Developed by Shray Alag, The Harker School
Sections: Correlations,
Clinical Trials, and HPO
Navigate: Clinical Trials and HPO
| Name (Synonyms) | Correlation | |
|---|---|---|
| D016491 | Peripheral Vascular Diseases NIH | 0.58 |
| D058729 | Peripheral Arterial Disease NIH | 0.50 |
| Name (Synonyms) | Correlation | |
|---|---|---|
| HP:0004950 | Peripheral arterial stenosis HPO | 0.38 |
Navigate: Correlations HPO
There is one clinical trial.
Peripheral artery disease (PAD) is a disease in which plaque builds up in the arteries that carry blood to the head, organs, and limbs. PAD usually occurs in the arteries in the legs, but can affect any arteries. Over time, plaque can harden and narrow the arteries which limits the flow of oxygen-rich blood to organs and other parts of the body. Blocked blood flow to the arteries can cause pain and numbness. The pain is usually worse with exercise and gets better with rest. PAD can raise the risk of getting an infection which could lead to tissue death and amputation. This study is investigating whether granulocyte-macrophage colony stimulating factor (GM-CSF) improves symptoms and blood flow in people with PAD. GM-CSF is a drug that is used to stimulate the bone marrow to release stem cells. Participants in the study will be randomly selected to receive GM-CSF or a placebo. After a four-week screening phase, participants will receive injections of GM-CSF or a placebo three times a week for three-weeks. Three months later, participants will again receive injections of GM-CSF or placebo three times a week for three-weeks. At six months, the study team will follow up to see if the group that received GM-CSF had more improvement than the group that received placebo.
Description: Participants will be walk up and down a 100-foot hallway for 6 minutes to cover the maximum distance possible. The distance, measured in feet, completed after 6 minutes will be recorded.
Measure: Change in 6-minute walk distance Time: Baseline, Month 3, Month 6, Month 9Description: Graded treadmill exercise testing will be performed using the Gardner protocol where the treadmill speed is kept at 2 mph and the grade starts at 0 and inclines by 2% every two minutes. The peak walking time (PWT) is the time until exercise is terminated because of severe claudication. Exercise testing will be performed twice and longest time will be used as the PWT for that study visit.
Measure: Change in Peak Walking Time (PWT) Time: Baseline, Month 3, Month 6, Month 9Description: The Walking Impairment Questionnaire (WIQ) domain of walking distance asks respondents to rate how difficult it is to walk around home, as well as distances of 50, 150, 300, 600, 900 and 1500 feet. Possible responses are: not hard (4), slightly difficult (3), somewhat difficult (2), very difficult (1), and unable to do (0). Total raw scores range from 0 to 28 with higher scores indicating increased ability to walk further distances.
Measure: Change in Walking Impairment Questionnaire (WIQ): Walking Distance Score Time: Baseline, Month 3, Month 6, Month 9, Follow-up Years 1, 2, and 3Description: The Walking Impairment Questionnaire (WIQ) domain of walking speed asks respondents to rate how difficult it is to walk the distance of one block slowly, at an average speed, quickly, and running/jogging. Possible responses are: not hard (4), slightly difficult (3), somewhat difficult (2), very difficult (1), and unable to do (0). Total raw scores range from 0 to 16 with higher scores indicating increased ability to walk fast.
Measure: Change in Walking Impairment Questionnaire (WIQ): Walking Speed Score Time: Baseline, Month 3, Month 6, Month 9, Follow-up Years 1, 2, and 3Description: The Walking Impairment Questionnaire (WIQ) domain of stair climbing asks respondents to rate how difficult it is to climb 1, 2, and 3 flights of stairs. Possible responses are: not hard (4), slightly difficult (3), somewhat difficult (2), very difficult (1), and unable to do (0). Total raw scores range from 0 to 12 with higher scores indicating better ability to climb stairs.
Measure: Change in Walking Impairment Questionnaire (WIQ): Stair Climbing Score Time: Baseline, Month 3, Month 6, Month 9, Follow-up Years 1, 2, and 3Description: 36-item Short-Form Health Survey (SF-36) consists of eight scaled scores for the domains of: vitality, physical functioning, bodily pain, general health perceptions, physical role functioning, emotional role functioning, social role functioning, and mental health. Study participants respond to questions relating to their health and activity level by selecting from a variety of Likert scale and yes/no response options. Each scale is directly transformed into a 0-100 scale and lower scores indicate more disability (a score of 0 equates to maximum disability while a score of 100 indicates no disability).
Measure: Change in 36-item Short-Form Health Survey (SF-36) Score Time: Baseline, Month 3, Month 6, Month 9, Follow-up Years 1, 2, and 3Description: Claudication onset time (COT) during the treadmill exercise will be recorded along with the peak walking time (PWT). The claudication onset time (COT) is the duration of exercise until onset of the participant's typical claudication. This is differentiated from the peak walking time (PWT) which is the time until exercise is terminated because of severe claudication. Graded treadmill exercise testing will be performed using the Gardner protocol where the treadmill speed is kept at 2 mph and the grade starts at 0 and inclines by 2% every two minutes.
Measure: Change in Claudication Onset Time (COT) Time: Baseline, Month 3, Month 6, Month 9Description: To obtain the ankle-brachial index (ABI), bilateral upper and lower extremity blood pressure cuffs are inflated about 30 millimeters of mercury (mmHg) above the systolic pressure. Doppler flow signals are used to detect the reappearing perfusion while reducing the cuff pressure. The results is expressed as a segmental/arm pressure ratio (ABI index). The highest pressure of the two arms will be used for calculating the ABI. The average ratio is about 1.0+/-0.10; an index of 0.90 or lower is considered abnormal. In patients with calcific, non-compressible arteries (certain diabetics) where ABI measurements are unreliable, a toe/ arm pressure index ratio will be performed, with a 2.5 cm cuff used on the great or second toes. A toe/arm index less than 0.65 is considered abnormal.
Measure: Change in Ankle-Brachial Index (ABI) Time: Baseline, Month 3, Month 6, Month 9Description: Foot transcutaneous oxygen tension (TcPO2) is a noninvasive way to measure peripheral arterial disease. TcPO2 is obtained with a monitor before exercise after the patients have been standing for three minutes and is monitored throughout exercise. Values are recorded at initial claudication distance, absolute claudication distance, and after recovery from exercise. A commonly used cut point is 60 millimeters of mercury (mmHg), with values below this indicating the presence of peripheral arterial disease.
Measure: Change in Foot Transcutaneous Oxygen Tension (TcPO2) Time: Baseline, Month 3, Month 6, Month 9Alphabetical listing of all HPO terms. Navigate: Correlations Clinical Trials
Data processed on September 26, 2020.
An HTML report was created for each of the unique drugs, MeSH, and HPO terms associated with COVID-19 clinical trials. Each report contains a list of either the drug, the MeSH terms, or the HPO terms. All of the terms in a category are displayed on the left-hand side of the report to enable easy navigation, and the reports contain a list of correlated drugs, MeSH, and HPO terms. Further, all reports contain the details of the clinical trials in which the term is referenced. Every clinical trial report shows the mapped HPO and MeSH terms, which are also hyperlinked. Related HPO terms, with their associated genes, protein mutations, and SNPs are also referenced in the report.
Drug Reports MeSH Reports HPO Reports