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Coronary DiseaseNCT00123539

Estrogen Replacement to Reduce Risk of Neurologic Injury After Coronary Artery Bypass Graft Surgery

A study testing Estrogen Replacement Therapy and Surgery in people with Coronary Disease and Cardiovascular Diseases, run by National Heart, Lung, and Blood Institute (NHLBI) at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The purpose of this study is to test whether perioperative estrogen replacement in postmenopausal women reduces the risk for neurologic injury after coronary artery bypass graft (CABG) surgery. Read more about this study

Who is it for?
Ages 55 years and older, women only
What is being tested?
Estrogen Replacement Therapy and Surgery
Type of treatment
Surgery or procedure
How many people
334 participants
Where
1 siteUnited States
Study dates
Jun 2001to Aug 2005
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 55 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients whose scheduled procedure is CABG surgery OR
  • Patients whose scheduled procedure is isolated aortic surgery OR
  • Patients whose scheduled procedure is mitral valve surgery OR
  • Patients whose scheduled procedure is CABG combined with aortic or mitral valve surgery

Who cannot join

  • Patients having re-operations
  • Patients having combined carotid endarterectomy with CABG surgery
  • Patients having CABG with tricuspid valve surgery
  • Patients having mitral and aortic valvular surgery (with or without CABG surgery)
  • Elevation of liver function test before surgery or creatinine before surgery greater than 2 mg/dl
  • Emergency surgery
Show all 14Show fewer
  • Severe cognitive impairment before surgery as indicated by clinical history and/or a score greater than 12 on the Short Blessed Dementia Screening Test (see d11)
  • Inability to attend outpatient visits
  • A history of venous thromboembolism
  • Unexplained vaginal bleeding
  • A history of breast cancer or personal history of endometrial cancer in the absence of hysterectomy
  • Estrogen use within 6 months of the surgery
  • Patient refusal to participate
  • Inability to speak and read English or visual impairment

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Washington University

    St Louis, Missouri, 63110

Other trials in United States

About this study

Official title: Estradiol for Neurocognitive Dysfunction After CABG

The purpose of this study is to test whether perioperative estrogen replacement in postmenopausal women reduces the risk for neurologic injury after coronary artery bypass graft (CABG) surgery.

Read the detailed description

BACKGROUND:

Women undergoing CABG surgery have a higher operative mortality rate, longer hospitalizations, and higher hospital costs compared with men. A large proportion of this excess morbidity and mortality of surgery for women is due to perioperative neurologic injury. Estrogen has been consistently shown to reduce the extent of neurologic injury in a variety of in vitro and animal experimental stroke models. These data together strongly suggest that the higher risk for perioperative neurologic complications for elderly women may relate to their estrogen deficient state.

DESIGN NARRATIVE:

This randomized, placebo controlled study will test the hypothesis that perioperative estrogen replacement in postmenopausal women reduces the risk for neurologic injury after CABG surgery. Three hundred thirty-four women undergoing CABG surgery will be prospectively randomized to receive either 17 beta-estradiol or placebo in a double-blind fashion beginning the day before surgery and continuing for 5 days after surgery. Patients will be assessed for neurocognitive dysfunction, which is the most common manifestation of neurologic injury from cardiac surgery. Neurocognitive testing will be performed 1 to 2 days before surgery, 4 to 6 weeks postoperatively, and 6 months after surgery. The primary endpoint will be neurocognitive function 4 to 6 weeks after surgery for women who received 17 beta- estradiol compared with placebo perioperatively. The trial will also evaluate the importance of postoperative cognitive decline on measures of cognitive function and quality of life 6 months after surgery, and whether perioperative 17 beta-estradiol treatment improves these outcomes.

Being tested
Estrogen Replacement Therapy, Surgery
Medical subject headings
Coronary Disease, Cardiovascular Diseases, Heart Diseases, Neurologic Manifestations

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Estrogen Replacement TherapyDrug

  • SurgeryProcedure or surgery

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Neurocognitive function (measured 4 to 6 weeks after surgery)

  2. Cognitive function

  3. Quality of life (measured 6 months after surgery)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted25 Jul 2005 (estimated)
  2. Study startJun 2001
  3. Study completionAug 2005

Why it stopped: DSMB stopped the study based on conclusion of likely futility of treatment on the primary outcome.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Masking
Double blind
Enrolment
334 participants
IDs, dates and publications
ClinicalTrials.gov ID
NCT00123539
Sponsor's protocol ID
237
Other IDs
R01HL064600
Status last verified
Dec 2007
First submitted
21 Jul 2005
Last updated
29 Jul 2016
Results posted
No

Publications

  • Stearns JD, Davila-Roman VG, Barzilai B, Thompson RE, Grogan KL, Thomas B, Hogue CW Jr. Prognostic value of troponin I levels for predicting adverse cardiovascular outcomes in postmenopausal women undergoing cardiac surgery. Anesth Analg. 2009 Mar;108(3):719-26. doi: 10.1213/ane.0b013e318193fe73.

    PubMed 19224775
  • Hogue CW, Fucetola R, Hershey T, Freedland K, Davila-Roman VG, Goate AM, Thompson RE. Risk factors for neurocognitive dysfunction after cardiac surgery in postmenopausal women. Ann Thorac Surg. 2008 Aug;86(2):511-6. doi: 10.1016/j.athoracsur.2008.04.058.

    PubMed 18640325

Questions about this trial

What is this clinical trial studying?

A study testing Estrogen Replacement Therapy and Surgery in people with Coronary Disease and Cardiovascular Diseases, run by National Heart, Lung, and Blood Institute (NHLBI) at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 14 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 29 Jul 2016. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study was stopped early (reason given: DSMB stopped the study based on conclusion of likely futility of treatment on the primary outcome.). Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Neurocognitive function (measured 4 to 6 weeks after surgery). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00123539, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Jul 2016.

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