Document Detail


Comparison of simultaneous measurement of mouse systolic arterial blood pressure by radiotelemetry and tail-cuff methods.
MedLine Citation:
PMID:  14962829     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Radiotelemetry of mouse blood pressure accurately monitors systolic pressure, diastolic pressure, heart rate, and locomotor activity but requires surgical implantation. Noninvasive measurements of indirect systolic blood pressure have long been available for larger rodents and now are being reported more frequently for mice. This study compared mouse systolic arterial blood pressure measurements using implanted radiotelemetry pressure transducer with simultaneous tail-cuff measurements in the same unanesthetized mice. The pressure range for comparison was extended by inducing experimental hypertension or by observations of circadian elevations between 3 AM and 6 AM. Both trained and untrained tail-cuff operators used both instruments. Every effort was made to follow recommended manufacturer's instructions. With the initial flow-based tail-cuff instrument, we made 671 comparisons (89 sessions) and found the slope of the linear regression to be 0.118, suggesting poor agreement. In an independent assessment, 277 comparisons (35 sessions) of radiotelemetry measurements with the pulse based tail-cuff instrument were made. The slope of the linear regression of the simultaneous measurements of systolic pressures was 0.98, suggesting agreement. Bland-Altman analysis also supported our interpretation of the linear regression. Thus although reliable systolic pressure measurements are possible with either tail-cuff or radiotelemetry techniques, in our hands some tail-cuff instruments fail to accurately detect elevated blood pressures. These data, however, do not distinguish whether this instrument-specific tail-cuff failure was due to operator or instrument inadequacies. We strongly advise investigators to obtain an independent and simultaneous validation of tail-cuff determinations of mouse blood pressure before making critical genotyping determinations.
Authors:
Steven E Whitesall; Janet B Hoff; Alan P Vollmer; Louis G D'Alecy
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.     Date:  2004-02-12
Journal Detail:
Title:  American journal of physiology. Heart and circulatory physiology     Volume:  286     ISSN:  0363-6135     ISO Abbreviation:  Am. J. Physiol. Heart Circ. Physiol.     Publication Date:  2004 Jun 
Date Detail:
Created Date:  2004-05-18     Completed Date:  2004-06-28     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  100901228     Medline TA:  Am J Physiol Heart Circ Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  H2408-15     Citation Subset:  IM    
Affiliation:
Dept. of Molecular and Integrative Physiology, University of Michigan, 7708 Medical Sciences Bldg. II, Ann Arbor, MI 48109-0622, USA.
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Pressure / physiology*
Blood Pressure Determination / instrumentation,  methods*
Heart Rate / physiology
Male
Mice
Mice, Inbred C57BL
Motor Activity
Restraint, Physical
Systole / physiology*
Tail / blood supply
Telemetry / instrumentation,  methods*
Transducers
Grant Support
ID/Acronym/Agency:
5P01 HL 18575-24/HL/NHLBI NIH HHS; R01 HL 71016/HL/NHLBI NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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