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  2. Keyword: Organ Dysfunction Scores
Figure 1
ABC
Original Article

Association between Clinical Risk Score (Heart, Grace and TIMI) and Angiographic Complexity in Acute Coronary Syndrome without ST Segment Elevation

Alexandre Vianna Cedro et al. Diandro Marinho Mota Louis Nakayama Ohe Ari Timerman … José Ribamar Costa Laura de Siqueira Castro

Abstract

Background:

GRACE, TIMI and HEART scores have been previously validated to predict serious untoward events among patients with non-ST elevation acute coronary syndrome (Non-ST ACS). However, the ability of these scores to discriminate the angiographic complexity of coronary artery disease has not been clearly established.

Objectives:

We sought to evaluate the correlation between clinical scores (TIMI, GRACE and HEART) and the anatomical complexity assessed by SYNTAX score, among non-ST ACS patients undergoing cinecoronariography.

Methods:

Transversal cohort encompassing patients with diagnosis of Non-ST ACS referred to invasive stratification in our single center, between July 2018 and February 2019. Association between the scores was established by the Pearson’s linear correlation test while the accuracy of the clinical scores versus SYNTAX score was determined with the ROC curve.

Results:

A total of 138 patients were enrolled. Median GRACE, TIMI and HEART scores were 97, 3 and 5, respectively, whereas the median SYNTAX was 8. There was a positive correlation between the SYNTAX and the HEART (ρ =0.29; p<0.01) and GRACE (ρ =0.18; p 4 presented 100% sensitivity, with 50% specificity; and GRACE> 139 showed 55% sensitivity and 97% specificity for high SYNTAX.

Conclusion:

The clinical scores presented a positive, although modest, association with the SYNTAX score. The combined use of HEART and GRACE offers good accuracy for detecting angiographic complexity.

  • Acute coronary syndrome
  • Angiography/complications
  • Hospitalization
  • Myocardial Infarction
  • Organ Dysfunction Scores
  • Thrombosis
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Creative Commons Attribution (CC BY) Creative Commons license
06/09/2021 DOI: 10.36660/abc.20190417 Views 1
Figure 1
ABC
Original Article

Assessment of Autonomic Function by Phase Rectification of RRInterval Histogram Analysis in Chagas Disease

Olivassé Nasari Junior et al. Paulo Roberto Benchimol-Barbosa Roberto Coury Pedrosa Jurandir Nadal

Background:

In chronic Chagas disease (ChD), impairment of cardiac autonomic function bears prognostic implications. Phase‑rectification of RR-interval series isolates the sympathetic, acceleration phase (AC) and parasympathetic, deceleration phase (DC) influences on cardiac autonomic modulation.

Objective:

This study investigated heart rate variability (HRV) as a function of RR-interval to assess autonomic function in healthy and ChD subjects.

Methods:

Control (n = 20) and ChD (n = 20) groups were studied. All underwent 60-min head-up tilt table test under ECG recording. Histogram of RR-interval series was calculated, with 100 ms class, ranging from 600–1100 ms. In each class, mean RR-intervals (MNN) and root-mean-squared difference (RMSNN) of consecutive normal RR-intervals that suited a particular class were calculated. Average of all RMSNN values in each class was analyzed as function of MNN, in the whole series (RMSNNT), and in AC (RMSNNAC) and DC (RMSNNDC) phases. Slopes of linear regression lines were compared between groups using Student t-test. Correlation coefficients were tested before comparisons. RMSNN was log-transformed. (α < 0.05).

Results:

Correlation coefficient was significant in all regressions (p < 0.05). In the control group, RMSNNT, RMSNNAC, and RMSNNDCsignificantly increased linearly with MNN (p < 0.05). In ChD, only RMSNNAC showed significant increase as a function of MNN, whereas RMSNNT and RMSNNDC did not.

Conclusion:

HRV increases in proportion with the RR-interval in healthy subjects. This behavior is lost in ChD, particularly in the DC phase, indicating cardiac vagal incompetence.

  • Chagas Cardiomyopathy
  • Chagas disease
  • Charts
  • Heart Rate
  • Organ Dysfunction Scores
  • Statistics as Topic
  • Sympathetic Nervous System
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Creative Commons Attribution (CC BY) Creative Commons license
14/04/2015 DOI: 10.5935/abc.20150032 Views 2

How to cite this article

EndNote RIS

Electronic Document Format (Vancouver)

Cedro AV, Mota DM, Ohe LN, Timerman A, Costa JR, Castro LS. Association between Clinical Risk Score (Heart, Grace and TIMI) and Angiographic Complexity in Acute Coronary Syndrome without ST Segment Elevation. Arquivos Brasileiros de Cardiologia 2021;117(2):281-7.

Electronic Document Format (ABNT)

Cedro, Alexandre Vianna; Mota, Diandro Marinho; Ohe, Louis Nakayama; Timerman, Ari; Costa, José Ribamar; Castro, Laura de Siqueira. Association between Clinical Risk Score (Heart, Grace and TIMI) and Angiographic Complexity in Acute Coronary Syndrome without ST Segment Elevation. Arquivos Brasileiros de Cardiologia, v. 117, n. 2, p. 281-287, Sep. 2021.

Electronic Document Format (APA)

Cedro, A. V., Mota, D. M., Ohe, L. N., Timerman, A., Costa, J. R., & Castro, L. S. (2021). Association between Clinical Risk Score (Heart, Grace and TIMI) and Angiographic Complexity in Acute Coronary Syndrome without ST Segment Elevation. Arquivos Brasileiros de Cardiologia, 117(2), 281-287.

Electronic Document Format (ISO)

Cedro, Alexandre Vianna and Mota, Diandro Marinho and Ohe, Louis Nakayama and Timerman, Ari and Costa, José Ribamar and Castro, Laura de Siqueira. Association between Clinical Risk Score (Heart, Grace and TIMI) and Angiographic Complexity in Acute Coronary Syndrome without ST Segment Elevation. Arquivos Brasileiros de Cardiologia [online]. 2021, vol. 117, n. 2, [cited 2026-10-14], pp. 281-287. Available from: <https://journals.cardiol.br/en/article/association-between-clinical-risk-score-heart-grace-and-timi-and-angiographic-complexity-in-acute-coronary-syndrome-without-st-segment-elevation/>. ISSN 0066-782X

EndNote RIS

Electronic Document Format (Vancouver)

Nasari Junior O, Benchimol-Barbosa PR, Pedrosa RC, Nadal J. Assessment of Autonomic Function by Phase Rectification of RRInterval Histogram Analysis in Chagas Disease. Arquivos Brasileiros de Cardiologia 2015;104(6):450-5.

Electronic Document Format (ABNT)

Nasari Junior, Olivassé; Benchimol-Barbosa, Paulo Roberto; Pedrosa, Roberto Coury; Nadal, Jurandir. Assessment of Autonomic Function by Phase Rectification of RRInterval Histogram Analysis in Chagas Disease. Arquivos Brasileiros de Cardiologia, v. 104, n. 6, p. 450-455, Apr. 2015.

Electronic Document Format (APA)

Nasari Junior, O., Benchimol-Barbosa, P. R., Pedrosa, R. C., & Nadal, J. (2015). Assessment of Autonomic Function by Phase Rectification of RRInterval Histogram Analysis in Chagas Disease. Arquivos Brasileiros de Cardiologia, 104(6), 450-455.

Electronic Document Format (ISO)

Nasari Junior, Olivassé and Benchimol-Barbosa, Paulo Roberto and Pedrosa, Roberto Coury and Nadal, Jurandir. Assessment of Autonomic Function by Phase Rectification of RRInterval Histogram Analysis in Chagas Disease. Arquivos Brasileiros de Cardiologia [online]. 2015, vol. 104, n. 6, [cited 2026-10-14], pp. 450-455. Available from: <https://journals.cardiol.br/en/article/assessment-of-autonomic-function-by-phase-rectification-of-rrinterval-histogram-analysis-in-chagas-disease/>. ISSN 0066-782X

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