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Can nocturnal hypertension predict cardiovascular risk?
Oded Friedman1, Alexander G Logan
1Samuel Lunenfeld Research Institute, Division of Nephrology, Mount Sinai Hospital.
Integrated Blood Pressure Control
|September 28, 2011
Summary
Nocturnal hypertension and non-dipping blood pressure are linked to worse cardiovascular and kidney outcomes. Interventions may normalize nighttime blood pressure, but their long-term benefits require further study.
Area of Science:
- Cardiology
- Nephrology
- Sleep Medicine
Background:
- Nocturnal hypertension and non-dipping blood pressure are significant indicators of poor cardiovascular prognosis.
- These conditions often coexist and represent distinct but related pathophysiological processes.
- Understanding their implications is crucial for managing cardiovascular and renal health.
Purpose of the Study:
- To review definitions, diagnostic challenges, and pathogenesis of nocturnal hypertension and non-dipping.
- To explore the prognostic significance of these blood pressure abnormalities.
- To discuss current and potential therapeutic strategies.
Main Methods:
- Literature review of studies on nocturnal hypertension and non-dipping blood pressure.
- Analysis of diagnostic criteria and limitations.
- Synthesis of data on pathogenesis, patient profiles, and prognostic impact.
- Evaluation of existing and proposed treatment approaches.
Main Results:
- Nocturnal hypertension and non-dipping are associated with increased mortality, cardiovascular events, and renal function decline.
- These risks appear independent of daytime and 24-hour blood pressure levels.
- Potential underlying mechanisms include abnormal renal sodium handling and altered sympathovagal balance.
Conclusions:
- Persistent nocturnal hypertension and non-dipping are strong predictors of adverse cardiovascular and renal outcomes.
- Therapeutic strategies aim to normalize nocturnal blood pressure and circadian rhythm.
- The clinical benefit of normalizing these patterns on long-term outcomes needs further investigation.
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