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  • Chlorthalidone more...

Chlorthalidone more effective than HCTZ in reducing MACE in long term: Study

Dr. Nandita MohanWritten by Dr. Nandita Mohan Published On 2021-01-24T21:30:59+05:30  |  Updated On 2021-01-25T12:59:24+05:30
Chlorthalidone more effective than HCTZ in reducing MACE in long term: Study
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According to recent research, investigators from the NYU School of Medicine, New York City, New York, USA found out that over the short-term there were no differences in the net clinical benefit between hydrochlorothiazide and chlorthalidone.The study is published in the Journal of Hypertension.There is continuous debate whether chlorthalidone (CTD) and hydrochlorothiazide (HCTZ) differ...

According to recent research, investigators from the NYU School of Medicine, New York City, New York, USA found out that over the short-term there were no differences in the net clinical benefit between hydrochlorothiazide and chlorthalidone.

The study is published in the Journal of Hypertension.

There is continuous debate whether chlorthalidone (CTD) and hydrochlorothiazide (HCTZ) differ in reducing major cardiovascular events (MACE). HCTZ is prescribed 10 times more commonly than CTD.
Hence, Roush, George C. and colleagues conducted this study to assess the difference between Chlorthalidone and hydrochlorothiazide in terms of major cardiovascular events, blood pressure, left ventricular mass, and adverse effects.
They carried out a systematic literature search which yielded 14 references, including two network meta-analyses of randomized trials with MACE and left ventricular mass as outcomes.
The findings were-
a. The network meta-analysis of randomized trials showed CTD reducing MACE more than HCTZ, hazard ratio = 0.79 (0.72–0.88), P < 0.0001, and an observational cohort study gave an identical point estimate: hazard ratio = 0.79 (0.68–0.92), P = 0.002.
b. In contrast, two observational cohort studies reported no differences between CTD and HCTZ.
c. However, in the studies showing the superiority of CTD median follow-up was 4.3 and 7.0 years, respectively, whereas in the latter studies showing no difference between the two drugs follow-up was only 0.95 and 0.25 years.
d. As differences in outcomes for MACE in hypertension trials with various interventions only emerge after prolonged (>1 year) therapy, differences in follow-up explain these discrepant results.
e. CTD also more effectively reduced left ventricular mass in observational data and network analysis of trials.
f. These advantages of CTD over HCTZ are consistent with greater reductions in night-time blood pressure, greater reductions in oxidative stress and platelet aggregation, and greater improvements in endothelial function.
Therefore, they concluded that "Over the short-term there were no differences in the net clinical benefit between HCTZ and CTD. However, long-term available data document CTD to be significantly more effective in reducing MACE than HCTZ."
chlorthalidone hydrochlorothiazide major cardiovascular events Journal of Hypertension 
Source : Journal of Hypertension
Dr. Nandita Mohan
Dr. Nandita Mohan

    BDS, MDS( Pedodontics and Preventive Dentistry)

    Dr. Nandita Mohan is a practicing pediatric dentist with more than 5 years of clinical work experience. Along with this, she is equally interested in keeping herself up to date about the latest developments in the field of medicine and dentistry which is the driving force for her to be in association with Medical Dialogues. She also has her name attached with many publications; both national and international. She has pursued her BDS from Rajiv Gandhi University of Health Sciences, Bangalore and later went to enter her dream specialty (MDS) in the Department of Pedodontics and Preventive Dentistry from Pt. B.D. Sharma University of Health Sciences. Through all the years of experience, her core interest in learning something new has never stopped. She can be contacted at editorial@medicaldialogues.in. Contact no. 011-43720751

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