Noninvasive Prediction of Pulmonary Hypertension in Chronic Obstructive Pulmonary Disease by Echocardiography With & It's Co-Relation With the Disease Severity (Hospital Based Study)
Bibliographic record
Abstract
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is one of most common cause of death. Pulmonary hypertension, one of the major and under diagnosed complications of COPD which have a great impact on outcome of COAD and associated with frequent exacerbations and bad prognosis. Echocardiography provides a rapid, noninvasive, portable, and accurate method to evaluate changes related to pulmonary hypertension in COAD.OBJECTIVE OF STUDY: Study pulmonary artery systolic pressure and Tricuspid annular plane systolic excursion in patients with COAD by 2D ECHO Doppler and correlate them with COPD severity.METHOD: Cross sectional study was conducted on 50 COPD patients in Baghdad teaching hospital (age>40 year) from first of January to the end of June, 2017. First, the diagnosis of COPD was confirmed and evaluated for staging by history, clinical examination, and spirometery.All patients have undergone ECG and 2D echocardiography and systolic pulmonary artery pressure and Tricuspid Annular Plane Systolic Excursion (TAPSE) were calculated. Patients with other cardiac or respiratory problems (asthma, pulmonary TB, lung malignancy, connective tissue diseases, interstitial lung disease, and cardiac ischemia, left side heart failure) were excluded from this study.RESULTS: Study of PASP by TR jet with the use of 2D ECHO on 50 patients with COPD showed that 20 patients had normal echo study , mild increase in PASP was found in 15 patients, moderate 11, and severe increase in 4 patients.Study of TAPSE by 2D ECHO showed that 35 patients had normal TAPSE values, while others 15 had abnormal values classified as mild, moderate, and severe: 3, 9, and 3, respectively.A significant associations between echo findings of increasing PASP and abnormal TAPSE, with decrease in FEV1, and oxygen saturation measured by pulse oximeter, duration since COPD was diagnosed and MRC dyspnea scale.CONCLUSION: High incidence of pulmonary hypertension with increasing severity of COAD. Echocardiography is useful and effective tool for detection of PHT secondary to COPD.
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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 | 0.000 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".