Table 3.

Impact of the coronavirus outbreak on routine clinic operations

	Relative to the Outbreak
	Before	After
Clinical visits
Typical number of weekly outpatient visits, median (IQR)	30 (20–45)	12 (5–25)
Centers with routine use of formal telephone visits, n (%)	4 (7)	48 (83)
Centers with routine use of video-enabled visits, n (%)	5 (9)	54 (93)
Testing (n = 55 centers responding), n (%)
Centers obtaining fewer echocardiograms	Ref	50 (91)
Of these, centers with 60–99% reduction		30 (60)
Of these, centers with total cessation		5 (10)
Centers obtaining fewer RHCs	Ref	49 (89)
Of these, centers with 60–99% reduction		34 (69)
Of these, centers with total cessation		4 (8)
Centers obtaining fewer CTPAs	Ref	35 (64)
Of these, centers with 60–99% reduction		18 (51)
Of these, centers with total cessation		5 (14)
Centers obtaining fewer $\dot{\mathrm{V}}/\dot{\mathrm{Q}}$ scans	Ref	50 (91)
Of these, centers with 60–99% reduction		23 (46)
Of these, centers with total cessation		12 (24)
Centers that have switched to Q scans only	Ref	21 (38)
Treatment (n = 56 centers responding), n (%)
Centers limiting new oral therapy prescriptions	Ref	10 (18)
Of these, centers with 60–99% reduction		2 (20)
Of these, centers with total cessation		0 (0)
Centers limiting new i.v./s.c. prescriptions	Ref	17 (30)
Of these, centers with 60–99% reduction		5 (29)
Of these, centers with total cessation		3 (18)
Centers with fewer transplant referrals	Ref	15 (27)
Of these, centers with 60–99% reduction		2 (13)
Of these, centers with total cessation		3 (20)

Definition of abbreviations: CTPA = computed tomographic pulmonary angiogram; IQR = interquartile range; i.v. = intravenous; Q = perfusion; Ref = referent; RHC = right heart catheterization; s.c. = subcutaneous; $\dot{\mathrm{V}}/\dot{\mathrm{Q}}$ = ventilation–perfusion.