Nighttime blood pressure dipping showed little test-retest reliability across outpatient and inpatient settings, with nonsignificant correlations for systolic, diastolic, and mean arterial pressure.
Observational (n=21)
Does a single 24-h ambulatory blood pressure recording reliably diagnose nighttime blood pressure dipping in individuals?
A single 24-hour ambulatory blood pressure recording may be insufficient to reliably diagnose nighttime blood pressure dipping due to poor test-retest reliability across different settings.
p-value: p=nonsignificant
This report examines the reliability of nighttime blood pressure dipping. Twenty-one individuals were studied twice with ambulatory blood pressure monitoring. On one occasion they were studied as outpatients, and on the other as inpatients on a clinical research ward. Blood pressure monitoring revealed the expected dip in blood pressure at nighttime. However, there was little test-retest reliability across the two settings. The test-retest correlations for the dip in blood pressure across the two settings were nonsignificant for systolic, diastolic, and mean arterial blood pressure. Caution is advised before diagnosing dipping or nondipping on the basis of one 24-h ambulatory blood pressure recording.
J E Dimsdale (Fri,) reported a observational. Ambulatory blood pressure monitoring setting (outpatient vs inpatient) was evaluated on Test-retest reliability of nighttime blood pressure dipping (p=nonsignificant). Nighttime blood pressure dipping showed little test-retest reliability across outpatient and inpatient settings, with nonsignificant correlations for systolic, diastolic, and mean arterial pressure.