0
ARTICLE |

Calcium Channel Blockers as Second-Line Therapy in Thiazide-Resistant Hypertension

F. Collart; R. Wens; M. Dratwa
Arch Intern Med. 1990;150(8):1755-1758. doi:10.1001/archinte.1990.00040031755032.
Text Size: A A A
Published online

To the Editor.—  We would like to make three major comments on the work of Prisant et al1 as a second-line antihypertensive medication in thiazide-resistant hypertension, and showing that this combination therapy is as efficient and safe as a more classical combination of propranolol and thiazide.Thiazides and calcium channel blockers have different mechanisms of action, the thiazide controlling the sodium-retaining process of hypertension and the calcium antagonist acting primarily as a vasodilatory drug. A direct natriuretic effect has been demonstrated for different dihydropyridine calcium channel blockers. For isradipine this effect is present both acutely and chronically, lasting for at least 3 months.2 One might ask if the additive hypotensive effect of isradipine to hydrochlorothiazide is due only to the vasodilatory effect of the drug, or also to an additional natriuretic effect. In this respect, comparing the 24-hour sodium excretion of the two groups of patients might have been of interest.It has

Topics

Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

Figures

Tables

References

Correspondence

CME
Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Comment

Multimedia

Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs
brightcove.createExperiences();