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CompletedNCT00000484Updated Nov 26, 2013

Treatment of Hypertension

A Phase 3 interventional study of chlorothiazide and Rauwolfia alkaloids in Cardiovascular Diseases, Heart Diseases and Hypertension, sponsored by National Heart, Lung, and Blood Institute (NHLBI). Completed. Open to participants aged 21 Years to 55 Years. Per ClinicalTrials.gov, last updated 2013-11-26.

Sponsored by National Heart, Lung, and Blood Institute (NHLBI) · Phase 3, Interventional, and Prevention

Phase
Phase 3
Study type
Interventional
Allocation
Randomized
Ages
21 Years to 55 Years
Sex
All
01

Study summary

To determine whether the long-term treatment of essential hypertension without significant target organ disease materially influenced mortality and/or cardiovascular renal morbidity.

Read the detailed description

BACKGROUND:

This grant-supported, cooperative, fixed-protocol clinical study was initiated in 1966 and followed a cooperative study of the treatment of renal hypertension initiated in 1960 to evaluate the relative efficacy of several recognized drug regimens for reduction of blood pressure. Six centers (USPHS hospitals) and a coordinating center were involved in the trial.

DESIGN NARRATIVE:

Randomized, double-blind, fixed sample. Three hundred and eighty nine eligible patients were assigned to drug therapy consisting of chlorothiazide plus Rauwolfia serpentina or to placebo.

The study completion date listed in this record was inferred from last publication listed in the Citations section of this study record.

02

Conditions studied

  • Cardiovascular Diseases
  • Heart Diseases
  • Hypertension
  • Vascular Diseases
03

In context

Hypertension

6,689 studies on the registry are indexed under Hypertension; 965 are open to participants now.

Browse Hypertension studies →

Lead sponsor

National Heart, Lung, and Blood Institute (NHLBI) is the lead sponsor of 1,117 studies on the registry; 71 are open to participants now.

Of its 57 completed or terminated interventional studies of FDA-regulated products, 49 (86%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Men and women, ages 21-55. Mild essential hypertension (diastolic blood pressure over 90 mm Hg.

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Masking
Double

Interventions

  • Drugchlorothiazide
  • DrugRauwolfia alkaloids
06

Study locations

No study locations are listed for this record.

07

References and documents

Publications

  • U.S. Public Health Service Hospitals Cooperative Study Group. Smith WM, et al: Intervention Trial in Mild Hypertension. Epidemiology and Control of Hypertension. Paul, O (Ed.), Symposia Specialists, Miami, l975, pp. 46l-483.
  • Smith WM. Mild essential hypertension: benefit of treatment: discussion. Ann N Y Acad Sci. 1978 Mar 30;304:74-80. doi: 10.1111/j.1749-6632.1978.tb25573.x. No abstract available. PubMed 360933 ↗
  • Smith WM, Edlavitch SA, and Krushat WM: U.S. Public Health Service Hospitals Intervention Trial in Mild Hypertension. Hypertension, Determinants, Complications, and Intervention. Onesti G, and Klimt C, (Eds.), Grune & Stratton, New York, l979, pp. 38l-399.
  • Smith WM: Hypertension--Effectiveness of Early Treatment in Preventing Sequellae. Proceedings of the Eisenhower Medical Center. Preventive Interventions in the Practice of Medicine, Spring, l979, pp. 8l-87.
  • Smith WM, Edlavitch SA, and Krushat WM: Prevention of Stroke in Mild Hypertension: Public Health Service Hospitals Trial. Perspectives in Cardiovascular Research, Vol. 4. Prophylactic Approach to Hypertensive Diseases, Yamori Y, Lovenberg W, and Freis ED, (Eds.), Raven Press, New York, l979, pp. 53-62.
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 26, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00000484
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
First posted
Oct 28, 1999
Start date
Apr 1966
Completion
Jan 1979
Last update
Nov 26, 2013

Study contacts

Anthony Damato
USPHS Hospital
Richard Thurm
USPHS Hospital
Christfried Urner
USPHS Hospital
John Vaillancourt
USPHS Hospital
J. Warbasse
USPHS Hospital
Robert Wells
USPHS Hospital
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2000. You cannot join it, but the record below documents what was studied.

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