Characterization of the oscillometric method for measuring indirect blood pressure
- 881 Downloads
In this study, human subjects and dogs were used to determine the ability of the oscillometric method to indicate systolic and diastolic pressure. In the human studies, the auscultatory method was used as the reference. In the animal studies, directly recorded blood pressure was used as the reference. The ability of the sudden increase in cuff pressure oscillations during cuff deflation to indicate systolic pressure was examined and found to overestimate systolic pressure slightly in man, but more in animals. Systolic pressure was encountered when the cuff pressure oscillations were about one half of their maximum amplitude. However, in both man and animals the ratio was not constant; although the range was less in man than in animals. Diastolic pressure was encountered when cuff-pressure oscillation amplitude was about 0.8 of the maximal amplutide. This ratio for diastolic pressure was not constant over a range of diastolic pressure. The range of variability was less for man than for the dog.
KeywordsBlood pressure Oscillometric method Hypertension Accuracy Systolic blood pressure Diastolic blood pressure
Unable to display preview. Download preview PDF.
- 1.American Heart Association. Recommendation for human blood pressure determinations.Circulation 4:503–509, 1951; and American Heart Association, Dallas, Texas, 1980.Google Scholar
- 2.Geddes, L.A., V. Chaffee, S.W. Whistler, J.D. Bourland, and W.A. Tacker. Indirect mean blood pressure on the anesthetized pony.Am. J. Vet. Res. 28:2055–2057, 1977.Google Scholar
- 3.Geddes, L.A., W. Combs, W. Denton, S.J. Whistler, and J.D. Bourland. Indirect mean blood pressure in the dog.Am. J. Physiol. (Heart & Circulation) 7:H663-H666, 1980.Google Scholar
- 7.Hamilton, W.F., R.A. Woodbury, and R.A. Harper. Physiologic relationships between intrathoracic, intraspinal and arterial pressure.J. Am. Med. Assoc. 107:853–856, 1936.Google Scholar
- 9.Mauck, G.R., C. Smith, L.A. Geddes, and J.D. Bourland. The meaning of the point of maximum oscillations in cuff pressure in the indirect measurement of blood pressure II.ASME Trans. Ser. K J. Biomech. Eng. 102:28–33, 1980.Google Scholar
- 10.Posey, J.A., L.A. Geddes, H. Williams, and A.G. Moore. The meaning of the point of maximum oscillations in cuff pressure in the indirect measurement of blood pressure. Part 1.Cardiovascular Res. Cent. Bull. 8(1):15–25, 1969.Google Scholar
- 11.Ramsey, M. Noninvasive automatic determination of mean arterial pressure.Med. Biol. Eng. Comput. 17:17–18, 1979.Google Scholar
- 12.Steele, J.M. Comparison of simultaneous indirect (auscultatory) and direct (intra-arterial) measurements of arterial pressure in man.J. Mt. Sinai Hosp. 8:1042–1050, 1941.Google Scholar