Administration-Time-Dependent Effects of Hypertension Treatment on Ambulatory Blood Pressure in Patients With Chronic Kidney Disease

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Abstract
Many published prospective trials have reported clinically meaningful morning-evening, treatment-time differences in the blood pressure (BP)-lowering efficacy, duration of action, and safety of most classes of hypertension medications. Most important, it was recently documented that routine ingestion of the full daily dose of ≥1 hypertension medications at bedtime, compared with ingestion of all of them upon awakening, significantly reduces cardiovascular disease (CVD) events. Nocturnal hypertension and non-dipping (p < .001). Thus, the prevalence of non-dipping was significantly higher when all hypertension medications were ingested upon awakening (68.3%) than when ≥1 of them was ingested at bedtime (54.2%; p < .001 between groups), and even further attenuated (47.9%) when all of them were ingested at bedtime (p < .001). Additionally, the prevalence of a riser BP pattern, associated with highest CVD risk, was much greater (21.5%) among patients ingesting all medications upon awakening, compared with those ingesting some (15.7%) or all medications at bedtime (10.6%; p < .001 between groups), independent of CKD severity (disease stage). The latter group also showed a significantly higher prevalence of properly controlled ambulatory BP (p < .001) that was achieved by a significantly lower number of hypertension medications (p < .001) compared with patients treated upon awakening. Our findings demonstrate significantly lower asleep SBP and DBP means and attenuated prevalence of a blunted nighttime BP decline, i.e., lower prevalence of markers of CVD risk, in patients with CKD ingesting hypertension medications at bedtime than in those ingesting all of them upon awakening. These collective findings indicate that bedtime hypertension treatment, in conjunction with proper patient evaluation by ABPM to corroborate the diagnosis of hypertension and avoid treatment-induced nocturnal hypotension, should be the preferred therapeutic scheme for CKD. (Author correspondence: rhermida@uvigo. es )

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