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Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Chronotherapy improves blood pressure control and reduces vascular risk in CKD
Ramón C Hermida1, Diana E Ayala, Michael H Smolensky
1Bioengineering & Chronobiology Laboratories, University of Vigo, Campus Universitario, Vigo 36310, Spain. rhermida@uvigo.es
Insights
Taking hypertension medications at bedtime significantly lowers nighttime blood pressure and cardiovascular risk in chronic kidney disease (CKD) patients. This strategy improves blood pressure control and overall health outcomes.
Area of Science:
- Nephrology
- Cardiology
- Pharmacology
Background:
- Patients with chronic kidney disease (CKD) often exhibit elevated nighttime blood pressure and a nondipper pattern, increasing cardiovascular risk.
- Elevated sleep-time blood pressure is a key indicator of hypertension and inadequate blood pressure management in CKD.
- The timing of hypertension medication intake significantly impacts efficacy and 24-hour blood pressure control.
Purpose of the Study:
- To investigate the impact of medication timing on blood pressure control in CKD patients.
- To identify optimal therapeutic strategies for managing hypertension in CKD.
- To evaluate the role of nighttime blood pressure reduction as a cardiovascular risk predictor.
Main Methods:
- Review of existing literature on hypertension medication timing and its effects on 24-hour blood pressure patterns.
- Analysis of clinical data correlating nighttime blood pressure reduction with cardiovascular outcomes.
- Emphasis on ambulatory blood pressure monitoring for diagnosis and risk assessment in CKD.
Main Results:
- Bedtime administration of certain antihypertensives (e.g., ACE inhibitors, ARBs) is more effective than morning dosing for reducing sleep-time blood pressure.
- Achieving a progressive reduction in blood pressure during sleep is a significant predictor of reduced cardiovascular risk.
- Nighttime blood pressure control is crucial for managing hypertension and cardiovascular risk in CKD patients.
Conclusions:
- Therapeutic strategies involving bedtime medication intake are preferable for managing hypertension in CKD patients.
- Reducing sleep-time blood pressure is a novel and effective target for decreasing cardiovascular risk.
- Ambulatory blood pressure monitoring is recommended for hypertension diagnosis and risk assessment in CKD.
Abstract:
In patients with chronic kidney disease (CKD), the prevalence of increased blood pressure during sleep and blunted sleep-time-relative blood pressure decline (a nondipper pattern) is very high and increases substantially with disease severity. Elevated blood pressure during sleep is the major criterion for the diagnoses of hypertension and inadequate therapeutic ambulatory blood pressure control in these patients. Substantial, clinically meaningful ingestion-time-dependent differences in the safety, efficacy, duration of action and/or effects on the 24 h blood pressure pattern of six different classes of hypertension medications and their combinations have been substantiated. For example, bedtime ingestion of angiotensin-converting-enzyme inhibitors and angiotensin-receptor blockers is more effective than morning ingestion in reducing blood pressure during sleep and converting the 24 h blood pressure profile into a dipper pattern. We have identified a progressive reduction in blood pressure during sleep--a novel therapeutic target best achieved by ingestion of one or more hypertension medications at bedtime--as the most significant predictor of decreased cardiovascular risk in patients with and without CKD. Recent findings suggest that in patients with CKD, ambulatory blood pressure monitoring should be used for the diagnosis of hypertension and assessment of cardiovascular disease risk, and that therapeutic strategies given at bedtime rather than on awakening are preferable for the management of hypertension.
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