Ambulatory Blood Pressure Monitoring: How Reproducible Is It (original) (raw)
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Reproducibility of ambulatory blood pressure changes from the initial values on two different days
Clinics (São Paulo, Brazil), 2013
We tested the reproducibility of changes in the ambulatory blood pressure (BP) from the initial values, an indicator of BP reactivity and cardiovascular health outcomes, in young, healthy adults. The subjects wore an ambulatory BP monitor attached by the same investigator at the same time of day until the next morning on two different days (day 1 and day 2) separated by a week. We compared the ambulatory BP change from the initial values at hourly intervals over 24 waking and sleeping hours on days 1 and 2 using linear regression and repeated measures analysis of covariance. The subjects comprised 88 men and 57 women (mean age±SE 22.4±0.3 years) with normal BP (118.3±0.9/69.7±0.6 mmHg). For the total sample, the correlation between the ambulatory BP change on day 1 vs. day 2 over 24, waking, and sleeping hours ranged from 0.37-0.61; among women, the correlation was 0.38-0.71, and among men, it was 0.24-0.52. Among women, the ambulatory systolic/diastolic BP change was greater by 3.1...
PubMed, 2003
Ambulatory blood pressure monitoring (ABPM) devices are increasingly being used in the assessment of hypertension. The purpose of the study was to investigate patient's diurnal BP variation and to further determine the differences of BP readings between male and female patients and the effects of age in patients who attended the clinic with essential hypertension. In addition, evidence of relationship between the parameters recorded by 24-hour ABPM was also investigated. This study was conducted in an outpatient specialist clinic. Two indices were used to demonstrate the diurnal BP variation. Firstly, the diurnal systolic blood pressure (SBP) and diastolic blood pressure (DBP) variations which were calculated as night/day BP ratio for SBP and DBP respectively. Anyone scoring less than 100% were categorised as dippers. Secondly, nocturnal falls in SBP and DBP were calculated as (awake SBP-sleep SBP)/awake SBP x 100 and (awake DBP-sleep DBP)/awake DBP x 100 respectively. The results showed that there was no significant difference in the mean BP between male and female patients. In general, the study sample were categorised as dippers and non dippers. There were more male dippers than female dippers. Finally correlation analysis revealed that age is related to SBP variables whilst night HR showed positive correlation with night time BP. It is concluded that ABPM was shown to be a useful tool to analyse the variation and prevalence of cardiovascular risk markers in hypertensive patients and can easily be done in an outpatient set-up.
American journal of hypertension, 2020
BACKGROUND The U.S. Preventive Services Task Force recommends the use of 24-hour ambulatory blood pressure monitoring (ABPM) as part of screening and diagnosis of hypertension. The optimal ABPM device for population-based surveys is unknown. OBJECTIVE Among three ABPM devices, we compared the proportion of valid BP readings, mean awake and asleep BP readings, differences between awake ABPM readings and initial standardized BP readings, and sleep experience. RESULTS The proportions of valid blood pressure readings were not different among the three devices ( p > 0.45). Mean awake and asleep systolic BP were significantly higher for STO device (WA vs. STO vs. SL: 126.65 mmHg, 138.09 mmHg, 127.44 mmHg; 114.34 mmHg, 120.34 mmHg, 113.13 mmHg; p <0.0001 for both). The difference between the initial average standardized mercury systolic BP readings and the ABPM mean awake systolic BP was larger for STO device (WA vs. STO. vs. SL: -5.26 mmHg, -16.24 mmHg, -5.36 mmHg; p <0.0001); di...
Comparisons of home and daytime ambulatory blood pressure measurements
BMC cardiovascular disorders, 2014
Home (HBPM) and ambulatory (ABPM) blood pressure measurements have their advantages and disadvantages in diagnosing and managing hypertension. We studied HBPMs and ABPMs in volunteers taking part in a survey. Of 366 respondents, 270 provided a total of 5997 triplicate HBPMs (Part 1); 175 also provided data on ABPMs, of which the measurements obtained between 6 am and 10 pm were used in this study (Part 2). Part 1, When all 5997 triplicate HPPMs were considered, 1st readings tended to be significantly higher than those of the 2nd and 3rd for both, systolic and diastolic pressures, but when the consideration was restricted to the very first triplicate of each of the 270 subjects, this was true only for systolic HBPM. Part 2, The ABPMs tended to have a wider range than the corresponding HBPMs, and to be distributed towards higher values. Of the non-parametric indices of (ABPM - corresponding HBPM), (First Quartile, Median, Third Quartile and Maximim) all but the minima had positive val...
24-Hour ambulatory blood pressure monitoring
American Heart Journal, 2006
This paper reviews technical, methodological and clinical aspects of ambulatory blood pressure (aBP) monitoring. It describes deficits in the evaluation of available aBP devices and in the description and interpretation of slow (e.g. seasonal or circadian) and fast blood pressure variations. The ongoing discussion about the mere existence of circadian blood pressure rhythms is reflected, referring to the most recent data. Further methodological questions considered encompass the problem of centrality (how to describe an aBP profile with one numerical measure) and the question of variability (how to describe variance within an aBP profile). Good reasons for the use of MESOR or RMSSD parameters are given. Finally, the evidence behind a broad clinical application of aBP measurements is critically reviewed; except for 'white coat' hypertension, the clinical superiority of aBP values compared with office and home blood pressure readings is not well established on epidemiological grounds.
AMBULATORY BLOOD PRESSURE MONITORING IN INTREATED HYPERTENSIVES: WHAT ARE THE TARGET PARAMETERS
2017
Ambulatory blood pressure monitoring (ABPM) as out-of-office method of evaluation blood pressure (BP) is recommended in guidelines for the practical clinical use of the diagnosis and management of hypertension. However, there is poor information about the algorithm of ABPM analysis strategy in treated cohort individuals. To this purpose, we analyzed 150 ABPM records in hypertensive individuals with essential hypertension. We have selected ABPM data in 150 patients conducted ABPM with a bifunctional recorder (Incart, S.-P., RF) using an oscillometric method. For analyzing matter, we defined awake and asleep periods as the fixed periods of time (from 9:00 AM to 9:00 PM as day time and from 01:00 to 06:00 AM as a nighttime period). We have also calculated BP averages for systolic BP (SBP), diastolic BP (DBP) and pulse pressure (PP) for 24-h, day and nighttime periods. Moreover, we calculated sleep-through morning surge as the average morning SBP minus moving lowest nocturnal SBP [5], a dipping status and SBPnight variability. Results. The age of participants was 61 (10,4) yrs, 54 % was male. We found average SBPday < 135 mmHg and/or average DBPday< 85 mmHg in 53 cases. In that subgroup SBPnight variability < 12.2 mmHg, average PBP24 < 53 mmHg, sleep-through morning surge < 37mmHg and a dipping status was found in 11 cases. Conclusion. In this retrospective study 35 % of hypertensive subjects achieve target level of ABPM component basis on a day-time BP and only 7 % of subjects in the same hypertensive population reach target level of five ambulatory BP parameters as pulse presse, morning surge, dipping status and SBP variability in night period.