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The Effect of Clonidine on Peri-Operative Neuromuscular Blockade and Functional Recovery: A Randomized Placebo-Controlled Trial


Affiliations
1 Department of Anaesthesiology, Integral Institute of Medical Sciences and Research, Lucknow, Uttar Pradesh, India
2 King George's Medical University (KGMU), Lucknow, Uttar Pradesh, India
3 Department of Anaesthesiology and Critical Care, J.N. Medical College, AMU, Aligarh, Uttar Pradesh, India
 

Background: Alpha-2-agonists are as used adjunct for anaesthesia. We conducted this study with the aim to determine whether the addition of clonidine, an α-2-agonist, decreases the time to recovery from neuromuscular blockade caused by non-depolarising muscle relaxant. Secondary objectives were to know whether clonidine as an adjuvant improves hemodynamic stability, decreases stress hyperglycaemia, pain and time to discharge from Post-Anaesthesia Care Unit (PACU).

Methods: This placebo-controlled clinical trial, enrolled 64 patients into clonidine (n = 32) or placebo (saline) group (n = 32). Study drug was given 1.5 mcg/kg IV bolus at the time of induction followed by infusion (1.5 mcg/kg/hour) intra-operatively. Extubation was started when train-of-four (TOF) count was ≥ 2. Primary outcome measure was time to achieve TOF ratio of ≥ 70% and ≥ 90%, assessed at 5, 15, 30- and 60-min intervals following extubation.

Results: 2 patients in each group were excluded due to intra-operative requirement of additional supportive medications, hence in each group 30 were analysed. Significant difference was observed between clonidine and placebo groups in terms of time to achieve TOF ratio ≥ 70% and ≥ 90%, stress hyperglycemia, hemodynamic and pain profile, no statistical difference in the Ramsey sedation score and modified Aldrete score between groups. Patients given clonidine required repeat doses of non-depolarising muscle relaxant at longer intervals, with decrease in total amount administered. Clonidine group had a median time to achieve TOF ratio ≥ 70% at 15 min compared to 60 min in placebo group.

Conclusion: Clonidine hastens the recovery from neuromuscular block with reduced stress hyperglycaemia and post-operative pain, along with unaffected Ramsey sedation score and modified Aldrete score.


Keywords

Clonidine and Neuromuscular Recovery, Clonidine and Functional Recovery.
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  • The Effect of Clonidine on Peri-Operative Neuromuscular Blockade and Functional Recovery: A Randomized Placebo-Controlled Trial

Abstract Views: 446  |  PDF Views: 104

Authors

Nida Fatima
Department of Anaesthesiology, Integral Institute of Medical Sciences and Research, Lucknow, Uttar Pradesh, India
Ahmad Ozair
King George's Medical University (KGMU), Lucknow, Uttar Pradesh, India
Shahla Haleem
Department of Anaesthesiology and Critical Care, J.N. Medical College, AMU, Aligarh, Uttar Pradesh, India

Abstract


Background: Alpha-2-agonists are as used adjunct for anaesthesia. We conducted this study with the aim to determine whether the addition of clonidine, an α-2-agonist, decreases the time to recovery from neuromuscular blockade caused by non-depolarising muscle relaxant. Secondary objectives were to know whether clonidine as an adjuvant improves hemodynamic stability, decreases stress hyperglycaemia, pain and time to discharge from Post-Anaesthesia Care Unit (PACU).

Methods: This placebo-controlled clinical trial, enrolled 64 patients into clonidine (n = 32) or placebo (saline) group (n = 32). Study drug was given 1.5 mcg/kg IV bolus at the time of induction followed by infusion (1.5 mcg/kg/hour) intra-operatively. Extubation was started when train-of-four (TOF) count was ≥ 2. Primary outcome measure was time to achieve TOF ratio of ≥ 70% and ≥ 90%, assessed at 5, 15, 30- and 60-min intervals following extubation.

Results: 2 patients in each group were excluded due to intra-operative requirement of additional supportive medications, hence in each group 30 were analysed. Significant difference was observed between clonidine and placebo groups in terms of time to achieve TOF ratio ≥ 70% and ≥ 90%, stress hyperglycemia, hemodynamic and pain profile, no statistical difference in the Ramsey sedation score and modified Aldrete score between groups. Patients given clonidine required repeat doses of non-depolarising muscle relaxant at longer intervals, with decrease in total amount administered. Clonidine group had a median time to achieve TOF ratio ≥ 70% at 15 min compared to 60 min in placebo group.

Conclusion: Clonidine hastens the recovery from neuromuscular block with reduced stress hyperglycaemia and post-operative pain, along with unaffected Ramsey sedation score and modified Aldrete score.


Keywords


Clonidine and Neuromuscular Recovery, Clonidine and Functional Recovery.

References