Indian Journal of Anaesthesia  
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CLINICAL INVESTIGATION
Year : 2014  |  Volume : 58  |  Issue : 3  |  Page : 281-286

Effects of dexmedetomidine on procedural pain and discomfort associated with central venous catheter insertion


Department of Anaesthesiology and Critical Care, Sri Venkateswara Institute of Medical Sciences, SVIMS University, Tirupati, Andhra Pradesh, India

Correspondence Address:
Dr. Aloka Samantaray
Department of Anaesthesiology and Critical Care, Sri Venkateswara Institute of Medical Sciences, SVIMS University, Tirupati - 517 507, Andhra Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5049.135038

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Background and Aim: Central venous catheter (CVC) insertion induces pain and discomfort to a conscious patient despite application of a local anaesthetic (LA) field block and this pain can be greatly lessened by using additional analgesics. The aim of this study was to evaluate the efficacy of dexmedetomidine along with LA field infiltration in controlling pain and discomfort associated with CVC insertion. Methods: A prospective, randomised, double-blind, placebo-controlled trial of 54 patients scheduled for planned CVC insertion was undertaken. Patients were randomly assigned into two groups of 27 each, to receive either dexmedetomidine (1 μg/kg) or 0.9% normal saline, along with LA field infiltration. Pain and discomfort score was measured at 5 time points. Results: The median pain score was worst for placebo group at local anaesthetic injection (6 [4-7]) and at the end of procedure (5 [4-5]), which was significantly attenuated in the dexmedetomidine group (4 [4-5] and 4 [3-5]; P = 0.007 and 0.040 respectively). The lower procedure related discomfort score in the immediate post-procedural period was statistically significant in dexmedetomidine group compared to placebo (4 [4-5] vs. 5 [4-6]; P = 0.008). Conclusions: Pre-procedural bolus dexmedetomidine infusion provides adequate analgesia and patient comfort for CVC insertion along LA field block. However, the tendency for excessive sedation and bradycardia associated with dexmedetomidine render it less desirable for this purpose.


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