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Table 1 Included patients’ general characteristics according to ICU survival status

From: Critically ill severe hypothyroidism: a retrospective multicenter cohort study

Characteristic

Total

ICU survivors

ICU nonsurvivors

p

 

(n = 82)

(n = 61)

(n = 21)

 

At ICU admission

 Age (years)

70 (59–78)

68 (58–76)

77 (70–81)

0.015

 Female

61 (74)

47 (77)

14 (67)

0.391

 SAPS II

55 (45–70)

53 (42–66)

61 (55–88)

0.005

 Charlson score

3 (1–5)

3 (1–4)

4 (3–7)

0.013

 SOFA score

8 (6–12)

7 (5–11)

12 (8–13)

0.001

  Cardiovascular

3 (0–4)

1 (0–4)

4 (4–4)

< 0.001

  Respiratory

1 (0–2)

1 (0–2)

2 (1–3)

0.001

  Neurological

3 (2–4)

3 (2–4)

4 (1–4)

0.705

 De novo hypothyroidism

44 (54)

32 (52)

12 (57)

0.802

Etiology

0.883

 Primary

76 (93)

56 (92)

20 (95)

 

  Thyroidectomy

16 (19)

13 (21)

3 (14)

 

  Thyroiditis

24 (29)

16 (26)

8 (38)

 

  Graves’ disease

1 (1)

1 (2)

  

  Atrophic thyroiditis

1 (1)

1 (2)

  

  Congenital

1 (1)

1 (2)

  

  Unknown

20 (24)

16 (26)

4 (19)

 

 Central

6 (7)

5 (8)

1 (5)

 

Trigger

0.726

 Levothyroxine discontinuation

23 (28)

17 (28)

6 (29)

 

 Sepsis

12 (15)

9 (15)

3 (14)

 

 Amiodarone

9 (11)

5 (8)

4 (19)

 

 Drug-induced hypothyroidism*

5 (6)

4 (7)

1 (5)

 

 Unknown

33 (40)

26 (43)

7 (33)

 

Diagnostic score for myxedema comaa

65 (50–75)

65 (50–75)

70 (50–75)

0.63

TSH (mIU/L)

51.0 (17.5–94.5)

44.0 (17.2–90.0)

63.0 (29.8–100.0)

0.281

FT3 (pmol/L)

1.3 (0.0–2.2)

1.3 (0.5–2.1)

0.1 (0.0–2.2)

0.451

FT4 (pmol/L)

2.7 (0.0–7.5)

3.0 (0.2–7.8)

0.9 (0.0–4.9)

0.247

  1. Results are expressed as median (interquartile range) or n (%)
  2. SAPS II Simplified Acute Physiology Score II, ICU intensive care unit, SOFA Sequential Organ-Failure Assessment, TSH thyroid-stimulating hormone, FT3 free triiodothyronine, FT4 free thyroxine
  3. * Drug-induced hypothyroidism included 1 case secondary to an immune checkpoint inhibitor and 1 secondary to a tyrosine kinase inhibitor
  4. aAccording to Popoveniuc et al., the previously proposed diagnostic scoring system for myxedema coma include a composite of alterations of thermoregulatory, central nervous, cardiovascular, gastrointestinal, and metabolic systems, and presence or absence of a precipitating event