Nocturnal home hemodialysis improves baroreflex effectiveness index of end-stage renal disease patients
Bibliographic record
Abstract
BACKGROUND: In patients with end-stage renal disease receiving conventional hemodialysis, both the frequency with which brief rises or falls in systolic blood pressure initiate concordant changes in pulse interval (arterial baroreflex effectiveness index), and the gain of reflex heart rate responses to these stimuli (arterial baroreflex sensitivity) are diminished. In chronic renal failure, low baroreflex effectiveness index and baroreflex sensitivity are associated with increased rates of all-cause mortality and sudden death, respectively. Conversion to home nocturnal hemodialysis augments baroreflex sensitivity but its effects on baroreflex effectiveness index have not been reported. METHODS: In 20 consecutive hypertensive conventional hemodialysis patients training to transition to nocturnal hemodialysis (age 41 +/- 2 years; mean +/- standard error), baroreflex effectiveness index, baroreflex sensitivity (sequence method) and total arterial compliance (stroke volume/pulse pressure) were determined during quiet rest before and 2 months after conversion. RESULTS: With nocturnal hemodialysis, dialysis frequency doubled, the dose per session increased by 70% and antihypertensive medications were withdrawn (from 2.5 +/- 0.3 to 0.2 +/- 0.1 drugs/patient, P < 0.01) because systolic blood pressure fell (from 139 +/- 5 to 119 +/- 4 mmHg, P < 0.05). Baroreflex effectiveness index increased from (0.33 +/- 0.03 to 0.42 +/- 0.03, P = 0.01). Baroreflex sensitivity increased from 5.60 +/- 0.88 to 8.48 +/- 1.60 ms/mmHg (P < 0.05). Changes in total arterial compliance correlated with changes in baroreflex sensitivity (r = 0.63, P = 0.004) but not baroreflex effectiveness index (r = 0.05, P = 0.95), suggesting independent mechanisms for their attenuation and recovery in end-stage renal disease. CONCLUSION: Nocturnal hemodialysis increases baroreflex effectiveness index in addition to baroreflex sensitivity. The hypothesis that such changes might reduce cardiovascular event rates in this high-risk population merits prospective evaluation. More frequent engagement of the arterial baroreflex after conversion to nocturnal hemodialysis may improve short-term cardiovascular regulation.
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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 | 0.000 |
| 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".