Change in total procedure volumes by procedure type. Clustered bar graphs
show the total procedure volumes for March 2019 (blue), April 2020
(red), and April 2021 (gray) by procedure type for U.S., non-U.S., and
NUHIC facilities. Percentage change values represent the change in total
summed procedures of all individual facilities in each category (in
contrast to the median of the individual percentage change values shown
in the central illustration) from 2019 to 2020 (bottom bracket) and 2019
to 2021 (top bracket). Nuclear stress testing includes stress SPECT and
stress PET. PET infection testing is not shown in the figure because of
the small sample size. CAC = coronary artery calcium, CCTA = coronary CT
angiography, ECG = electrocardiography, Echo = echocardiography, ICA =
invasive coronary angiography, NUHIC = non-U.S. high-income country, TEE
= transesophageal echocardiography, TTE = transthoracic
echocardiography.