PI at T0), Temperature change (temperature at each time point—temperature at T0), Responder: patients who showed a reduction of ≥ 50% on the numeric rate scale for pain at 30 min after the block; Non-responder: patients who showed a reduction of less than 50%.
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