6 Vscan View: The Magazine of Vscan
Is Vscan the Next-Generation Stethoscope?
Cross-Sectional Comparison of Rapidly Acquired
Images with Standard Transthoracic Echocardiography
Although more testing is needed, early indications show
the use of pocket mobile echocardiography (PME) by skilled
ultrasonographers has the potential to provide accurate
cardiovascular assessments in certain cases.
Study exams 97 inpatients and outpatients
Several cardiologists conducted a study at the Scripps Clinic
Torrey Pines and Scripps Green Hospital, La Jolla, California
to assess if physician readers could accurately visualize
some measurements from PME and T TE images. The 23-day
study, which involved a convenience sample of 97 inpatients
and outpatients, compared the accuracy of PME as a quick
assessment for clinical and subclinical cardiovascular disease
with standard TTE by using blinded assessments.
The study, approved by the institutional review board at Scripps
Health, specifically calculated interobserver variability for PME
image interpretation. Clinicians involved included experienced
echocardiographers, as well as cardiology fellows with 2 months
or less of training in echocardiographic interpretation. Patients
for the study were selected according to a “next-available”
model with even-numbered days dedicated primarily to
inpatients and odd-numbered days dedicated primarily to
outpatients, regardless of the indication for the imaging.
Clinicians ordering echocardiography were not aware that
patients referred for T TE would also have PME.
By Max J. Liebo, MD; Rachel L. Israel, MD; Elizabeth O. Lillie, PhD; Michael R. Smith, MD; David S. Rubenson, MD; and Eric J. Topol, MD
Scripps Medical Center, San Diego, California, United States