Key result
Automated office blood pressure measurements recorded a mean awake systolic blood pressure 8.6 mmHg higher than ambulatory monitoring, indicating it may not be as accurate as ambulatory monitoring in patients with chronic kidney disease.
Why the study?
The study aimed to compare manual office blood pressure and automated office blood pressure methods with ambulatory blood pressure monitoring in patients with chronic kidney disease.
Does automated office blood pressure (AOBP) measurement provide more accurate readings compared to manual office blood pressure (MOBP) when referenced against ambulatory blood pressure monitoring (ABPM) in patients with chronic kidney disease?
Cross-Sectional (n=64)
No
Does automated office blood pressure (AOBP) measurement provide more accurate readings compared to manual office blood pressure (MOBP) when referenced against ambulatory blood pressure monitoring (ABPM) in patients with chronic kidney disease?
Mean Difference: 8.6 (95% CI 4.3–12.8)
Absolute Event Rate: 148.8% vs 140.2%
p-value: p=<0.001
In patients with chronic kidney disease, automated office blood pressure measurements are more accurate than manual measurements when compared to ambulatory monitoring, though both office methods overestimate true ambulatory blood pressure.
AOBP may overestimate SBP versus ABPM in CKD; leaves open comparative utility versus MOBP and need for prospective validation.
BACKGROUND: Automated office blood pressure (AOBP) machines measure blood pressure (BP) multiple times over a brief period. We aimed to compare the results of manual office blood pressure (MOBP) and AOBP methods with ambulatory BP monitoring (ABPM) in patients with chronic kidney disease (CKD). METHODS: This study was performed on 64 patients with CKD (stages 3-4). A nurse manually measured the BP on both arms using a mercury sphygmomanometer, followed by AOBP of the arm with the higher BP and then ABPM. Mean BP readings were compared by paired t test and Bland-Altman graphs. RESULTS: < 0.001). Using Bland-Altman graphs, MOBP systolic BP readings showed a bias of 16.4 mmHg, while AOBP measurements indicated a bias of 8.6 mmHg compared with ABPM. CONCLUSION: AOBP methods may be more reliable than MOBP methods for determining BP in patients with CKD. However, the significantly higher mean BPs recorded by AOBP method suggested that AOBPs may not be as accurate as ABPM in patients with CKD.
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Jahromi et al. (2019) conducted a cross-sectional in Chronic kidney disease (n=64). Automated office blood pressure (AOBP) vs. Ambulatory blood pressure monitoring (ABPM) was evaluated on Mean awake systolic blood pressure (MD 8.6, 95% CI 4.3-12.8, p=<0.001). Automated office blood pressure measurements recorded a mean awake systolic blood pressure 8.6 mmHg higher than ambulatory monitoring, indicating it may not be as accurate as ambulatory monitoring in patients with chronic kidney disease.
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