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The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
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The heart beats rhythmically in a sequence called the cardiac cycle—a rapid coordination of contraction (systole) and relaxation (diastole).
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The cardiac cycle refers to the sequence of events that occur in the heart from the beginning of one heartbeat to the next. It's characterized by alternating periods of contraction (systole) and relaxation (diastole) of the heart muscles.
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Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
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The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
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Related Experiment Video

Updated: Dec 18, 2025

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
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Left atrial function in diabetes: does it help?

Marijana Tadic1, Cesare Cuspidi2,3

  • 1University Hospital "Dr. Dragisa Misovic - Dedinje, Department of Cardiology", Heroja Milana Tepica 1, Belgrade, 11000, Serbia. marijana_tadic@hotmail.com.

Acta Diabetologica
|June 11, 2020
PubMed
Summary
This summary is machine-generated.

Left atrial remodeling significantly impacts diabetic cardiomyopathy and cardiovascular outcomes in diabetes patients. Assessing left atrial phasic function is crucial for predicting heart disease progression in this population.

Keywords:
DiabetesLeft atriumPhasic functionStrain

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Area of Science:

  • Cardiology
  • Diabetology
  • Medical Imaging

Background:

  • Diabetic cardiomyopathy involves left atrial (LA) structural and functional changes.
  • LA remodeling is a key prognostic indicator in diabetes mellitus (DM) patients.
  • Atrioventricular coupling, influenced by LA function, predicts cardiovascular events in DM.

Purpose of the Study:

  • To review current knowledge on LA phasic function in patients with diabetes.
  • To highlight the prognostic significance of LA dysfunction in DM.
  • To discuss methods for assessing LA phasic function in DM.

Main Methods:

  • Review of existing literature on LA phasic function in DM.
  • Discussion of volumetric and strain imaging techniques for LA function assessment.
  • Analysis of the relationship between LA function, cardiovascular outcomes, and glycemic control.

Main Results:

  • LA dysfunction is hypothesized to be prevalent in DM, linked to high rates of atrial fibrillation and heart failure.
  • LA phasic function (reservoir, conduit, contractile) failure can lead to adverse cardiac events.
  • LA function is an independent predictor of cardiovascular outcomes and correlates with glycemic control in DM.

Conclusions:

  • Accurate assessment of LA phasic function is vital for managing cardiovascular risk in diabetes.
  • Both volumetric and strain methods offer valuable insights into LA function in DM.
  • Understanding LA function can guide therapeutic strategies to improve cardiovascular outcomes in diabetic patients.