Comparison of auscultatory and oscillometric blood pressures

Arch Pediatr Adolesc Med. 2001 Jan;155(1):50-3. doi: 10.1001/archpedi.155.1.50.


Objective: To study the differences in blood pressure readings between the auscultatory and oscillometric (Dinamap model 8100; Critikon, Tampa, Fla) methods.

Design: Survey of 2 blood pressure instruments.

Setting: Public schools.

Participants: Seven thousand two hundred eight schoolchildren aged 5 through 17 years.

Main outcome measure: Blood pressure levels.

Results: For all children combined, Dinamap systolic pressure readings were 10 mm Hg higher (95% confidence interval, -4 to 24 mm Hg) than the auscultatory systolic pressure readings. Dinamap diastolic pressure readings were 5 mm Hg higher (95% confidence interval, -14 to 23 mm Hg) than the auscultatory Korotkoff phase V diastolic pressure readings.

Conclusion: These findings preclude the interchange of readings by the 2 methods. Caution must be exercised in the diagnosis of hypertension when an automated device is used.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.
  • Validation Study

MeSH terms

  • Adolescent
  • Auscultation / instrumentation*
  • Auscultation / standards*
  • Bias
  • Blood Pressure Determination / instrumentation*
  • Blood Pressure Determination / methods
  • Blood Pressure Determination / standards*
  • Child
  • Child, Preschool
  • Confidence Intervals
  • Diastole
  • Female
  • Humans
  • Hypertension / diagnosis*
  • Male
  • Oscillometry / instrumentation*
  • Oscillometry / standards*
  • Systole