A Community-Based Trial of Commercially Available Compression Tights in Patients With Postural Orthostatic Tachycardia Syndrome
Bibliographic record
Abstract
BACKGROUND: Compression garments reduce heart rate and symptoms in patients with postural orthostatic tachycardia syndrome in an acute laboratory setting. Patients taking medications controlling heart rate have less benefit from compression than those not on medications. The effectiveness of commercially available garments in a community-based setting, with and without medication use, is not known. OBJECTIVES: The authors sought to evaluate commercially available compression tights in a community-based setting both with, and without, medications modulating heart rate, using a clinical trial with 2 before-after protocols conducted in a randomized crossover fashion. METHODS: Participants (N = 26) held medications during protocol #1 and took medications as normal during protocol #2. For each, participants completed 4, 10-minute active stand tests in the morning (AM) and afternoon (PM) with the garments on (ON) and off (OFF) (AM-OFF, AM-ON, PM-ON, and PM-OFF). Heart rate (Holter monitor) and symptoms (Vanderbilt Orthostatic Symptom Score [VOSS]) were measured for each standing test. RESULTS: Protocol #1: Standing heart rate was reduced (105 [99-116] beats/min vs 119 [105-130] beats/min; P < 0.001) and symptoms improved (P < 0.001), during AM-ON vs AM-OFF. Standing heart rate (P = 0.04) and symptoms (P = 0.004) increased when compression was removed after several hours. Protocol #2: Standing heart rate was reduced (84 [77-90] beats/min vs 89 [84-100] beats/min; P < 0.001), and symptoms improved (P = 0.03), during AM-ON vs AM-OFF. Standing heart rate (P = 0.02) and symptoms (P < 0.001) increased when compression was removed after several hours. CONCLUSIONS: Commercially available compression tights reduced heart rate and symptoms both acutely and after several hours of use. This additional benefit persisted whether concomitant medications were used. (Compression Garments in the Community With POTS [COM-COM-POTS]; NCT04881318).
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".