Table 2

Diagnostic activity (inpatient and outpatient): baseline activity (green), preparation period (amber), and during the COVID-19 lockdown (red). Percentage reduction refers to the change in data from the baseline period to the periods of lockdown

Interval dates	Prior to COVID-19 (baseline)	Preparation period	First month of COVID-19 lockdown		Second month of COVID-19 lockdown
	21 Jan–20 Feb 2020	21 Feb–20 Mar 2020	21 Mar–20 Apr 2020		21 Apr–20 May 2020
	n	n	n	% reduction	n	% reduction
Investigation
cTnT	691	562	374	46	508	26
NT-proBNP	218	191	55	75	107	51
ECG	199	108	26	87	87	56
IP ECHO	77	85	43	44	56	27
OP ECHO	349	180	127	64	92	74
Ambulatory ECG monitors	172	116	46	73	68	60
ETT	83	67	39	53	37	55
DSE	29	19	8	72	0	100
TOE	11	8	0	100	1	91
CTCA	19	15	7	63	4	79

CTCA, computed tomography coronary angiography; cTnT, cardiac troponin T; DSE, dobutamine stress echocardiogram; ECG, electrocardiogram; ECHO, echocardiogram; ETT, exercise tolerance test; NT-proBNP, N-terminal-pro B-type natriuretic peptide; TOE, transoesophageal echocardiogram.