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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-24308

Mauch, J; Kutter, A P N; Madjdpour, C; Koepfer, N; Frotzler, A; Bettschart-Wolfensberger, R; Weiss, M (2010). Electrocardiographic alterations during intravascular application of three different test doses of bupivacaine and epinephrine: experimental study in neonatal pigs. British Journal of Anaesthesia, 104(1):94-97.

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Abstract

BACKGROUND: Origin of electrocardiographic (ECG) alterations during intravascular injection of local anaesthetic solutions is controversial. The aim of this study was to elucidate whether epinephrine, bupivacaine or their combination is responsible for ECG alteration. METHODS: Forty-five piglets were randomized into three groups. After induction of general anaesthesia using sevoflurane and peripheral venous cannulation, the trachea was intubated, the lungs were artificially ventilated, and anaesthesia was maintained by sevoflurane. Under steady state 0.2 ml kg(-1) and after 10 min 0.4 ml kg(-1) of one of the following three test solutions was administered i.v.: bupivacaine 0.125% (Group 1), bupivacaine 0.125%+epinephrine 1:200 000 (Group 2), and plain epinephrine 1:200,000 (Group 3). The ECG was analysed for alterations in heart rate and T-elevation. RESULTS: After injection of 0.2 or 0.4 ml kg(-1) test solution, an increase in heart rate of at least 10% was found in none of Group 1 and in all of Groups 2 and 3. After application of 0.2 ml kg(-1) test solution, T-elevation was found in 7% of Group 1 and in 93% of Groups 2 and 3. The injection of 0.4 ml kg(-1) revealed a T-elevation in 27%, 100%, and 100%, respectively, in Groups 1, 2, and 3. CONCLUSIONS: This animal model demonstrated that increases in heart rate and T-elevation in the ECG during i.v. application of a common test dose (0.2 ml kg(-1)) of bupivacaine are caused by epinephrine addition. Whether higher doses of bupivacaine alone can cause similar ECG changes or not requires further studies.

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Institute of Anesthesiology
04 Faculty of Medicine > University Children's Hospital Zurich > Clinic for Surgery
05 Vetsuisse Faculty > Veterinary Clinic > Equine Department > Equine Clinic
DDC:570 Life sciences; biology
610 Medicine & health
630 Agriculture
Language:English
Date:14 November 2010
Deposited On:09 Dec 2009 16:40
Last Modified:27 Nov 2013 23:28
Publisher:Oxford University Press
ISSN:0007-0912
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:10.1093/bja/aep313
PubMed ID:19915187
Citations:Web of Science®. Times Cited: 13
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