Ambulatory Blood Pressure Monitoring: How Reproducible Is It?

Musso, Natale R.; Vergassola, C.; Barone, Concetta; Lotti, G

doi:10.1016/s0895-7061(97)00126-x

Cited by 38 publications

(23 citation statements)

References 18 publications

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“…Previously, similar data have been reported in healthy normotensive adults as well as in untreated and treated patients with arterial hypertension [32,[35][36][37][38][39][40][41][42]. In accordance with our results, many studies have shown that ambulatory BP values are more reproducible than office BP values [13,[43][44][45][46].…”

Section: Discussionsupporting

confidence: 92%

Reproducibility of ambulatory blood pressure measurement in patients with coronary heart disease

2014

Cardiovasc Med

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SummaryAmbulatory blood pressure monitoring (ABPM) is a useful tool to establish the diagnosis of hypertension as well as for the monitoring of the response to antihypertensive therapy. We aimed to assess the reproducibility of the circadian blood pressure (BP) pattern (24 h, daytime and night-time BP and heart rate HR), the categorisation of individuals as dippers and non-dippers and the morning BP peak in three consecutive ABPM recordings obtained in patients with coronary artery disease.Methods: We performed a retrospective analysis of the reproducibility of 3 repeated ABPM obtained in 49 patients with coronary artery disease (age: 61.4 ± 7.9 years, 41 males, 36 hypertensives) enrolled in two previous studies using Tracker NIBP2 devices (Delmar, Del Mar Reynolds Medical, Hertford, UK). The standard interval of measurement was 20 minutes during the day and 45 minutes at night. The patients underwent ABPM on three separate days at intervals two to six weeks apart, on a typical week day with normal daily activity. All patients had a history of coronary artery disease and stable cardiovascular medication during the period of the three measurements.Results: Using analysis of variance for repeated measurement (ANOVA, Pillai's trace test) and by Pearson's correlation coefficient there was no significant variance in 24-hour, day and night BP and HR as well as morning BP peak. The categorisation of the subjects as dippers and non-dippers was also highly reproducible (p = 0.852; ns).Conclusions: Our data confirm that in patients with coronary artery disease the 24-hour recording of the circadian blood pressure patterns using Tracker NIBP2 devices is highly reproducible.

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Section: Discussionsupporting

confidence: 92%

Reproducibility of ambulatory blood pressure measurement in patients with coronary heart disease

2014

Cardiovasc Med

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“…Tolerability of the technique has been discussed as a possible limitation, mostly because ABPM could induce modest sleep disturbances. 36 Moreover, there seems to be low individual reproducibility of the circadian profile in BP by repeated ABPM performed on the same patients, 37 although results again show clear advantages of ABPM over office values in terms of reproducibility. 38 Some investigators have attempted to extrapolate the advantages of ABPM in general practice to the diagnosis of hypertension in pregnancy.…”

Section: Discussionmentioning

confidence: 98%

Sampling Requirements for Ambulatory Blood Pressure Monitoring in the Diagnosis of Hypertension in Pregnancy

Hermida

Ayala

2003

Hypertension

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Abstract-Previous studies on ambulatory blood pressure monitoring as a potential screening test for hypertension in pregnancy have not carefully considered sampling requirements. We have examined the impact of duration and frequency of blood pressure sampling in the reproducibility of mean values in pregnancy. We analyzed 2430 blood pressure series sampled every 20 minutes during the day and every 30 minutes at night for 48 hours every 4 weeks from the first obstetric visit until delivery in 235 normotensive and 168 hypertensive pregnant women. Blood pressure series were decimated to generate shorter series with data sampled every 1, 2, 3, or 4 hours for 48 hours, as well as at the original rate for the first day. Reproducibility of mean blood pressure as well as sensitivity and specificity in the diagnosis of hypertension were compared between the original and the decimated series. Sensitivity and specificity of the 24-hour blood pressure mean are similar for the values calculated from the original series and for those obtained from shorter profiles up to data sampled every 3 hours but reduced by 5% to 12% when diagnosis is based on data sampled at 20-to 30-minute intervals for the first 24 hours. Results also indicate that the 24-hour blood pressure mean is better reproduced with data sampled at 3-hour intervals for 48 hours than by data sampled at 20-to 30-minute intervals for 1 day only. This study demonstrates that reproducibility of mean blood pressure values is more dependent on duration of sampling than on sampling rate. Key Words: blood pressure Ⅲ pregnancy Ⅲ hypertension, pregnancy Ⅲ preeclampsia Ⅲ blood pressure monitoring, ambulatory P regnancies complicated by hypertension contribute markedly to perinatal morbidity and mortality rates. 1 Because an elevated blood pressure (BP) after 20 weeks of gestation in a previously normotensive woman is common to the definition of both gestational hypertension and preeclampsia, 2,3 the issue of whether the development of these complications may be predicted on the basis of BP obtained during conventional antenatal visits has been addressed in several retrospective as well as prospective studies. 4 -7 Recent studies have tried to overcome the poor results from isolated conventional BP measurements in detecting hypertensive complications in pregnancy by relying on ambulatory BP monitoring (ABPM). 8 -17 By the use of ABPM, differences between healthy and complicated pregnancies in the circadian pattern of BP, previously documented for the second trimester of pregnancy, 9 can be observed as early as in the first trimester of pregnancy, quite before the actual clinical diagnosis of gestational hypertension or preeclampsia takes place for most pregnant women investigated. 15,17 As in the general nonpregnancy practice, the most common approach has been to rely for diagnosis on the arithmetic mean of all values determined by ABPM. However, the use of the 24-hour mean of BP does not provide a proper approach for an individualized early diagnosis of hypertension in pr...

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“…Statistical methods used to report reproducibility in ambulatory blood pressure monitoring have been simple correlations, 11,28,30 paired t-tests, 33 or ANO-VA. [31][32][33] Both a nonsignificant paired t-test and an excellent intraclass correlation between trials were used in this study to define reproducibility. The intraclass correlation would establish a significant association between the two trials whereas the nonsignficant paired t-test would confirm no differences between the two trials.…”

Section: Discussionmentioning

confidence: 99%

“…36 Subjects in this study were similar to subjects found in other reproducibility studies. 11,31,32 In addition, the subject sample falls into the blood pressure range that would be expected to lower blood pressure with exercise. 40 Therefore, the subject sample was representative of a normal population of middle-aged Stage I hypertensive individuals and suitable to assess the reproducibility of postexercise ambulatory blood pressure.…”

Section: Discussionmentioning

confidence: 99%

“…28,29 A high accuracy and reproducibility of ambulatory technology has been found for normo-and hypertensive adults during activities of daily living. 28,[30][31][32][33] Ambulatory monitoring has been utilized in the investigation of postexercise blood pressure-response. 19,20,26 No literature exists, however, on the reproducibility of ambulatory blood pressures following exercise.…”

Section: Introductionmentioning

confidence: 99%

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Reproducibility of postexercise ambulatory blood pressure in Stage I hypertension

et al. 2005

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The accuracy and reproducibility of ambulatory blood pressure monitoring used in intervention and treatment studies is essential to assure the desired health outcomes. The reproducibility of ambulatory variables in pharmacological studies has been reported, however, the reproducibility of ambulatory blood pressure variables associated with exercise has not been reported. Thus, the purpose of this study was to investigate the reproducibility of the postexercise ambulatory blood pressure in Stage I hypertensive adults. It was hypothesized that the reproducibility of the ambulatory blood pressure variables would not be different following two corresponding exercise and control treatments. A total of 18 Stage I hypertensive adults (142.173.15/ 91.671.80 mmHg) performed four randomized, 24 h AmBP monitoring sessions: two following a 50 min treadmill walk (50% VO 2 peak) and two on control days.Variables measured were: (1) average systolic and diastolic pressures for 24 h, daytime (06:00-22:00 h) and night time (22:00-06:00 h) and (2) systolic and diastolic load for the same time periods. Both a nonsignificant paired t-test and an excellent intraclass correlation were used to define reproducibility of the variables between the 1st and 2nd exercise trials and between the 1st and 2nd control trials. Reproducibility was found for all the control variables except for nighttime diastolic load. Reproducibility was found for all the systolic and diastolic exercise variables. Ambulatory blood pressure measurements, including average systolic and diastolic blood pressures and systolic and diastolic loads for 24 h, daytime and night time periods are reproducible following exercise.

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Ambulatory Blood Pressure Monitoring: How Reproducible Is It?

Cited by 38 publications

References 18 publications

Reproducibility of ambulatory blood pressure measurement in patients with coronary heart disease

Reproducibility of ambulatory blood pressure measurement in patients with coronary heart disease

Sampling Requirements for Ambulatory Blood Pressure Monitoring in the Diagnosis of Hypertension in Pregnancy

Reproducibility of postexercise ambulatory blood pressure in Stage I hypertension

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