title: Central blood pressure estimation by using N-point moving average method in the brachial pulse wave.
abstract: Recently, a method of estimating the central systolic blood pressure (C-SBP) using an N-point moving average method in the radial or brachial artery waveform has been reported. Then, we investigated the relationship between the C-SBP estimated from the brachial artery pressure waveform using the N-point moving average method and the C-SBP measured invasively using a catheter. C-SBP using a N/6 moving average method from the scaled right brachial artery pressure waveforms using VaSera VS-1500 was calculated. This estimated C-SBP was compared with the invasively measured C-SBP within a few minutes. In 41 patients who underwent cardiac catheterization (mean age: 65 years), invasively measured C-SBP was significantly lower than right cuff-based brachial BP (138.2 ± 26.3 vs 141.0 ± 24.9 mm Hg, difference -2.78 ± 1.36 mm Hg, P = 0.048). The cuff-based SBP was significantly higher than invasive measured C-SBP in subjects with younger than 60 years old. However, the estimated C-SBP using a N/6 moving average method from the scaled right brachial artery pressure waveforms and the invasively measured C-SBP did not significantly differ (137.8 ± 24.2 vs 138.2 ± 26.3 mm Hg, difference -0.49 ± 1.39, P = 0.73). N/6-point moving average method using the non-invasively acquired brachial artery waveform calibrated by the cuff-based brachial SBP was an accurate, convenient and useful method for estimating C-SBP. Thus, C-SBP can be estimated simply by applying a regular arm cuff, which is greatly feasible in the practical medicine.
authors.affiliation: Department of Cardiology and Nephrology, Dokkyo Medical University, Mibu, Tochigi, Japan.
authors.forename: Rie
authors.initials: R
authors.lastname: Sugawara
authors.affiliation: Department of Cardiology and Nephrology, Dokkyo Medical University, Mibu, Tochigi, Japan.
authors.forename: Shigeo
authors.initials: S
authors.lastname: Horinaka
authors.affiliation: Department of Cardiology and Nephrology, Dokkyo Medical University, Mibu, Tochigi, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yagi
authors.affiliation: Department of Cardiology and Nephrology, Dokkyo Medical University, Mibu, Tochigi, Japan.
authors.forename: Kimihiko
authors.initials: K
authors.lastname: Ishimura
authors.affiliation: Department of Cardiology and Nephrology, Dokkyo Medical University, Mibu, Tochigi, Japan.
authors.forename: Takeharu
authors.initials: T
authors.lastname: Honda
mesh_terms: D000368:Aged; D001794:Blood Pressure / Q000502:physiology*; D001795:Blood Pressure Determination / Q000295:instrumentation / Q000379:methods*; D015924:Blood Pressure Monitors; D001916:Brachial Artery / Q000502:physiology; D006328:Cardiac Catheterization; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D063177:Pulse Wave Analysis / Q000379:methods*