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| Name | Class |
|---|---|
| American Thoracic Society | OTHER |
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This study will investigate the utility of 4D Medical's X-ray Velocimetry (XV) imaging analysis software for the detection of hyperinflation, and compare endobronchial valve placement outcomes with predictive indices obtained utilizing this technique.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| 4D X-ray Velocimetry | Diagnostic Test | X-ray velocimetry uses fluoroscopy to quantify local ventilation in the lung. |
| Measure | Description | Time Frame |
|---|---|---|
| Ratio of residual volume over functional residual capacity by 4DXV | We will compare an XV hyperinflation index to traditional pulmonary function tests (PFTs) and outcomes | 6 months |
| Expiratory Time Constants vs Fissure Completeness | We will examine the correlation between lobar expiratory time constants and fissure completeness by StratX | 1 year |
| Measure | Description | Time Frame |
|---|---|---|
| Improvement in Saint George Respiratory Questionnaire (SGRQ) | We will compare SGRQs pre and post valve placement to hyperinflative indices by 4D XV | 1 year |
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Inclusion:
Exclusion Criteria:
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Adults with symptomatic emphysema with hyperinflation and no conflating lung diseases or pregnancy.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Vanderbilt University Medical Center | Nashville | Tennessee | 37232 | United States |
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| ID | Term |
|---|---|
| D029424 | Pulmonary Disease, Chronic Obstructive |
| D004646 | Emphysema |
| ID | Term |
|---|---|
| D008173 | Lung Diseases, Obstructive |
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |
| D002908 | Chronic Disease |
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| D020969 |
| Disease Attributes |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |