Assessment of Right Ventricular Function by Newer Imaging in Echocardiography in Idiopathic Pulmonary Arterial Hypertension
Bibliographic record
Abstract
Background: The aims of the study were to assess the right ventricular (RV) functions in patients with idiopathic pulmonary arterial hypertension (IPAH) with RV longitudinal strain (RVLS) in addition to conventional parameters, as well as its correlation with severity and prognosis in IPAH. Methods: Twenty-two IPAH patients were followed up for 1 year. ANOVA and Gabriel's pairwise comparison tests were used for comparison of RVLS with respect to WHO functional class status. Patients were divided into non-survival (group 1) and survival (group 2), and clinical and echocardiographic parameters of RV function were compared at baseline and at 6 months with t -test & Mann-Whitney test. Results: At baseline, with respect to WHO functional class, mean RVLS showed no significant interclass difference (P = 0.0781). Among the other conventional echocardiographic parameters, RV E/A showed significant difference at baseline (P = 0.004), but not at 6 months (P = 0.366); whereas tricuspid annular plane systolic excursion (TAPSE) which had no significant difference initially (P = 0.174) revealed a significance level at 6 months (P = 0.029) between the two groups. Fractional area change (FAC), RV index of myocardial performance (RIMP), and right atrial (RA) area displayed significant difference neither at baseline nor at 6 months. RVLS exhibited significant difference neither at baseline (P = 0.912) nor at 6 months (P = 0.181). None of the echocardiographic parameters including RVLS showed a significant average change with change in severity of PAH both at 6 and 12 months. Conclusion: RVLS was not proved to be a useful parameter for early detection of RV dysfunction and prognosis in patients with IPAH in comparison with the conventional echocardiographic parameters. Cardiol Res. 2017;8(5):214-219 doi: https://doi.org/10.14740/cr600w Â
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 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 source (direct Gemma or distilled Codex), 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".