title: Systolic arterial blood pressure estimated by mitral regurgitation velocity, high definition oscillometry, and Doppler ultrasonography in dogs with naturally occurring degenerative mitral valve disease.
abstract: BACKGROUND
  To determine if systolic blood pressure estimated by mitral regurgitation (MR) velocity can be used interchangeably with that estimated by high definition oscillometry (HDO) and Doppler ultrasonography (DU) in dogs with naturally occurring mitral valve disease (MVD).
  
  
  METHODS
  Forty-nine client-owned dogs with naturally occurring MVD.
  
  
  METHODS
  This is a retrospective study. Medical records were reviewed and dogs with MR caused by degenerative MVD were included if systolic blood pressure was estimated from MR velocity determined by continuous wave Doppler (CW), DU and HDO at the same visit. A Pearson product moment correlation coefficient was determined for each combination of measures and tested for significance with a paired t-test. Limits of agreement between 2 measures were determined by the 95% confidence interval of the average difference of the means and illustrated by Bland-Altman plots.
  
  
  RESULTS
  Systolic pressure estimated from CW was significantly but only moderately correlated to DU (r = 0.42, p=0.0015) and HDO (r = 0.40, p=0.0021). Pressure estimated from DU was significantly but only moderately correlated to HDO (r = 0.57, p≤0.0001). Limits of agreement were wide for all measures including DU and CW (-61.9to 44.6 mmHg), HDO and CW (-65.2to 26.9 mmHg), and HDO and DU (-63.1 to 42.06 mmHg).
  
  
  CONCLUSIONS
  Systolic blood pressure estimated by CW cannot be used interchangeably with HDO or DU in dogs with naturally occurring MVD.
authors.affiliation: Department of Veterinary Clinical Sciences, Oklahoma State University, 2065 W. Farm Rd., Stillwater, OK, 74078, United States. Electronic address: andrew.hanzlicek@okstate.edu.
authors.forename: A S
authors.initials: AS
authors.lastname: Hanzlicek
authors.affiliation: Department of Veterinary Clinical Sciences, Oklahoma State University, 2065 W. Farm Rd., Stillwater, OK, 74078, United States.
authors.forename: R D
authors.initials: RD
authors.lastname: Baumwart
authors.affiliation: Department of Statistics, Oklahoma State University, 301 MSCS, Stillwater, OK, 74078, United States.
authors.forename: M E
authors.initials: ME
authors.lastname: Payton
mesh_terms: D000818:Animals; D001795:Blood Pressure Determination / Q000379:methods / Q000662:veterinary*; D004283:Dog Diseases / Q000503:physiopathology*; D004285:Dogs; D004452:Echocardiography / Q000662:veterinary; D008944:Mitral Valve Insufficiency / Q000662:veterinary*; D009991:Oscillometry / Q000662:veterinary*; D018608:Ultrasonography, Doppler / Q000662:veterinary*
keywords: Cardiac; Hypertension; Hypotension; Valvular degeneration