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CompletedNCT00669279Updated Oct 5, 2017Results posted

Effect of Carvedilol Controlled-Release (CR) and Atenolol on Central Blood Pressure

A Phase 4 interventional study of Carvedilol CR and Atenolol in Hypertension, sponsored by University of Florida. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2017-10-05.

Sponsored by University of Florida · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
41
Allocation
Randomized
Ages
18 Years and older
Sex
All
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Study summary

The purpose of this research study is to determine whether atenolol or controlled release carvedilol lower blood pressure in the body as effectively as in the arm. Blood pressure measured in the aorta, a large blood vessel carrying blood away from the heart, may be a better measure of the harmful effects of high blood pressure on the body's organs. In the past, blood pressure has only been measured in the arms. However, blood pressure in the arms may not accurately reflect the blood pressure in the aorta and thus may mislead doctors treating high blood pressure. For this reason, we are testing whether two different medications for blood pressure, both in a class called beta blockers, have similar effects on blood pressure in the arm and aorta.

Read the detailed description

Carvedilol reduces aortic wave reflection and improves left ventricular/vascular coupling: a comparison with atenolol (CENTRAL Study) is a prospective, open-label, comparative, randomized control trial that evaluated brachial and central hemodynamic profiles in patients taking atenolol or controlled-release carvedilol.

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Conditions studied

  • Hypertension

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03

In context

Hypertension

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

This study's enrollment of 41 is below the median of 90 across 4,995 interventional studies indexed under Hypertension.

Browse Hypertension studies →

Lead sponsor

University of Florida is the lead sponsor of 1,254 studies on the registry; 201 are open to participants now.

Of its 170 completed or terminated interventional studies of FDA-regulated products, 136 (80%) have results posted.

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

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • At least 18 years of age
  • Hypertension (untreated or treated with no more then one anti-hypertensive drug)

Exclusion criteria

Exclusion Criteria:

  • Secondary forms of hypertension (including sleep apnea)
  • Patients currently treated with two or more antihypertensive drugs
  • Patients taking antihypertensive drugs with properly measured clinic systolic blood pressure greater then 170mmHg
  • Isolated systolic hypertension
  • Other diseases requiring treatment with blood pressure lowering medications
  • Heart rate less then 55 beats/min (in the absence of beta-blocker therapy)
  • Known cardiovascular disease including history of angina pectoris, heart failure, presence of a cardiac pacemaker, history of myocardial infarction or revascularization procedure, or cerebrovascular disease (including stroke and TIA)
  • Known diabetes mellitus (Type 1 or 2)
  • Renal insufficiency defined as a serum creatinine greater then 1.5mg/dL in males and 1.4mg/dL in females
  • Primary renal disease
  • Pregnancy or lactation
  • History of Raynaud's syndrome
  • Alcoholism and recreational drug use (due to compliance concerns)
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Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
41 participants (actual)

Study arms

  • Experimental
    Carvedilol CR

    Drug: Carvedilol CR

  • Experimental
    Atenolol

    Drug: Atenolol

Interventions

  • DrugCarvedilol CR

    Dose titration of 20mg by mouth once daily for 1 week, then 40mg by mouth once daily for 1 week, then 80mg by mouth once daily for 2 weeks

    Also known as: Coreg CR

  • DrugAtenolol

    Dose titration of 25mg by mouth once daily for 1 week, then 50mg by mouth once daily for 1 week, then 100mg by mouth once daily for 2 weeks

    Also known as: Tenormin

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What researchers measure

Primary outcomes

  1. Central Aortic Blood Pressure

    Time frame: Measured at baseline and 4 weeks.

Secondary outcomes

  1. Peripheral Blood Pressure

    Time frame: Measured at baseline, 2 weeks, and 4 weeks.

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Results

Posted Mar 23, 2012
Limitations and caveats
Small sample size, short duration.

Participant flow

Participant flow — Overall Study
MilestoneCarvedilol CRAtenolol
Started2219
Completed2219
Not completed00

Outcome measures

PrimaryCentral Aortic Blood Pressure
Time frame:
Measured at baseline and 4 weeks.
Reported as:
Mean · mmHg
Central Aortic Blood Pressure
mmHgCarvedilol CRAtenolol
Central Aortic Blood Pressure-16.1 ± 10.4-16.0 ± 18.7
SecondaryPeripheral Blood Pressure
Time frame:
Measured at baseline, 2 weeks, and 4 weeks.

Results for this outcome have not been posted.

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Carvedilol CR—0/22 (0%)0/22 (0%)
Atenolol—0/19 (0%)0/19 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Carvedilol CRAtenololTotal
<=18 years000
Between 18 and 65 years221941
>=65 years000
Age, Continuous
Age, Continuous(years)Carvedilol CRAtenololTotal
Mean47.7 ± 13.146.1 ± 9.946.9 ± 11.5
Sex: Female, Male
Sex: Female, Male(Participants)Carvedilol CRAtenololTotal
Female131326
Male9615
Region of Enrollment
Region of Enrollment(participants)Carvedilol CRAtenololTotal
United States221941
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Study locations

1 site
  • University of Florida
    Gainesville, Florida 32610, United States
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 5, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00669279
Lead sponsor
University of Florida
Collaborators
GlaxoSmithKline
Responsible party
Sponsor
First posted
Apr 30, 2008
Start date
Apr 2008
Primary completion
Jul 2010
Completion
Jul 2010
Results posted
Mar 23, 2012
Last update
Oct 5, 2017

Study contacts

Benjamin Epstein, Pharm.D.
principal investigator · University of Florida

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2017. You cannot join it, but the record below documents what was studied.

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