The "nondipper" elderly: a clinical entity or a bias?

Area of Science:

• Gerontology
• Cardiology
• Sleep Medicine

Background:

• The nondipper (ND) blood pressure profile, characterized by a lack of nocturnal blood pressure decline, is observed in elderly hypertensive patients.
• The clinical significance of the ND pattern in the elderly remains debated, with questions about whether it represents a true clinical entity or a measurement artifact.

Purpose of the Study:

• To determine the prevalence of the nondipper blood pressure profile in the elderly.
• To investigate whether the ND pattern in ambulatory blood pressure monitoring in the elderly is an artifact or a distinct clinical condition.

Main Methods:

• A cross-sectional, observational study involving 65 community-dwelling elderly hypertensive patients.
• Patients underwent actigraphy, ambulatory blood pressure monitoring, and completed a sleep assessment questionnaire.
• Participants were classified as dippers (night-time BP decrease >10%) or nondippers (BP decrease <10%).

Main Results:

• Nondippers exhibited poorer objective sleep quality via actigraphy and higher scores on sleep questionnaires compared to dippers.
• A higher percentage of nondippers were using benzodiazepines, indicating poorer baseline sleep quality.
• Multivariate analysis revealed significant correlations between the nondipper profile and sleep quality, comorbidity, polypharmacy, and pulse pressure.

Conclusions:

• Actigraphy objectively confirms impaired sleep in elderly nondippers.
• The nondipping pattern in the elderly is not an artifact of cuff inflation but is associated with significant comorbidities and polypharmacy.
• The ND pattern in the elderly represents a clinically relevant condition that requires further in-depth study.