Document Detail

Effect of an L- and T-type calcium channel blocker on 24-hour systolic blood pressure and heart rate in hypertensive patients.
MedLine Citation:
PMID:  22563335     Owner:  NLM     Status:  PubMed-not-MEDLINE    
BACKGROUND AND OBJECTIVES: The aim of this study was to evaluate the effects of an L- and T-type calcium channel blocker (CCB) on 24-hour systolic blood pressure (24-hour SBP) and heart rate (24-hour HR) profiles in essential hypertensive patients.
SUBJECTS AND METHODS: Thirty-seven consecutive patients were enrolled in this study. The 24-hour SBP and HR were recorded before and after treatment with efonidipine (L- and T-type CCB, 40 mg), after waking. Changes in 24-hour SBP and HR and the diurnal to nocturnal SBP ratio were measured. The best-fit curves of changes in SBP and HR were depicted using a periodic function.
RESULTS: The mean 24-hour SBP and HR decreased significantly after treatment. The diurnal to nocturnal SBP ratio in dipper-type hypertension cases decreased from 16.7±6.1% to 8.3±9.8% (p<0.05), whereas in non-dipper hypertension cases, it increased from 2.3±2.9% to 7.7±5.1% (p<0.01). The antihypertensive effect was minimal at 5.0 hours after drug administration and it slowly recovered at a constant rate (2.1 mm Hg/h) over 12 hours in dipper cases. The median 24-hour changes in HR in the dipper and non-dipper cases were -2.3/min and -5.4/min, respectively. A continuous reduction in the change in HR was seen from 3.5 to 23 hours after drug administration.
CONCLUSION: The antihypertensive action of efonidipine was characterized by a slow recovery of the SBP decrease at a constant rate (2.1 mm Hg/h) and a non-administration time dependent reduction in 24-hour HR.
Masae Komukai; Takeshi Tsutsumi; Mio Ebado; Youichi Takeyama
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Publication Detail:
Type:  Journal Article     Date:  2012-04-26
Journal Detail:
Title:  Korean circulation journal     Volume:  42     ISSN:  1738-5555     ISO Abbreviation:  Korean Circ J     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-05-07     Completed Date:  2012-10-02     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  101247141     Medline TA:  Korean Circ J     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  231-8     Citation Subset:  -    
Division of Cardiology, Showa University Fujigaoka Hospital, Yokohama, Japan.
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