A tether system for cardiovascular studies with the behaving micropig

D. E. Anderson, M. D. Crowell, A. W. French

Research output: Contribution to journalArticle

Abstract

A tether system has been developed for continuous monitoring of blood pressure in the micropig. The micropig is a suitable model for blood-pressure research because of the similarity of its cardiovascular system to that of humans and because of its sensitivity to high sodium intake. The system consists of a metal boom, attached via a universal joint to a wall 6 ft above floor level, that extends horizontally to the center of the enclosure. A fluid and electronic swivel affixed to the boom is connected to a flexible, hollow, metal tether that descends to a vest worn by the micropig. The vest contains a pressure transducer to which an indwelling arterial catheter is connected via a stopcock. The transducer cable and an infusion line ascend through the interior of the tether to the swivel. The system remains in equilibrium through a system of pulleys and counterweights. Continuous, 24-h recording shows a diurnal variation characterized by higher heart rate but lower blood pressure during the day than at night. The system has been found to be effective for continuous studies over intervals of a month or more.

Original languageEnglish (US)
Pages (from-to)44-48
Number of pages5
JournalBehavior Research Methods, Instruments, & Computers
Volume24
Issue number1
DOIs
StatePublished - Mar 1992
Externally publishedYes

Fingerprint

Cardiovascular System
Blood Pressure
Metals
Pressure Transducers
Indwelling Catheters
Transducers
Joints
Heart Rate
Sodium
Research

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Psychology (miscellaneous)

Cite this

A tether system for cardiovascular studies with the behaving micropig. / Anderson, D. E.; Crowell, M. D.; French, A. W.

In: Behavior Research Methods, Instruments, & Computers, Vol. 24, No. 1, 03.1992, p. 44-48.

Research output: Contribution to journalArticle

Anderson, D. E. ; Crowell, M. D. ; French, A. W. / A tether system for cardiovascular studies with the behaving micropig. In: Behavior Research Methods, Instruments, & Computers. 1992 ; Vol. 24, No. 1. pp. 44-48.
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