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Table 2 Evolution of hemodynamic profile during daily transesophageal echocardiography assessments of COVID-19 patients ventilated for ARDS

From: Cardiovascular phenotypes in ventilated patients with COVID-19 acute respiratory distress syndrome

 

Day 1 (n = 18)

Day 2 (n = 10)

Day 3 (n = 12)

p value

Respiratory parameters

 PaO2/FiO2

130 (81–217)

128 (100–210)

137 (98–187)

0.066

 PaCO2, mmHg

44 (33–51)

50 (32–56)

47 (37–57)

0.964

 RR, breaths/min

24 (22–27)

27 (20–28)

24 (24–30)

0.651

 PEEP, cmH2O

10 (8–12)

10 (8–13)

10 (10–12)

0.444

 Plateau pressure, cmH2O

23 (20–26)

22 (18–27)

24 (21–27)

0.127

 Driving pressure, cmH2O

12 (10–15)

11 (9–12)

13 (11–17)

0.368

 Tidal volume, mL/kg

5.2 (4.5–6.2)

5.3 (4.6–6.6)

5.5 (4.3–6.7)

0.210

 Respiratory-system compliance*, mL/cmH2O

38 (31–45)

33 (33–53)

37 (28–45)

0.692

Hemodynamic parameters

 Heart rate, bpm

90 (72–109)

93 (78–107)

98 (89–104)

0.368

 CVP, mmHg

9 (7–10)

7 (6–10)

9 (5–13)

0.678

 Mean blood pressure, mmHg

102 (85–110)

105 (87–110)

95 (84–109)

0.102

 Lactate, mmol/L

1.17 (0.89–1.57)

1.85 (1.24–3.01)

1.62 (1.49–1.95)

0.264

Echocardiography indices

 Cardiac index (L/min/m2)**

3.1 (2.5–4.2)

2.8 (2.6–3.9)

4.1 (3.2–4.8)

0.115

 RVEDA/LVEDA

0.55 (0.37–0.60)

0.53 (0.35–0.66)

0.55 (0.48–0.58)

0.549

 RVFAC, %

46 (35–50)

40 (33–46)

40 (32–58)

0.821

 TAPSE, mm

25 (23–29)

24 (20–28)

25 (23–28)

0.368

 Tricuspid S′, cm/s

16.0 (15.0–20.5)

16.1 (14.0–18.1)

16.8 (14.9–19.9)

0.867

 TR peak velocity, m/s

3.2 (2.9–3.6)

3.0 (2.7–3.7)

3.6 (2.4–3.9)

0.060

 IVC diameter, mm

22 (19–26)

24 (14–30)

22 (17–24)

1.000

 LVEF, %

52 (44–61)

46 (41–64)

55 (49–60)

0.549

  1. Abbreviations: RR respiratory rate, PEEP positive end-expiratory pressure, CVP central venous pressure, RVEDA right ventricular end-diastolic area, LVEDA left ventricular end-diastolic area, RVFAC right ventricular fractional area change, TAPSE tricuspid annular plane systolic excursion, TR tricuspid regurgitation, IVC inferior vena cava, LVEF left ventricular ejection fraction
  2. *Calculated as the tidal volume divided by the driving pressure (difference between the inspiratory plateau pressure and positive end-expiratory pressure)
  3. **Measured using the Doppler method applied at the left ventricular outflow tract