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  2. Keyword: microcirculation
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IJCS
Viewpoint

New Insights Into Ischemic Heart Disease in Women: The Central Role of Coronary Microvascular Dysfunction Current Insights, Diagnostic Advances, And Therapeutic Uncertainties

Elizabeth Regina Giunco Alexandre et al. Isabelle Salomão Larissa Neto-Espíndola Rafaela Penalva … Mayara Lídia Da Silva Claudio Tinoco Mesquita

Introduction

This viewpoint discusses emerging evidence and the clinical implications of coronary microvascular dysfunction (CMD) in women, offering a focused perspective on pathophysiologic, diagnostic, and therapeutic features that distinguish ischemic heart disease (IHD) in women from that in men. Beyond summarizing available data, we highlight the growing body of evidence supporting CMD as an important and often underrecognized contributor to ischemic symptoms and cardiovascular risk in women. We emphasize key concepts and ongoing controversies without intending to provide definitive therapeutic recommendations.

Ischemic heart disease (IHD) remains a leading cause of morbidity and mortality worldwide. Recent evidence also highlighted sex-based differences in ischemic pathophysiology and vascular aging in women.

[…]

  • microcirculation
  • Microvascular Angina
  • Myocardial Ischemia
  • Women's Health
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Creative Commons Attribution (CC BY) Creative Commons license
24/07/2026 DOI: 10.36660/ijcs.20250031 Views 1
ABC
Editorial

Coronary Microvascular Dysfunction: Does it Really Matter in Chagas Disease?

Maria do Carmo Pereira Nunes

There is a growing recognition that disorders affecting the structure and function of the coronary microcirculation can act as key mediators of patient symptoms and prognosis. The subset of disorders affecting the microcirculation is termed coronary microvascular disease (CMD), which is expressed as either the inability of the coronary arteries to dilate appropriately to meet myocardial oxygen demand and/or as the abrupt reduction in coronary blood flow related to coronary spasm.

For the past 2 decades, CMD has been actively investigated in various cardiac conditions across a broad spectrum of cardiovascular risk factors. , Microvascular dysfunction is triggered by low-grade systemic inflammation induced by conventional cardiovascular risk factors, including hypertension, diabetes, obesity, dyslipidemia, and older age. , This spectrum of abnormalities may likely be magnified by the presence of epicardial atherosclerosis.

[…]

  • Atherosclerosis
  • Chagas Diseases/physiopathology
  • Inflammation
  • microcirculation
  • Myocardial Ischemia
  • Risk Factors
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Creative Commons Attribution (CC BY) Creative Commons license
18/01/2021 DOI: 10.36660/abc.20201219 Views 1
Coronary flow reserve in sickle cell anemia
ABC
Artigo Original

Coronary flow reserve in sickle cell anemia

José Leão de Souza Júnior et al. Ana Clara Tude Rodrigues Paula Cássia Buck Sandra Fátima Menosi Guallandro Charles Mady

BACKGROUND: Patients with sickle cell anemia (SCA) frequently present with episodes of chest pain, alterations in the resting electrocardiogram, and changes in cardiac structure and functions. OBJECTIVE: To evaluate the effect of recurrent episodes of vaso-occlusion on the coronary microcirculation. METHODS: Coronary flow velocity and coronary flow reserve (CFR) of stable patients with SCA (n=10, 5 females, 24.4±5.4 years) were measured in the anterior descending coronary artery with transesophageal echocardiogram at baseline and after intravenous adenosine-induced maximum hyperemia, and compared to those of patients with sickle cell trait (TRA, n=10, 5 females, 27.7±3.2 years), iron deficiency anemia (IRO, n=8, 8 females, 26.6±5.2 years) and control group (NOR, n=10, 5 females, 26.3±6.3 years). RESULTS: The SCA group presented increased diastolic coronary flow velocities (p<0.01) at baseline and during maximum hyperemia (67.3±14.0 and 198.2±37.9 cm/s, respectively) when compared with the other three groups – TRA (34.4±11.9 and 114.7±36.4 cm/s), IRO (42.4±10.4 and 141.0±18.7 cm/s) and NOR (38.1±10.0 and 126.8±24.6 cm/s). However, CFR was normal in the SCA group (3.0±0.7) and comparable (p=0.70) to the other groups – TRA (3.4±0.8), IRO (3.5±1.2), and NOR (3.4±0.8). CONCLUSION: Despite the higher coronary flow velocities already observed at baseline and also during maximum hyperemia, CFR is normal in SCA, which suggests preserved coronary microcirculation. The episodes of vaso-occlusion are not responsible for the cardiologic findings in this disease.

  • Anemia
  • Echocardiography
  • microcirculation
  • sickle cell
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Creative Commons Attribution (CC BY) Creative Commons license
15/06/2007 DOI: 10.1590/S0066-782X2007000500009

How to cite this article

EndNote RIS

Electronic Document Format (Vancouver)

Alexandre ERG, Salomão I, Neto-Espíndola L, Penalva R, Silva MLD, Mesquita CT. New Insights Into Ischemic Heart Disease in Women: The Central Role of Coronary Microvascular Dysfunction Current Insights, Diagnostic Advances, And Therapeutic Uncertainties. International Journal of Cardiovascular Sciences 2026;39:e20250031.

Electronic Document Format (ABNT)

Alexandre, Elizabeth Regina Giunco; Salomão, Isabelle; Neto-Espíndola, Larissa; Penalva, Rafaela; Silva, Mayara Lídia Da; Mesquita, Claudio Tinoco. New Insights Into Ischemic Heart Disease in Women: The Central Role of Coronary Microvascular Dysfunction Current Insights, Diagnostic Advances, And Therapeutic Uncertainties. International Journal of Cardiovascular Sciences, v. 39, e20250031, Jul. 2026.

Electronic Document Format (APA)

Alexandre, E. R. G., Salomão, I., Neto-Espíndola, L., Penalva, R., Silva, M. L. D., & Mesquita, C. T. (2026). New Insights Into Ischemic Heart Disease in Women: The Central Role of Coronary Microvascular Dysfunction Current Insights, Diagnostic Advances, And Therapeutic Uncertainties. International Journal of Cardiovascular Sciences, 39, e20250031.

Electronic Document Format (ISO)

Alexandre, Elizabeth Regina Giunco and Salomão, Isabelle and Neto-Espíndola, Larissa and Penalva, Rafaela and Silva, Mayara Lídia Da and Mesquita, Claudio Tinoco. New Insights Into Ischemic Heart Disease in Women: The Central Role of Coronary Microvascular Dysfunction Current Insights, Diagnostic Advances, And Therapeutic Uncertainties. International Journal of Cardiovascular Sciences [online]. 2026, vol. 39, [cited 2026-10-14], e20250031. Available from: <https://journals.cardiol.br/en/article/new-insights-into-ischemic-heart-disease-in-women-the-central-role-of-coronary-microvascular-dysfunction-current-insights-diagnostic-advances-and-therapeutic-uncertainties/>. ISSN 2359-4802

EndNote RIS

Electronic Document Format (Vancouver)

Nunes MCP. Coronary Microvascular Dysfunction: Does it Really Matter in Chagas Disease?. Arquivos Brasileiros de Cardiologia 2021;115(6):1102-3.

Electronic Document Format (ABNT)

Nunes, Maria do Carmo Pereira. Coronary Microvascular Dysfunction: Does it Really Matter in Chagas Disease?. Arquivos Brasileiros de Cardiologia, v. 115, n. 6, p. 1102-1103, Jan. 2021.

Electronic Document Format (APA)

Nunes, M. C. P. (2021). Coronary Microvascular Dysfunction: Does it Really Matter in Chagas Disease?. Arquivos Brasileiros de Cardiologia, 115(6), 1102-1103.

Electronic Document Format (ISO)

Nunes, Maria do Carmo Pereira. Coronary Microvascular Dysfunction: Does it Really Matter in Chagas Disease?. Arquivos Brasileiros de Cardiologia [online]. 2021, vol. 115, n. 6, [cited 2026-10-14], pp. 1102-1103. Available from: <https://journals.cardiol.br/en/article/coronary-microvascular-dysfunction-does-it-really-matter-in-chagas-disease/>. ISSN 0066-782X

EndNote RIS

Electronic Document Format (Vancouver)

Souza Júnior JL, Rodrigues ACT, Buck PC, Guallandro SFM, Mady C. Coronary flow reserve in sickle cell anemia. Arquivos Brasileiros de Cardiologia 2007;88(5):552-8.

Electronic Document Format (ABNT)

Souza Júnior, José Leão de; Rodrigues, Ana Clara Tude; Buck, Paula Cássia; Guallandro, Sandra Fátima Menosi; Mady, Charles. Coronary flow reserve in sickle cell anemia. Arquivos Brasileiros de Cardiologia, v. 88, n. 5, p. 552-558, Jun. 2007.

Electronic Document Format (APA)

Souza Júnior, J. L. , Rodrigues, A. C. T., Buck, P. C., Guallandro, S. F. M., & Mady, C. (2007). Coronary flow reserve in sickle cell anemia. Arquivos Brasileiros de Cardiologia, 88(5), 552-558.

Electronic Document Format (ISO)

Souza Júnior, José Leão de and Rodrigues, Ana Clara Tude and Buck, Paula Cássia and Guallandro, Sandra Fátima Menosi and Mady, Charles. Coronary flow reserve in sickle cell anemia. Arquivos Brasileiros de Cardiologia [online]. 2007, vol. 88, n. 5, [cited 2026-10-14], pp. 552-558. Available from: <https://journals.cardiol.br/en/article/coronary-flow-reserve-in-sickle-cell-anemia/>. ISSN 0066-782X

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