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Comparative cardiovascular effects of four fishery anesthetics in spinally transected rainbow trout, Oncorhynchus mykiss

Comparative Biochemistry and Physiology, C

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Abstract

1. We compared the effects of four anesthetics on heart rate, dorsal and ventral aortic blood pressure, and electrocardiograms of rainbow trout (Oncorhynchus mykiss). 1. Exposure to the local anesthetics tricaine methanesulfonate (MS-222) and benzocaine hydrochloride (BZH) produced minimal cardiovascular alterations. Mean dorsal aortic pressure (DAP) decreased during exposure to MS-222, and mean DAP and mean ventral aortic pressure (VAP) increased 15% during recovery from BZH. 3. Exposure to the general anesthetic 2-phenoxyethanol (2-PE) or the hypnotic agent etomidate (ET) dramatically decreased heart rate and blood pressures and altered EKG patterns. 4. During recovery, VAP and DAP increased above baseline for an extended period. Heart rate and EKG patterns rapidly returned to normal.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Comparative cardiovascular effects of four fishery anesthetics in spinally transected rainbow trout, Oncorhynchus mykiss
Series title:
Comparative Biochemistry and Physiology, C
Volume
104C
Issue:
3
Year Published:
1993
Language:
English
Contributing office(s):
Upper Midwest Environmental Sciences Center
Description:
pp. 477-483
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Comparative Biochemistry and Physiology, C
First page:
477
Last page:
483
Number of Pages:
7