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Table 3 Cardiac arrest characteristics of patients with severe respiratory failure with and without COVID-19

From: Effects of COVID-19 on in-hospital cardiac arrest: incidence, causes, and outcome – a retrospective cohort study

Parameters

All patients

(n = 43)

Severe respiratory failure no-COVID-19

(n = 31)

Severe respiratory failure – COVID-19

(n = 12)

p-value

Demographics

 Age, years median (IQR)

65 (50–75)

65 (50–77)

65 (56–74)

0.565

 Sex, male, n (%)

34 (79)

25 (81)

9 (75)

0.471

 BMI, kg/m2 median (IQR)

27 (24–31)

26 (24–30)

28 (26–33)

0.314

 Charlson comorbidity index, pts. median (IQR)

3 (1.5–6)

4 (2.5–6)

2 (1–2)

0.003

Characteristics of respiratory failure

 Respiratory support (before CA)

  Non-invasive ventilation n (%)

7 (16)

3 (10)

4 (33)

0.125

  Mechanical ventilation n (%)

22 (51)

17 (55)

5 (42)

0.148

 Cause of respiratory failure (at CA)

  Pneumonia n (%)

37 (86)

25 (81)

12 (100)

0.001

  ARDS n (%)

24 (56)

12 (39)

10 (83)

0.000

 Horowitz index (PaO2/FiO2-ratio)

  Worst Horowitz index, mmHg, median (IQR)

84 (57–148)

90 (57–149)

82 (59–107)

0.503

  Horowitz index after CA, mmHg, median (IQR)

97 (76–145)

101 (78–152)

89 (69–19)

0.007

 ARDS Management

  Prone Positioning n (%)

8 (19)

2 (6)

6 (50)

0.437

  Neuromuscular Blockage n (%)

6 (14)

1 (3)

5 (42)

0.306

  Corticosteroids n (%)

11 (26)

4 (13)

7 (58)

0.563

  Inhaled Vasodilators n (%)

9 (21)

3 (10)

6 (50)

0.437

Cardiac arrest Characteristics

Location

   

0.009

  ICU, n (%)

37 (86)

25 (81)

12 (100)

 

  Non-ICU, n (%)

6 (14)

6 (19)

0 (0)

 

Initial Rhythm - Shockable (VT/VF), n (%)

6 (14)

6 (19)

0 (0)

0.255

Sustained ROSC, n (%)

40 (93)

28 (90)

12 (100)

0.364

Epinephrine – total dose, mg, median (IQR)

1 (1–2)

2 (1–2.5)

1 (1–1.3)

0.310

Resuscitation time, min; median (IQR)

  No-Flow

0 (0–0)

0 (0–0)

0 (0–0)

1

  Total resuscitation time

4 (1.8–8.5)

5 (2–10)

1.5 (0.5–3.5)

0.008

Targeted temperature management, n (%)

10 (23)

8 (26)

2 (17)

0.339

E-CPR, n (%)

0 (0)

0 (0)

0 (0)

1

ICU – Characteristics

Severity of illness

  SAPS II (pts.) median (IQR)

44 (36–52)

42 (35–49)

50 (40–56)

0.485

  SOFA – after CA (pts.) median (IQR)

14 (12–16)

14 (12–17)

15 (13–16)

0.202

  SOFA – 24 h after CA (pts.) median (IQR)

13 (11–16)

13 (11–15)

14 (10–16)

0.145

Lab values – post CA median (IQR)

  Lactate – highest after CA, mmol/l

4.6 (1.6–8.5)

4.8 (1.5–10)

4.2 (3.1–4.8)

0.765

  pH – lowest after CA

7.21 (7.15–7.32)

7.22 (7.06–7.32)

7.2 (7.19–7.3)

0.889

Procedures/Complications – post CA

  Vasopressor therapy, n (%)

40 (93)

29 (94)

11 (92)

0.505

  Renal replacement therapy, n (%)

22 (51)

12 (39)

10 (83)

0.009

  Coronary angiography, n (%)

0 (0)

0 (0)

0 (0)

1

  Hypoxic liver injury, n (%)

11 (26)

7 (23)

4 (33)

0.201

  Cholestasis – bilirubin > 2 mg/dl, n (%)

15 (58)

10 (32)

5 (42)

0.190

  1. Abbreviations: CA Cardiac arrest; cm Centimeter; E-CPR Extracorporeal cardiopulmonary resuscitation; ICU Intensive care unit; IQR Inter quartile range; kg Kilogram; n Number; min Minute; mg Milligram; mmol/l Millimole per liter; pts. Points; ROSC Return of spontaneous circulation; SAPS Simplified Acute Physiology Score; SOFA Sequential Organ Failure Assessment; VF Ventricular Fibrillation; VT Ventricular Tachycardia; MAP Mean arterial pressure; COVID-19 Coronavirus disease 2019; IHCA In-hospital cardiac arrest; BMI Body mass index