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Table 1 Right ventricle assessment variables by primary outcome within 5 days*

From: Intermediate-risk pulmonary embolism: echocardiography predictors of clinical deterioration

 

Clinical deterioration at 5 days

No clinical deterioration (CD)

Overall

p value comparing CD in cases (controls excluded)

 

Case

(N = 115)

Case

(N = 191)

Control

(N = 25)

Case

(N = 306)

Control

(N = 25)

Chamber dimensions

Right ventricle basal width (cm)

 Mean (SD)

4.46 (0.769)

4.20

(0.765)

3.81 (0.700)

4.30 (0.776)

3.81 (0.700)

 

LV basal width (cm)

 Mean (SD)

4.07 (0.837)

4.25

(0.698)

4.54 (0.573)

4.18 (0.757)

4.54 (0.573)

0.0562

 Missing

2 (1.7%)

4 (2.1%)

0 (0%)

6

(2.0%)

0 (0%)

 

Right ventricle mid-width (cm)

 Mean (SD)

3.77 (0.763)

3.43

(0.906)

3.20 (0.819)

3.56 (0.870)

3.20 (0.819)

 < 0.001

 Missing

2 (1.7%)

2 (1.0%)

0 (0%)

4 (1.3%)

0 (0%)

 

RV/LV basal width ratio

 Mean (SD)

1.14 (0.294)

1.02

(0.243)

0.844 (0.123)

1.06 (0.270)

0.844 (0.123)

 < 0.001

 Missing

2 (1.7%)

4 (2.1%)

0 (0%)

6 (2.0%)

0 (0%)

 

Systolic function

Tricuspid annular plane systolic excursion (TAPSE) (cm)

 Mean (SD)

1.56 (0.546)

1.80

(0.517)

2.06 (0.494)

1.71 (0.539)

2.06 (0.494)

 < 0.001

 Missing

7 (6.1%)

5 (2.6%)

0 (0%)

12 (3.9%)

0 (0%)

 

RV free wall systolic excursion velocity S', cm/s

 Mean (SD)

10.4 (3.58)

12.1 (12.5)

14.0 (3.04)

11.4 (10.1)

14.0 (3.04)

0.101

 Missing

9 (7.8%)

14 (7.3%)

1 (4.0%)

23 (7.5%)

1 (4.0%)

 

Right-sided pressure

Estimated PA pressure (mmHg)

 Mean (SD)

47.8

(14.7)

48.0

(19.0)

36.2 (13.4)

47.9 (17.4)

36.2 (13.4)

0.918

 Missing

14

(12.2%)

37

(19.4%)

14 (56.0%)

51 (16.7%)

14 (56.0%)

 

RVSP

 Missing or not detected

14.0 (12.2%)

37.0

(19.4%)

14.0 (56.0%)

51.0 (16.7%)

14.0 (56.0%)

0.093

 Less than 35 mmHg

(# of patients)

17.0 (14.8%)

43.0

(22.5%)

6.00 (24.0%)

60.0 (19.6%)

6.00 (24.0%)

 

 Between 35 and 47.5 mmHg

33.0 (28.7%)

42.0

(22.0%)

3.00 (12.0%)

75.0 (24.5%)

3.00 (12.0%)

 

 Between 47.5 and 56 mmHg

26.0 (22.6%)

29.0

(15.2%)

1.00 (4.0%)

55.0 (18.0%)

1.00 (4.0%)

 

 Greater than 56 mmHg

25.0 (21.7%)

40.0

(20.9%)

1.00 (4.0%)

65.0 (21.2%)

1.00 (4.0%)

 

Laboratory cardiac biomarkers

Initial BNP level (pg/mL)

 Mean (SD)

464 (683)

250 (357)

42.2 (54.8)

329 (512)

42.2 (54.8)

0.003

 Missing

6 (5.2%)

6.00 (3.1%)

0 (0%)

12.0 (3.9%)

0 (0%)

 

Initial troponin level (ng/mL)

 Mean (SD)

0.22 (0.329)

0.25 (0.77)

0.01 (0.014)

0.24 (0.635)

0.01 (0.0139)

0.69

 Median [Min, Max]

0.09 [0, 1.38]

0.04 [0, 6.34]

0

[0, 0.04]

0.06

[0, 6.34]

0 [0, 0.0400]

 

 Missing

54 (47.0%)

98 (51.3%)

5

(20.0%)

152 (49.7%)

5 (20.0%)

 

Initial high-sensitivity troponin, ng/L

 Mean (SD)

270 (448)

228 (1210)

11.1 (5.15)

243 (1000)

11.1 (5.15)

0.75

 Median [Min, Max]

113 [5.00, 2670]

30.5 [0, 12600]

11.0 [6.00, 19.0]

49.0 [0, 12600]

11.0 [6.00, 19.0]

 

 Missing

53 (46.1%)

81 (42.4%)

14 (56.0%)

134 (43.8%)

14 (56.0%)

 

Troponin elevation?

 Elevated

86.0 (74.8%)

105 (55.0%)

3

(12.0%)

191 (62.4%)

3.00 (12.0%)

 < 0.001

 Missing

0 (0%)

0 (0%)

1 (4.0%)

0 (0%)

1 (4.0%)

 
  1. * The American Society of Echocardiography reported that the normal range values involve values within 2 standard deviations of the mean measurement. The following normal ranges of echocardiographic measurements were derived from patients without cardiac or pulmonary disease [16]:
  2. RV basal diameter, 2.5–4.1 cm; RV mid-diameter, 1.9–3.5 cm; RV major length, 5.9–8.3 cm
  3. LV diastolic basal diameter, male: 3.9–5.3 cm; RV/LV basal diameter ratio 0.6; LV ejection fraction 53–73%; tricuspid annular planar systolic excursion (TAPSE), 1.7–3.1 cm; S’: peak systolic velocity, 6.0–13.4 cm/s; and right ventricular systolic pressure (RVSP) 12–16 mmHg
  4. Abbreviations: CD clinical deterioration, abnlRV abnormal right ventricle features, RV right ventricle, LV left ventricle, PA pulmonary artery, RVSP right ventricle systolic pressure, BNP natriuretic peptide