Recorded variables for demographics, blood work, comorbid conditions, haemodynamics and ventilation with means and SDs or medians and IQRs for continuous variables and number and percentage for categorical variables
| Variable | All (valid data) | Normal RV (55) | Abnormal RV (62) | P value |
| Demographics | ||||
| Age at admission, years, mean (±SD) | 66.9 (±16.5) [120] | 66.0 (±14.7) [55] | 68.0 (±17.7) [62] | 0.5 |
| Gender, male, number (%) | 81 (67%) [120] | 41 (75%) [55] | 38 (61%) [62] | 0.126 |
| Ethnicity, white, number (%) | 33 (28%) [120] | 12 (22%) [55] | 20 (32%) [62] | 0.266 |
| BMI (kg/m2), mean (±SD) | 25.8 (±6.6) [113] | 26.0 (±5.4) [51] | 25.1 (±6.5) [60] | 0.241 |
| Day of echo from admission, median (IQR) | 6.0 (13) [120] | 6.0 (14) [55] | 6.5 (11) [62] | 0.928 |
| Blood biomarkers | ||||
| First troponin T (ng/L) (normal range 0–15), median (IQR) | 33 (70) [79] | 39 (80) [41] | 31(69)[38] | 0.385 |
| First NT-proBNP (ng/L), median (IQR) | 4327 (7823) [51] | 1483 (4988) [18] | 6688 (10393) [33] | 0.006 |
| First D-dimer (μg/L) (normal range 0–500), median (IQR) | 3380 (11428) [62] | 2885 (8113) [28] | 4850 (18710) [33] | 0.213 |
| First ferritin (μg/L) (normal range 30–400), median (IQR) | 785 (1659) [78] | 955 (1290) [38] | 512 (1766) [40] | 0.134 |
| Comorbid conditions | ||||
| Hypertension, n (%) | 66 (55%) [120] | 29 (53%) [55] | 36 (58%) [62] | 0.562 |
| Diabetes, n (%) | 59 (49%) [120] | 30 (55%) [55] | 27 (44%) [62] | 0.235 |
| Cardiovascular disease, n (%) | 39 (33%) [120] | 16 (29%) [55] | 21 (34%) [62] | 0.579 |
| Cerebrovascular disease, n (%) | 23 (19%) [120] | 11 (20%) [55] | 11 (18%) [62] | 0.755 |
| Cancer, n (%) | 15 (13%) [120] | 6 (11%) [55] | 9 (15%) [62] | 0.56 |
| Chronic kidney disease, n (%) | 20 (17%) [120] | 10 (18%) [55] | 10 (16%) [62] | 0.768 |
| Respiratory disease, n (%) | 37 (31%) [120] | 13 (24%) [55] | 22 (36%) [62] | 0.162 |
| Haemodynamics prior to echocardiogram | ||||
| Tachycardia>100 beats/min, n (%) | 84 (76%) [110] | 35 (70%) [50] | 46 (81%) [57] | 0.198 |
| Tachypnoea>30 breaths/min, n (%) | 53 (49%) [109] | 25 (51%) [49] | 28 (49%) [57] | 0.846 |
| O2 saturations<95%, n (%) | 90 (82%) [110] | 38 (76%) [50] | 49 (86%) [57] | 0.187 |
| Systolic blood pressure<90 mm Hg, n (%) | 20 (18%) [110] | 7 (14%) [50] | 13 (23%) [57] | 0.244 |
| Admission heart rate (beats/min), mean (±SD) | 101 (±21)[106] | 100 (±24) [51] | 101 (±19) [52] | 0.723 |
| Admission respiratory rate (breaths/min), mean (±SD) | 30 (±10) [105] | 30 (±11) [50] | 30 (±10) [52] | 0.608 |
| Admission saturations on air (%), mean (±SD) | 88 (±12) [101] | 89 (±13) [47] | 88 (±12) [51] | 0.397 |
| Admission systolic blood pressure, mm Hg, mean (±SD) | 132 (±24) [105] | 134 (±26) [50] | 131 (±24) [52] | 0.466 |
| Ventilation | ||||
| Ventilated patients, n (%) | 49 (41.2%) [119] | 22 (40.7%) [54] | 26 (42%) [62] | 0.896 |
Number in square bracket records total number of patients.
BMI, body mass index; NT-proBNP, N-terminal pro B-type natriuretic peptide; RV, right ventricular.