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Pretreatment with remifentanil to prevent withdrawal after rocuronium in children
1Department of Anaesthesiology and Pain Medicine, Ajou University College of Medicine, Suwon, Korea.
Insights
Pretreating pediatric patients with remifentanil significantly reduces withdrawal movements from rocuronium injection. This method also helps maintain hemodynamic stability during anesthesia.
Area of Science:
- Anesthesiology
- Pediatric Anesthesia
- Pharmacology
Background:
- Rocuronium injection frequently causes pain and withdrawal responses in pediatric patients.
- Existing methods for mitigating this side effect are limited.
Purpose of the Study:
- To evaluate the efficacy of intravenous remifentanil as a pretreatment to prevent withdrawal responses during rocuronium injection in children.
Main Methods:
- A randomized, double-blind, placebo-controlled study involving 70 pediatric patients.
- Patients received either intravenous remifentanil (1 mug/kg) or saline before rocuronium injection.
- Hemodynamic parameters (MAP, heart rate) were monitored throughout the procedure.
Main Results:
- The incidence of withdrawal movements was significantly lower in the remifentanil group (23%) compared to the saline group (94%).
- No generalized movements were observed in the remifentanil group, unlike 51% in the saline group.
- Remifentanil pretreatment prevented significant increases in Mean Arterial Pressure (MAP) post-intubation.
Conclusions:
- Intravenous remifentanil at 1 microg/kg is a safe and effective pretreatment for reducing rocuronium-induced withdrawal movements in children.
- Remifentanil administration ensures hemodynamic stability during anesthesia induction and maintenance.
Background:
Pain from rocuronium injection is a common side-effect reported to occur in 50-80% of the patients. This randomized, double-blind, placebo-controlled study was designed to evaluate the efficacy of pretreatment with i.v. remifentanil on prevention of withdrawal response during rocuronium injection in paediatric patients.
Methods:
After obtaining parental consents, 70 paediatric patients were randomly allocated into two groups to receive either i.v. remifentanil 1 mug kg(-1) (remifentanil group, n=35) or i.v. saline 5 ml (saline group, n=35). Anaesthesia was induced with thiopental sodium 2.5% (5 mg kg(-1)) and the test drug was injected over 30 s. One minute after the test drug injection, rocuronium 1% (0.6 mg kg(-1)) was injected over 5 s and the response was recorded. Mean arterial pressure (MAP) and heart rate were recorded on arrival in the operating theatre, before and 1 min after the tracheal intubation.
Results:
The overall incidence of withdrawal movements was significantly higher in the saline group (33 patients; 94%) than that in the remifentanil group (8 patients; 23%) (P<0.001). No patient in the remifentanil group showed generalized movement, whereas 51% of patients in the saline group did. Remifentanil prevented significant increase in MAP after intubation.
Conclusion:
This study demonstrated that pretreatment with remifentanil 1 microg kg(-1) provided a safe and simple method for reducing the incidence of rocuronium-associated withdrawal movement with haemodynamic stability in children.
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