Abstract 284: A Pilot Study Comparing Two Ambulatory Blood Pressure Monitors Worn at the Same Time

Hypertension ◽  
2012 ◽  
Vol 60 (suppl_1) ◽  
Author(s):  
Radhakrishna R Kallem ◽  
Kevin Meyers ◽  
Deirdre Sawinski ◽  
Raymond R Townsend
Keyword(s):  
Blood Pressure ◽  
Ambulatory Blood Pressure ◽  
Diastolic Pressure ◽  
Blood Pressure Monitoring ◽  
Demographic Data ◽  
Systolic Pressure ◽  
University Of Pennsylvania ◽  
Public Health Importance ◽  
Blood Pressures ◽  
The University

Introduction Ambulatory blood pressure monitoring (ABPM) has been proposed as the most effective way to characterize a person’s BP profile. However, there are very limited data in the literature comparing two simultaneously worn ABPM devices. Therefore, we compared an eight hour daytime simultaneous ABPM using two monitors (Mobil-O-Graph [I.E.M., Stolberg, Germany] and Spacelabs 90207 [Spacelabs Medical, Issequah, WA]). Methods Simultaneous BP and heart rate data were measured on 13 adult volunteers at the University of Pennsylvania using the two monitors over an 8 hour period. Other demographic data were also collected. Standard seated BPs were obtained in triplicate at the beginning and end of the 8 hour monitoring period using an Accutor (Datascope, Mahwah, NJ) device. Three blood pressures were obtained at 1 minute intervals, recorded and averaged for each arm using the Accutor device. Results The data show high concordance of measured mean arterial pressures (Mobil-O-Graph 101.4 [SEM-2.0] mmHg, Spacelabs 100.6 [SEM-2.4] mmHg) and heart rates (Mobil-O-Graph measuring 82.4 [ SEM- 4.1] beats/minute, Spacelabs 81.7 [4.0] beats/minute) between the monitors. Spacelabs measured a 10 mmHg higher systolic pressure (p=0.0016) and a non-statistically significant, but numerically higher (2.8 mmHg) diastolic pressure (Figure 1). Conclusion The systolic BP difference between the two devices has public health importance. These differences if confirmed in larger cohorts, ABPM manufacturers should consider developing a normative database to help practitioners interpret ABPM data obtained with their device.

INDIRECT ESTIMATION OF SYSTOLIC AND DIASTOLIC BLOOD PRESSURE IN THE NEWBORN

PEDIATRICS ◽  
1972 ◽  
Vol 50 (3) ◽  
pp. 387-394
Author(s):  
Colin H. M. Walker ◽  
Phillip J. West ◽  
Sanford L. Simons ◽  
Anthony R. Whytock
Keyword(s):  
Blood Pressure ◽  
Diastolic Pressure ◽  
Blood Pressure Monitoring ◽  
Systolic Pressure ◽  
Correlation Coefficients ◽  
Mean Value ◽  
Arithmetic Mean ◽  
Pressure Monitoring ◽  
Blood Pressures ◽  
The Mean

An impedance plethysmographic method for measuring systolic and diastolic blood pressures in small infants using standard electro-cardiogram recorders has been studied. The overall 95% confidence limit of the mean of five estimations was found to be ±3.74 mm Hg for the systolic and ±3.72 mm Hg for the diastolic value. Comparing this method with intra-arterial measurements gave correlation coefficients (r) of 0.95 (bias 10.09 mm Hg) for systolic pressure and 0.89 (Bias 10.09 mm Hg) for diastolic pressure. Values for the comparison with auscultation were 0.98 (bias 19.29 mm Hg) systolic and 0.86 (bias 10.17 mm Hg) diastolic, and for the comparison of the arithmetic mean value with the flush method 0.84 (bias 30.17 mm Hg). These results reveal a good correlation with the intra-arterial measurements and indicate that this technique can be used for the periodic or continuous blood pressure monitoring of infants.

Indirect blood pressure determination by Doppler technique in renal hypertensive cats

1979 ◽  
Vol 237 (6) ◽  
pp. H720-H723 ◽  
Author(s):  
L. R. Klevans ◽  
G. Hirkaler ◽  
J. L. Kovacs
Keyword(s):  
Blood Pressure ◽  
Diastolic Pressure ◽  
Systolic Pressure ◽  
Pressure Measurements ◽  
Blood Pressure Determination ◽  
Monitoring Period ◽  
Direct Pressure ◽  
Blood Pressures ◽  
Pressure Changes ◽  
Indirect Blood Pressure

The Doppler ultrasonic recording technique was used to measure systolic and diastolic blood pressures indirectly in renal hypertensive cats. The accuracy of the method was evaluated by comparing indirect blood pressures from one leg of a cat with direct pressure measurements from the other leg. A linear relationship existed between indirect and direct systolic and diastolic pressures. The consistency of the method was assessed by measuring blood pressure during a 5-h monitoring period in normotensive and renal hypertensive cats. No significant variation occurred over this period. The sensitivity of the method to blood pressure changes was determined also. A significant reduction in systolic and diastolic pressure induced by hydralazine, 10 mg/kg po, was recorded during a 5-h monitoring period. The development of renovascular hypertension was followed for approximately 70 days. Systolic pressure rose in a logarithmic fashion from 160 to a maximum of 240 mmHg. It was concluded that the Doppler ultrasonic technique is a simple and reliable method for recording indirect blood pressure acutely and chronically in conscious unrestrained cats.

Ambulatory blood pressure monitoring and peri-hemodialysis blood pressures in a southeast US hemodialysis unit

2012 ◽  
Vol 77 (05) ◽  
pp. 383-391 ◽  
Author(s):  
Tibor Fülöp ◽  
Darren W. Schmidt ◽  
Adrian Cosmin ◽  
Nahid Islam ◽  
Catherine Wells ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Ambulatory Blood Pressure Monitoring ◽  
Ambulatory Blood Pressure ◽  
Blood Pressure Monitoring ◽  
Pressure Monitoring ◽  
Hemodialysis Unit ◽  
Blood Pressures ◽  
Southeast Us

Semiautomatic blood pressure monitor utilizing an electronic sphygmomanometer

1977 ◽  
Vol 43 (2) ◽  
pp. 379-381 ◽  
Author(s):  
R. Winn ◽  
J. R. Hildebrandt ◽  
J. Hildebrandt
Keyword(s):  
Blood Pressure ◽  
Diastolic Pressure ◽  
Cuff Pressure ◽  
Blood Pressure Monitoring ◽  
Systolic Pressure ◽  
Blood Pressure Monitor ◽  
Noninvasive Blood Pressure ◽  
Pressure Monitor ◽  
Korotkoff Sound ◽  
Steady Rate

A semicontinuous but noninvasive blood pressure monitoring system is described. It consists of a commercial electronic sphygmomanometer which utilizes a microphone under an occluding arm cuff to detect the Korotkoff sounds, a pressure transducer, and a simple gating circuit. The gate passes the cuff pressure signal to a recorder only when a proper Korotkoff sound is detected. The cuff is rapidly inflated to just above the anticipated systolic pressure, then deflated at a steady rate of 2–6 Torr/heartbeat. When diastolic pressure is passed, the cuff is fully deflated momentarily before repeating the cycle. Systolic and diastolic pressures can be recorded up to 3 or 4 times/min. Spurious signals are rejected by the electronics which process the output of the microphone. This allows the use of the system in experiments on exercising man and in environments where unwanted signals exist. The system offers greater versatility than commercial semiautomatic pressure monitors, at less than half the cost.

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