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Table 1 Patient characteristics, physiological variables and PHEA characteristics in adult trauma patients who underwent PHEA in the East of England; 2015–2022

From: Critical hypertension in trauma patients following prehospital emergency anaesthesia: a multi-centre retrospective observational study

Variable

 

Total (n = 1355)

Sex / n (%)

Male

1023 (75.5%)

 

Female

332 (24.5%)

Age group / n (%)

16–34

462 (34.1%)

 

35–54

384 (28.3%)

 

55–74

336 (24.8%)

 

75+

173 (12.8%)

Estimated patient weight / kg, median [IQR]

80 [70–80]

Glasgow Coma Scale (GCS) score / median [IQR]

 

7 [4–11]

GCS motor score / n (%)

1

310 (22.9%)

 

2

99 (7.3%)

 

3

142 (10.5%)

 

4

243 (17.9%)

 

5

293 (21.6%)

 

6

268 (19.8%)

Suspected injury pattern / n (%)

Isolated head injury

706 (52.1%)

 

Head injury + thorax/abdomen

464 (34.2%)

 

No head injury

185 (13.7%)

Trauma type / n (%)

Blunt

1306 (96.4%)

 

Penetrating

49 (3.6%)

Mechanism / n (%)

Transport

737 (54.4%)

 

Accidental Injury

442 (32.6%)

 

Assault

69 (5.1%)

 

Self-harm

66 (4.9%)

 

Sport/leisure

41 (3.0%)

Pre-PHEA Shock index / median [IQR]

 

0.69 [0.54–0.93]

Pre-PHEA SBP / mmHg, n (%)

Low (< 90)

132 (9.7%)

 

Mid (90–140)

688 (50.8%)

 

High (141–180)

Critical (> 180)

417 (30.8%)

118 (8.7%)

Pre-PHEA HR / beats/minute, n (%)

Low (< 60)

120 (8.9%)

 

Mid (60–100)

669 (49.4%)

 

High (> 100)

563 (41.5%)

 

NA

3 (0.2%)

Pre-PHEA RR / breaths/minute, n (%)

Low (< 10)

74 (5.5%)

 

Mid (10–25)

622 (45.9%)

 

High (> 25)

276 (20.4%)

 

NA

383 (28.3%)

Fentanyl dose (mcg kg− 1) / n (%)

0

446 (32.9%)

 

1

398 (29.4%)

 

2

120 (8.9%)

 

3

391 (28.9%)

Ketamine dose (mg kg− 1) / n (%)

0

76 (5.6%)

 

1

733 (54.1%)

 

2

546 (40.3%)

Rocuronium dose (mg kg− 1) / n (%)

0

35 (2.6%)

 

1

1206 (89.0%)

 

2

114 (8.4%)

Indication for PHEA / n (%)

Reduced consciousness

613 (45.2%)

 

Airway obstruction/compromise

280 (20.7%)

 

Agitated head injury

172 (12.7%)

Ventilatory failure

165 (12.2%)

Anticipated clinical course

102 (7.5%)

 

Other

23 (1.7%)

Arrival time to PHEA in minutes / median [IQR]

24 [18–32]

Intubation attempts / n (%)

1

> 1

1231 (90.8%)

124 (9.2%)

Blade type / n (%)

Direct laryngoscope (DL)

Video laryngoscope (VL)

NA

1034 (76.3%)

319 (23.5%)

2 (0.2%)

Pre-PHEA fluids / n (%)

None

988 (72.9%)

Fluids

367 (27.1%)

  1. GCS Glasgow Coma Scale, PHEA prehospital emergency anaesthesia, RSI rapid sequence induction, HR heart rate, SBP systolic blood pressure, RR respiratory rate. The shock index was calculated as HR/SBP. ‘Arrival to PHEA’ is the time in minutes from the Helicopter Emergency Medical Service team arrival on scene until the time of PHEA. Pre-PHEA fluids are intravenous crystalloid administration by the ambulance service before arrival of HEMS