TABLE 1

Preoperative variables

n (%) or mean±sd
Patient characteristics
 Age, years59.7±14.7
 Female114 (76)
 Systemic sclerosis/mixed connective tissue disease54 (36)
 WSPH group
  Group 178 (52.0)
  Group 223 (15.3)
  Group 322 (14.7)
  Group 415 (10.0)
  Group 512 (8.0)
 PAH-specific therapy108 (72.0)
  American Society of Anesthesiologists class
  10 (0.0)
  24 (2.7)
  378 (52.0)
  467 (44.7)
  51 (0.7)
Procedural characteristics
 ACC/AHA risk
  Low110 (73.3)
  Elevated40 (26.7)
 Procedure at JHH123 (82.0)
 Inpatient48 (32.0)
 Emergency9 (6.0)
 Duration >3 h
  Yes42 (28)
  No106 (70.7)
  Unknown2 (1.3)
Preoperative assessments within 3 months of procedure
 PH clinic visit101 (67.3)
 Anaesthesia clinic visit32 (21.3)
 Cardiac anaesthesia review#
  Yes93 (75.6)
  No27 (22.0)
  Unknown3 (2.4)
 WHO FC assessment94 (62.7)
 BNP/pro-BNP82 (54.7)
 Echocardiography79 (52.7)
 6MWT34 (22.7)
 RHC31 (20.7)

WSPH: World Symposium on Pulmonary Hypertension; PAH: pulmonary arterial hypertension; ACC/AHA: American College of Cardiology/American Heart Association; JHH: Johns Hopkins Hospital; PH: pulmonary hypertension; WHO FC: World Health Organization functional class; BNP/pro-BNP: brain natriuretic peptide/pro-brain natriuretic peptide; 6MWT: 6-minute walk test; RHC: right heart catheterisation. #: only among procedures performed at JHH.