SAGE Score in Normotensive and Pre-Hypertensive Patients: A Proof of Concept

Rayne Ramos Fagundes Rigonatto1,2, Priscila Valverde Oliveira Vitorino1,2,3, Adriana Camargo Oliveira1

  • 1Universidade Federal de Goiás - Programa de Pós-graduação em Ciências da Saúde, Goiânia, GO - Brasil.

Insights

The SAGE score effectively identifies individuals at risk for increased pulse wave velocity (PWV), even in non-hypertensive and pre-hypertensive groups. Further refinement is needed for a specific score tailored to these populations.

Area of Science:

  • Cardiovascular Physiology
  • Biomedical Engineering
  • Clinical Diagnostics

Background:

  • The SAGE score was initially developed to identify individuals at risk for elevated pulse wave velocity (PWV).
  • Previous research primarily focused on the application of the SAGE score within hypertensive patient populations.

Purpose of the Study:

  • To evaluate the SAGE score's efficacy in detecting increased PWV among non-hypertensive and pre-hypertensive individuals.
  • To assess the score's ability to identify early signs of arterial stiffness in at-risk, non-hypertensive populations.

Main Methods:

  • A retrospective cross-sectional study analyzed central blood pressure data and calculated SAGE scores in 100 normotensive and pre-hypertensive subjects.
  • Sensitivity, specificity, and predictive values were determined for various PWV cut-off points (≥10 m/s, ≥9.08 m/s, ≥7.30 m/s).
  • Statistical significance was set at p<0.05.

Main Results:

  • The SAGE score demonstrated strong correlations with age (r=0.938), glycemia (r=0.366), and glomerular filtration rate (r=-0.658).
  • Areas under the ROC curve were high across all PWV cut-offs (0.967-0.977), indicating excellent diagnostic performance.
  • Optimal cut-off points were identified: score 7 for PWV ≥10 m/s (95.40% specificity, 100% sensitivity), score 5 for PWV ≥9.08 m/s (96.00% sensitivity, 94.70% specificity), and score 2 for PWV ≥7.30 m/s.

Conclusions:

  • The SAGE score effectively identifies individuals at increased risk of arterial stiffness across different PWV thresholds.
  • The findings suggest the SAGE score's potential utility in non-hypertensive and pre-hypertensive individuals.
  • Development of a SAGE score specifically for normotensive and pre-hypertensive subjects is warranted.
Abstract

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