Document Detail

Diagnostic performance of P wave duration in the identification of left atrial enlargement in dogs.
MedLine Citation:
PMID:  22512699     Owner:  NLM     Status:  Publisher    
Objectives: To determine sensitivity and specificity of P wave duration in the identification of left atrial enlargement in dogs. Methods: Electrocardiograms from normal dogs and dogs with various cardiovascular diseases were evaluated. Inclusion criteria were the availability of an electrocardiogram showing a stable isoelectric line, easily recognizable P waves and good quality two-dimensional echocardiographic estimate of left atrial dimensions using the left atrial to aortic root ratio. Using a metal caliper system, P wave duration was measured to the nearest 10 milliseconds for six consecutive heart beats; data were then averaged for each dog. The accuracy of P wave duration in predicting left atrial enlargement was determined using a receiver operating characteristic analysis. Results: One hundred and fifty-six dogs were included in the study. Average P wave durations of 20, 30, 40 and 50 milliseconds yielded sensitivities of 100, 85, 68 and 40% and specificities of 0, 16, 64 and 93%, respectively, for the diagnosis of Left Atrial Enlargement by echocardiography. The estimated area under curve of the receiver operating characteristic curve was 0·70 (95% confidence interval: 0·60 to 0·80). Clinical Significance: The diagnostic performance of P wave duration for identification of left atrial enlargement in dogs presents considerable limitations.
P Savarino; M Borgarelli; A Tarducci; S Crosara; N M Bello; M L Margiocco
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-18
Journal Detail:
Title:  The Journal of small animal practice     Volume:  -     ISSN:  1748-5827     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0165053     Medline TA:  J Small Anim Pract     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 British Small Animal Veterinary Association.
Department of Animal Pathology, Faculty of Veterinary Medicine, University of Torino, via Leonardo da Vinci 44, 10095 Grugliasco (TO), Italy Department of Clinical Sciences, Kansas State University, College of Veterinary Medicine, Manhattan, KS 66506, USA Department of Statistics, Kansas State University, Manhattan, KS 66506, USA Canada West Veterinary Specialists, Vancouver, BC V5M 4Y3, Canada.
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