Changes in plasma catecholamine concentrations and haemodynamic effects of rocuronium and vecuronium in elderly patients

G. D. Shorten, Jeffrey Uppington, M. E. Comunale

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Rocuronium administration may cause tachycardia and an increase in cardiac index. Pancuronium, another steroidal non-depolarizing muscle relaxant, augments release of, and blocks re-uptake of catecholamines at adrenergic nerve endings. This study compared the haemodynamic effects of, and changes in catecholamine concentrations following administration of vecuronium (0.12 mg kg-1) or rocuronium (0.9 mg kg-1) to elderly patients. Thirty patients, 65 years or older, not receiving β-blockers, were studied. During thiopentone, fentanyl, nitrous oxide anaesthesia, either rocuronium (0.9 mg kg-1) or vecuronium (0.12 mg kg-1) was administered, according to random allocation. In all 30 patients, blood pressure and heart rate were measured before induction of anaesthesia, immediately and 1 min after induction, 1 and 2 min after muscle relaxant administration, and immediately, 1 and 2 min after tracheal intubation. In the latter 20 patients, samples for plasma catecholamine estimation were obtained prior to, and 1 min after muscle relaxant administration and 1 min after tracheal intubation. Blood pressure and heart rate were similar in the two groups throughout the study. Plasma noradrenaline concentrations were similar in the vecuronium and recuronium groups prior to muscle relaxant administration (589(SD240) and 444(SD213) pg mL-1, respectively), 1 min after muscle relaxant administration (602(SD220) and 520(SD392) pg mL-1, respectively and 1 min after tracheal intubation (597(SD351) and 440(SD181) pg mL, respectively). There was no significant change in either plasma noradrenaline or adrenaline concentrations in either group following muscle relaxant administration or tracheal intubation. The use of rocuronium (0.9 mg kg-1) in elderly patients does not result in a clinically significant change in heart rate, blood pressure or plasma catecholamine concentration.

Original languageEnglish (US)
Pages (from-to)335-341
Number of pages7
JournalEuropean Journal of Anaesthesiology
Volume15
Issue number3
StatePublished - May 1998
Externally publishedYes

Keywords

  • Catecholamines, adrenaline, noradrenaline
  • Muscle Relaxants, rocuronium, vecuronium, responses, haemodynamic

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

Fingerprint Dive into the research topics of 'Changes in plasma catecholamine concentrations and haemodynamic effects of rocuronium and vecuronium in elderly patients'. Together they form a unique fingerprint.

  • Cite this