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Table 1. Heat Pain Threshold and Heat Pain Tolerance at Three Dermatomes before and after Lumbar Epidural Administration of 5-mg Morphine and Saline Placebo

Values are mean ± SD.

P < 0.05 with Bonferroni correction.

* Epidural injection of morphine and saline placebo resulted in a significantly different area under the curve (AUC) describing the difference of the heat pain threshold and the heat pain tolerance from baseline versus  time, respectively.

Epidural injection of morphine and saline placebo resulted in a significantly different AUC describing the difference of the heat pain tolerance from baseline versus  time. The AUC describing the difference of the heat pain threshold from baseline versus  time was not significantly different but tended to be larger after epidural injection of morphine.

Times when a significantly different heat pain threshold and/or heat pain tolerance was measured (difference from baseline) between epidural injection of morphine and saline placebo.

Table 1. Heat Pain Threshold and Heat Pain Tolerance at Three Dermatomes before and after Lumbar Epidural Administration of 5-mg Morphine and Saline Placebo
Table 1. Heat Pain Threshold and Heat Pain Tolerance at Three Dermatomes before and after Lumbar Epidural Administration of 5-mg Morphine and Saline Placebo
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