Resposta à massagem do seio carotídeo em pacientes\nsubmetidos a coronariografia e sua correlação com a doença coronariana
Bibliographic record
Abstract
Background: Previous studies have reported that carotid sinus massage responses are associated with advancing age and coronary artery disease. Hypothesis: This study was undertaken to investigate the potential role of carotid sinus hypersensitivity as a marker for the presence of coronary disease in patients who were referred for evaluation of chest pain. Methods and results: The carotid sinus stimulation with simultaneous recording of the electrocardiogram was performed before coronary arteriography in 73 selected consecutive participants (mean age 62±9,07) who were referred for evaluation of chest pain; 43 were men\nand 30 were women; a history of chest pain was classified using the grading of angina pectoris by the Canadian Cardiovascular Society (mean 1,70). Response studied during carotid sinus massage included change in heart rate. Change in heart rate was defined as maximal change from baseline electrocardiographic RR interval during carotid sinus masage, divided by the baseline RR, times 100. The Scoring Technique for Coronary Artery Stenosis was used to graduete the coronary stenosis (mean 1,55). No participant was in uncompensated congestive heart failure at the time of study. The frequency, magnitude and temporal relationship of heart rate changes after carotid sinus massage were analyzed in relation to angina class, severity, anatomic localization of coronary artery disease and others variables. We found 38\nparticipants (52%) with bradycardia; 9 (12,3%) with RR interval more than 3 seconds; 6 (0,08%) with advanced atrioventricular block and 23 (60,5%) had a decrease in heart rate > 10 beats/minute after carotid sinus massage. Conclusion: We did not find one significant relationship between carotid sinus hypersensitivity and angina class, coronary score disease, age and neither the severity of the coronary vessel stenosis; provably due to small size sample. We found a significant\nrelationship between carotid sinus hypersensitivity and males. The carotid sinus massage induced the fall in heart rate and was correlated with obstruction in the anterior descending coronary artery.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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) | 0.002 | 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".