ArticlePaediatric anaesthesia2026
Impact of Priming Volume Reduction on Hematocrit Retention in Pediatric Cardiopulmonary Bypass: A Retrospective Analysis.
Article in Paediatric anaesthesia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundRetrograde autologous priming and venous antegrade priming replace the cardiopulmonary bypass circuit crystalloid with patient blood to mitigate hemodilution. However, their effectiveness in pediatric patients, particularly when analyzed as continuous variables, remains unclear.
aimsWe aimed to evaluate the effects of autologous priming techniques on blood conservation and patient safety during pediatric cardiac surgery.
methodsThis retrospective cohort study included 191 patients (age 0-14 years; weight > 6 kg) who underwent repair of ventricular and/or atrial septal defects. The primary endpoint was the correlation between the priming volume reduction rate (proportion of priming solution replaced) and the hematocrit retention ratio (hematocrit immediately after cardiopulmonary bypass initiation divided by pre-bypass hematocrit). Secondary outcomes, including transfusion rates, regional cerebral oxygen saturation, and lactate levels, were compared between a retrograde autologous priming group (n = 144) and a control group (n = 47). All patients underwent venous antegrade priming.
resultsThe priming volume reduction rate correlated positively with the hematocrit retention ratio (Spearman's ρ = 0.545, p < 0.001). Multiple regression confirmed this independent association: a 0.1 increase in the priming volume reduction rate corresponded to a 0.5% absolute increase in hematocrit at bypass initiation. The retrograde autologous priming group had a significantly higher transfusion-free surgery rate (93.1% vs. 76.6%; relative risk ratio 1.22; p = 0.005). Regarding safety and the postoperative course, no significant intergroup differences were found in trends in regional cerebral oxygen saturation (Time × retrograde autologous priming interaction) or in lactate levels. Similarly, intensive care unit and hospital lengths of stay did not differ significantly between groups. Safety analyses suggested no evidence of cerebral perfusion suppression during retrograde autologous priming.
conclusionThese findings suggest that even partial retrograde autologous priming is effective to mitigate hemodilution and is independently associated with improved hematocrit retention and a significant reduction in transfusion risk after initiation of cardiopulmonary bypass in pediatric patients.
trial registrationThis study was registered with the UMIN Clinical Trials Registry, Japan, prior to commencement (Trial ID: R000067879).
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.