AI Article Synopsis
- Splanchnic nerve neurolysis (SNN) is used to alleviate severe abdominal pain in cancer patients, and a study explored the effects of adding dexmedetomidine, an adjuvant, to enhance pain relief.
- In a double-blinded, randomized trial with 40 patients, one group received dexmedetomidine along with the standard anesthetic and ethanol injection, while the other did not.
- Results showed significantly lower pain scores and morphine requirements in the dexmedetomidine group at various time points post-injection, suggesting its effectiveness in improving pain management in this context.
Article Abstract
Background: Splanchnic nerve neurolysis (SNN) shows beneficial effects in reducing malignancy-associated refractory abdominal pain. Using adjuvants, such as dexmedetomidine to improve the pain was studied.
Objective: To detect any role of dexmedetomidine as an additive to local anesthetics with an alcohol injection in the chemical SNN process to improve pain in patients having upper-abdominal cancer.
Study Design: Double-blinded, prospective randomized study.
Setting: Department of Anesthesia and Intensive Care, faculty of medicine, Minia University,Egypt.
Methods: Forty patients with upper-abdominal malignancy-associated refractory abdominal pain underwent fluoroscopic guided SNN were divided into 2 groups. The SNN was performed by using 1.5 mL lidocaine 1%, dexmedetomidine 2 μg/kg, and then an injection of 4.5 mL of ethanol 96% on each side in group D and without dexmedetomidine in group C is done. Patients gave the score of abdominal pain expressed by the Visual Analog Scale (VAS), which measures the pain intensity. Scors were recorded prior to injection, during injection, after injection by 5 min, and after 2, 6, 12, 24, 72 hours, one week (W), 2 W, one month (M), and 2 M. Also, we recorded the amount of morphine required to relieve the residual pain after injection, the effect of procedure on quality of life (QOL), and any complication after injection.
Results: VAS scores showed a significant increase in group C in comparison to group D during injection, after injection by 5 min, 2, 6, 12, 24 hours, one and 2 months (P < 0.0001, 0.0001, 0.029, 0.031, 0.025, 0.040, 0.020, 0.015), respectively. The morphine requirement was significantly increased at one W, one M, and 2 M in group C in comparison to Group D (P < 0.044, 0.017, 0.033) with no significant change in the QOL observed between groups.
Limitations: The limitations of this study were a relatively small sample size and short period of follow-up.
Conclusions: This study revealed that using dexmedetomidine in the chemical SNN process improves the pain results from injection of alcohol and refractory cancer related pain with reduction in the consumption of morphine in patients with upper-abdominal malignancy.
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