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Comparison of the effects of topical lignocaine spray applied before or after induction of anaesthesia on the pressor response to direct laryngoscopy and intubation

 

作者: S. Mostafa,   B. Murthy,   P. Barrett,   P. McHugh,  

 

期刊: European Journal of Anaesthesiology  (OVID Available online 1999)
卷期: Volume 16, issue 1  

页码: 7-10

 

ISSN:0265-0215

 

年代: 1999

 

出版商: OVID

 

关键词: LARYNGOSCOPY, intubation, lignocaine spray;CARDIOVASCULAR PRESSOR RESPONSE, heart rate, blood pressure

 

数据来源: OVID

 

摘要:

In an attempt to attenuate the cardiovascular pressor response to laryngoscopy and intubation, 30 patients presenting for routine ophthalmic surgery were studied and were randomly allocated into two groups: group A (n= 15) received direct laryngeal/tracheal lignocaine spray immediately before intubation; and group B (n= 15) received orolaryngeal lignocaine spray before the induction of anaesthesia. In both groups, general anaesthesia was induced with thiopentone 3-5 mg kg−1, followed by atracurium 0.6 mg kg−1to facilitate tracheal intubation. Laryngoscopy and endotracheal intubation caused a significant increase in heart rate, by 28% in group A and 23% in group B (P<0.05 in both), and in diastolic blood pressure, by 28% in group A and 24% in group B (P<0.05 in both). In group A, the systolic blood pressure also increased significantly (by 18%) after intubation, but there was no significant change in group B. In addition, the plasma lignocaine concentrations remained well below the toxic range in both groups. It was concluded that topical lignocaine administration as an orolaryngeal spray before the induction of anaesthesia is effective in reducing but not abolishing the pressor response to laryngoscopy and endotracheal intubation

 



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