Nitric Oxide Inhalation Therapy to Relieve Chest Pain in Patients With Coronary Artery Disease
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ClinicalTrials.gov Identifier: NCT00014040 |
Recruitment Status :
Completed
First Posted : April 9, 2001
Last Update Posted : March 4, 2008
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This study will test whether inhaling nitric oxide gas can improve blood flow to the heart, ventricular function, exercise tolerance in patients with coronary artery disease and chest pain that has not improved with medical or surgical therapy.
Patients with coronary artery disease who have chest pain despite treatment with medicines and angioplasty or surgery may be eligible for this study. Those enrolled will receive monetary compensation for their participation in this study.
The duration of the study is 5 days, with 2 testing periods lasting 2 days each. During one of the periods, the study participants will breathe nitric oxide mixed with room air through a face mask during the tests. During the other period, the participants will breathe room air alone through a face mask during the tests. At least 1 day will separate the treatment periods. During each of the 2 treatment periods (nitric oxide and room air), participants will undergo 4 tests to determine whether the treatment improves the heart's response to stress with increased heart rate and contraction. Approximately one hour before each of the tests, participants will breathe either nitric oxide mixed with room air or room air alone through the face mask, and continue the inhalation treatment while each test is being performed. The face mask will be removed at the end of each test.
On the morning of the first day of each treatment period, participants will have a special echocardiogram with imaging of the heart. The echocardiogram will be performed during an infusion of dobutamine, a medicine that increases heart rate and contraction, and serves to stress the heart. This manner of stress testing is commonly used in hospitals around the country to determine if walls of the heart are receiving sufficient blood supply. That afternoon, participants will undergo a magnetic resonance imaging (MRI) study of the heart. The MRI will determine the heart's blood flow and contraction while receiving the same dosage of dobutamine as was used earlier in the day. On the morning of the second day of each treatment period, participants will exercise on a treadmill until moderately uncomfortable chest pain is reported. Later that morning, participants will undergo cardiac catheterization. For the cardiac catheterization, a long tube (catheter) will be placed into a vein of the neck once the skin is numbed with xylocaine. This tube will be positioned within the right atrium of the heart and into a tube-like structure called the coronary sinus, where venous blood exits the heart muscle. A small catheter will also be placed in an artery of the upper forearm after the skin has been numbed with xylocaine. Blood samples will be taken to allow us to measure the amount of nitric oxide transported in the blood. The blood samples will be drawn (through the tube in the heart and through the small tube in the artery) at the beginning of the study and during infusion of dobutamine to stress the heart. The dose of the dobutamine infusion will be the same dose used in the previous day's stress studies.
After the completion of the first treatment period, we will stop testing for at least one day. Participants will begin the second treatment period with the inhalation treatment not received during the first treatment period.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Coronary Disease Myocardial Ischemia | Drug: Nitric Oxide and INOpulse Delivery System | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Enrollment : | 25 participants |
Primary Purpose: | Treatment |
Official Title: | Nitric Oxide Inhalation Therapy for Myocardial Ischemia in Patients With Coronary Artery Disease |
Study Start Date : | April 2001 |
Study Completion Date : | April 2003 |


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Ages Eligible for Study: | Child, Adult, Older Adult |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
INCLUSION CRITERIA:
Presence of angiographically determined CAD.
At least 1 attempt at revascularization by catheter-based technique or by surgery.
Myocardial ischemia as determined by stress echocardiography.
Canadian Cardiovascular Society functional class II or III angina pectoris despite conventional medical management.
Left ventricular ejection fraction greater than 30% (assessed by radionuclide angiography or by echocardiography).
Subject understands protocol and provides written, informed consent in addition to willingness to comply with specified follow-up evaluations.
EXCLUSION CRITERIA:
Left ventricular ejection fraction less than 30%.
Active cigarette smoker.
History of congestive heart failure.
History of bronchospasm requiring treatment.
Cardiac disease in addition to CAD (e.g. hypertrophic or dilated cardiomyopathy, valvular heart disease) as determined by echocardiography.
Angina pectoris at rest, prolonged in duration (greater than 20 minutes), or does not respond to nitroglycerin (2 tablets) during 2 months prior to study.
Evidence of extra-cardiac disease other than diabetes mellitus as determined by physical examination and screening lab work (e.g., creatinine greater than 1.5x upper limit of reference, liver enzymes greater than 2x upper limit of reference, hemoglobin less than 10 g/dL).
Patients who are HIV positive, have chronic inflammatory diseases, or are on chronic immunosuppressive medications.
Women of childbearing age unless recent pregnancy test is negative.
Lactating women.
Age less than 21 years.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00014040
United States, Maryland | |
National Heart, Lung and Blood Institute (NHLBI) | |
Bethesda, Maryland, United States, 20892 |
ClinicalTrials.gov Identifier: | NCT00014040 |
Other Study ID Numbers: |
010140 01-H-0140 |
First Posted: | April 9, 2001 Key Record Dates |
Last Update Posted: | March 4, 2008 |
Last Verified: | April 2003 |
Angina Pectoris Endothelium Platelets Inflammation Atherosclerosis |
Coronary Artery Disease Chest Pain Nitrous Oxide Inhalation Treadmill Exercise |
Respiratory Aspiration Coronary Artery Disease Myocardial Ischemia Coronary Disease Ischemia Heart Diseases Cardiovascular Diseases Arteriosclerosis Arterial Occlusive Diseases Vascular Diseases Pathologic Processes Respiration Disorders Respiratory Tract Diseases Nitric Oxide |
Bronchodilator Agents Autonomic Agents Peripheral Nervous System Agents Physiological Effects of Drugs Anti-Asthmatic Agents Respiratory System Agents Free Radical Scavengers Antioxidants Molecular Mechanisms of Pharmacological Action Neurotransmitter Agents Endothelium-Dependent Relaxing Factors Vasodilator Agents Gasotransmitters Protective Agents |