Automatic Tablet-Based Monoplane Quantification of Stroke Volume and Left Ventricular Ejection Fraction: A Comparative Assessment against Computer-Based Biplane and Monoplane Tools
Male
Heart Ventricles
Point-of-Care Systems
Heart Ventricles/diagnostic imaging
Echocardiography/methods
Ventricular Function, Left
Ventricular Dysfunction, Left
03 medical and health sciences
0302 clinical medicine
Image Interpretation, Computer-Assisted
Ventricular Dysfunction
Computer-Assisted/methods
Ventricular Function
Humans
Image Interpretation
Left/physiopathology
Aged
Computers
Handheld
Left/physiology
Reproducibility of Results
Stroke Volume
point of care ultrasound
Middle Aged
tablet-based
Stroke Volume/physiology
Echocardiography
stroke volume
Computers, Handheld
Female
monoplane cardiac function quantification
handheld ultrasound
Software
DOI:
10.22541/au.172114790.06676467/v1
Publication Date:
2024-07-16T16:38:40Z
AUTHORS (6)
ABSTRACT
AbstractBackgroundPoint‐of‐care cardiovascular left ventricle ejection fraction (LVEF) quantification is established, but automatic tablet‐based stroke volume (SV) quantification with handheld ultrasound (HAND) devices is unexplored. We evaluated a tablet‐based monoplane LVEF and LV volume quantification tool (AutoEF) against a computer‐based tool (Tomtec) for LVEF and SV quantification.MethodsPatients underwent HAND scans, and LVEF and SV were quantified using AutoEF and computer‐based software that utilized either apical four‐chamber views (Auto Strain‐monoplane [AS‐mono]) or both apical four‐chamber and apical two‐chamber views (Auto Strain‐biplane [AS‐bi]). Correlation and Bland–Altman analysis were used to compare AutoEF with AS‐mono and AS‐bi.ResultsOut of 43 participants, eight were excluded. AutoEF showed a correlation of .83 [.69:.91] with AS‐mono for LVEF and .68 [.44:.82] for SV. The correlation with AS‐bi was .79 [.62:.89] for LVEF and .66 [.42:.81] for SV. The bias between AutoEF and AS‐mono was 4.88% [3.15:6.61] for LVEF and 17.46 mL [12.99:21.92] for SV. The limits of agreement (LOA) were [−5.50:15.26]% for LVEF and [−8.02:42.94] mL for SV. The bias between AutoEF and AS‐bi was 6.63% [5.31:7.94] for LVEF and 20.62 mL [16.18:25.05] for SV, with LOA of [−1.20:14.47]% for LVEF and [−4.71:45.94] mL for SV.ConclusionLVEF quantification with AutoEF software was accurate and reliable, but SV quantification showed limitations, indicating non‐interchangeability with neither AS‐mono nor AS‐bi. Further refinement of AutoEF is needed for reliable SV quantification at the point of care.
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