Visual estimation of ejection fraction by two-dimensional echocardiography: the learning curve

Clinical Cardiology
O O AkinboboyeE J Brown

Abstract

Our purpose was to determine the learning curve of visual estimation of ejection fraction (EF) by echocardiography. Sixty consecutive patients, who had clinically indicated echocardiography and radionuclide ventriculography (RVG) within 1 month were selected. Five standard views were reviewed independently by a first-year cardiology fellow, a private cardiologist, and an experienced echocardiographer. Observers were given feedback of the RVG EFs immediately after estimating the EF on each study. To assess the effect of learning, the echocardiographic studies were divided into three groups of 20 and were read successively by each observer. A statistical comparison of the two methods was performed for each group. The correlation between the two techniques for the first group of studies was marginal. There was a significant improvement in the correlation with subsequent groups. The correlation did not change significantly with the last group of studies compared with the second group. In conclusion, visual estimation of EF by two-dimensional echocardiography can be learned, with a learning curve of approximately 20 studies if immediate feed-back is available.

References

Feb 1, 1981·The American Journal of Cardiology·G B CintronJ M Aranda

❮ Previous
Next ❯

Citations

Oct 5, 2010·The International Journal of Cardiovascular Imaging·Cameron J HollowayStefan Neubauer
Sep 3, 2013·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Paaladinesh ThavendiranathanThomas H Marwick
Nov 3, 2011·Echocardiography·Błażej MichalskiPiotr Lipiec
May 11, 2005·International Journal of Cardiology·Petri GudmundssonRonnie Willenheimer
Sep 26, 2015·Journal of the American College of Cardiology·Christian KnackstedtPartho P Sengupta
Jul 22, 2008·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·J P EibergT V Schroeder
Jan 22, 2009·European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology·Steffen P SchoenRuth H Strasser
Dec 3, 2015·Circulation. Cardiovascular Imaging·Sanjeev Bhattacharyya, Guy Lloyd
May 29, 2018·Minerva anestesiologica·Luigi Tritapepe, Giovanni Carriero
Feb 24, 2005·Echocardiography·A M Al-GhamdiD Massel
Jul 30, 2021·Journal of Medical Ultrasonics·Kenya KusunoseMasataka Sata
Apr 24, 2018·Avicenna Journal of Medicine·Rami Mahmood AbazidHaitham Sakr

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.