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Color Doppler imaging of the ophthalmic artery in patients with chronic heart failure

Daniela B Almeida-Freitas1, Daniel Meira-Freitas, Luiz Alberto Soares de Melo

  • 1Imaging Diagnosis Department, Universidade Federal de São Paulo, Brazil. freitas.daniel@gmail.com

Arquivos Brasileiros De Oftalmologia
|December 21, 2011
PubMed

Insights

Patients with chronic heart failure exhibit altered ophthalmic artery hemodynamics, including lower diastolic velocity and higher resistance index. These changes may indicate orbital vasoconstriction due to reduced cardiac output.

Area of Science:

  • Ophthalmology
  • Cardiology
  • Medical Imaging

Background:

  • Chronic heart failure (CHF) can lead to systemic circulatory changes.
  • Ophthalmic artery hemodynamics may be affected by reduced cardiac output in CHF patients.

Purpose of the Study:

  • To evaluate ophthalmic artery hemodynamics in patients with chronic heart failure.
  • To compare Doppler parameters of the ophthalmic artery between CHF patients and healthy controls.

Main Methods:

  • Doppler ultrasonography was used to assess ophthalmic artery parameters in 18 CHF patients and 21 healthy volunteers.
  • Ophthalmic artery parameters were correlated with echocardiographic and clinical cardiologic data.

Main Results:

  • CHF patients showed significantly lower mean diastolic velocity (5.14 vs 7.44 cm/s, p=0.007) and higher mean resistance index (0.76 vs 0.70, p=0.04) in the ophthalmic artery compared to controls.
  • Ophthalmic artery resistance index negatively correlated with systemic blood pressure (r=-0.47, p=0.007), while diastolic velocity positively correlated (r=0.44, p=0.02).

Conclusions:

  • Chronic heart failure is associated with reduced diastolic velocity and increased resistance index in the ophthalmic artery.
  • These hemodynamic alterations suggest potential orbital vasoconstriction in CHF patients, possibly linked to low cardiac output.
  • Further research is warranted to investigate the impact on optic nerve head structure and function.
Abstract

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