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Related Concept Videos

Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...
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Imaging Studies for Cardiovascular System II:Types of Echocardiography

Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
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Transthoracic Echocardiography (TTE)
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Endocarditis III: Medical Management

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Endoscopic Ultrasound (EUS):
Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
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Troubleshooting FoCUS Image Acquisition: Patient Positioning, Transducer Manipulation, and Image Optimization
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Published on: March 3, 2023

Continuing medical education program in echocardiography.

Pohoey Fan1, Silvio H Barberato, Marcio Misocami

  • 1Center for Health and Biological Sciences, Pontifica Universidade Catolica do Parana, Curitiba, PR - Brazil.

Echocardiography (Mount Kisco, N.Y.)
|December 17, 2009
PubMed
Summary

Left atrial enlargement is linked to intradialytic hypotension, a common complication during hemodialysis. Diastolic dysfunction plays a key role in these hemodynamic changes, impacting patient outcomes.

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Published on: January 27, 2023

Area of Science:

  • Cardiology
  • Nephrology
  • Cardiovascular Physiology

Background:

  • Intradialytic hypotension (IDH) is a frequent complication during hemodialysis, leading to adverse cardiovascular events.
  • Left atrial enlargement (LAE) is a known marker of cardiovascular disease and may be associated with IDH.
  • Diastolic dysfunction can impair cardiac adaptation to fluid shifts, potentially contributing to hemodynamic instability.

Purpose of the Study:

  • To investigate the association between left atrial enlargement and intradialytic hypotension.
  • To explore the role of diastolic dysfunction in mediating hemodynamic complications during hemodialysis.
  • To identify potential mechanisms linking cardiac structural and functional changes to intradialytic hypotension.

Main Methods:

  • Retrospective analysis of patients undergoing maintenance hemodialysis.
  • Echocardiographic assessment of left atrial size and diastolic function parameters (e.g., E/e').
  • Continuous monitoring of blood pressure during hemodialysis sessions to identify episodes of hypotension.

Main Results:

  • Patients with left atrial enlargement showed a significantly higher incidence of intradialytic hypotension.
  • Impaired diastolic function, particularly elevated E/e', was strongly correlated with the occurrence of IDH in patients with LAE.
  • LAE and diastolic dysfunction were independent predictors of intradialytic hypotension.

Conclusions:

  • Left atrial enlargement is associated with an increased risk of intradialytic hypotension in hemodialysis patients.
  • Diastolic dysfunction is a crucial factor contributing to the hemodynamic instability observed during hemodialysis in patients with LAE.
  • These findings highlight the importance of assessing cardiac structure and function in hemodialysis patients to predict and potentially prevent intradialytic hypotension.