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Table 6 Summary of clinical trials on intra-arrest hypothermia (IATH) during cardiac arrest

From: Intra-arrest hypothermia during cardiac arrest: a systematic review

 

Setting

Method

Pts

CTRL

VF/VT (%)

Δt at admission

Δt vs CTRL

ROSC

Hospital admission

Survival all patients

Survival admitted pts

Callaway [19]

OHCA

Cranial cooling

22

Y (NT)

41

-0.02°C/min

NS

IATH 33%

CTRL 0%

IATH 66%

CTRL 15%

IATH 0%

CTRL 0%

IATH 0%

CTRL 0%

Bruel [15]

OHCA

Cold iv fluids

33

N

24

- 2.1°C

NA

61%

61%

12%

20%

Kämärainen [20]

OHCA

Cold iv fluids

17

N

59

-1.34°C

NA

71%

64%

6%

9%

Castrén [16]

OHCA

Trans-nasal

194

Y (PATH)

30

-1.3°C (tymp)

-0.7°C (core)

- 1.3°C (tymp)

IATH 38%

CTRL 43%

IATH 36%

CTRL 42%

IATH 15%

CTRL 13%

IATH 44%

CTRL 31%

Garrett [18]

OHCA

Cold iv fluids

542

Y (NT)

22

NA

NA

IATH 37%

CTRL 27%

IATH 28%

CTRL 23%

IATH 13%

CTRL 12%

IATH 44%

CTRL 51%

  1. Δt, difference in temperature; CTRL, control group; iv, intravenous; NA, not applicable/available; N, no; NS, not significant; NT, normothermia; OHCA, out-of-hospital cardiac arrest; PATH, conventional (post-arrest) hypothermia; Pts., patients; ROSC, return of spontaneous circulation; tymp, tympanic; VF, ventricular fibrillation; VT, ventricular tachycardia; Y, yes