Journal List > J Korean Soc Spine Surg > v.25(Suppl 1) > 1125264

Song, Lee, Park, Kim, and Byun: Comparison of Postoperative Pain Control Methods in Patients with Spinal Stenosis after Posterior Spinal Decompression

Abstract

Study Design

Prospective study.

Objectives

This study compared the early postoperative analgesic effects and the postoperative nausea and vomiting (PONV) associated with 3 methods of pain control after posterior spinal decompression.

Summary of Literature Review

Spinal surgery causes severe postoperative pain. Efficient and safe methods for postoperative analgesia after spinal surgery are necessary.

Materials and Methods

To determine the clinical symptoms and to assess improvements in postoperative pain, 52 patients in whom single-level posterior lumbar decompression was planned were randomly assigned to 3 groups. For postoperative pain control, 18 patients received a preoperative single-shot epidural injection (SEI), 16 patients received a postoperative continuous epidural injection (CEI), and 18 patients received only postoperative intravenous patient-controlled analgesia (IV-PCA). Patient ratings of pain intensity (visual analog scale score from 0 [no pain] to 10 [most severe pain]), nausea (from 0 [no nausea] to 5 [severe nausea]), and vomiting (from 0 [no vomiting] to 5 [severe vomiting]) were recorded immediately after the operation and at 4 hours, 12 hours, 1 day, and 2 days postoperatively.

Results

The CEI group showed significantly enhanced analgesic effects, followed by the SEI group and the IV PCA group (p<0.05). PONV due to postoperative pain control was more severe in the IV PCA group than in the other 2 groups (p<0.05).

Conclusions

Continuous epidural injection (CEI) is effective for postoperative pain control and minimizes the occurrence of PONV after posterior spinal decompression.

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Fig. 1.
Time course of postoperative in the SEI, CEI and IV-PCA groups assessed by VAS. Values are mean.
jkss-25-122f1.tif
Table 1.
patient characterics
  SEI CEI IV-PCA p-value
Age (years) 63.3±9.6 67.0±11.4 72.1±9.8 0.055
Gender        
  Male 7 (38.9%) 6 (37.5%) 8 (44.4%) 0.907
  Female 11 (61.1%) 10 (62.5%) 10 (55.6%)  
Operation        
  Post. decomp. only 16 (94.4%) 16 (100.0%) 18 (100.0%) 0.382
  +Discectomy 1 (5.6%) 0 (0.0%) 0 (0.0%)  

SEI: single-shot epidural injection, CEI: continuous epidural injection.

Table 2.
Side-effects of each pain control methods
  SEI CEI IV-PCA p-value
Nausea 2(11%) (POD #1) 0 2(11%) (post 12hrs) <0.001
      3(17%) (POD #1)  
      3(17%) (POD #2)  
Vomiting 2(11%) (POD #1) 0 1(6%) (post 12hrs) <0.001
      2(11%) (POD #1)  
      2(11%) (POD #2)  
Table 3.
Visual analogue scales among three groups in consecutive time points after surgery
  SEI CEI IV-PCA p-value
immediate post 5.78±0.732 5.94±1.181 6.44±1.097 0.133
post 4hr 5.06±0.725 4.44±0.629 5.50±1.200 0.005
post 12hr 4.28±1.074 4.06±0.772 5.33±1.188 0.001
POD #1 2.78±0.647 3.00±0.816 3.89±0.963 <0.001
POD #2 2.33±0.767 2.44±0.727 2.67±0.594 0.352
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