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Table 1 Patient demographics and pre-PHEA physiological variables, presented as a total cohort (n = 674), those with a physician and those with a critical care paramedic as the initial operator

From: Intubation success in prehospital emergency anaesthesia: a retrospective observational analysis of the Inter-Changeable Operator Model (ICOM)

Variable

Overall

Physician initial operator

CCP initial operator

p value

Patients (n (%))

674

571 (84.7%)

103 (15.3%)

 < 0.0001***

Age (years)

44.0 [28.0–63.0]

44.0 [28.5–62.0]

40.0 [27.8–64.8]

0.94

Estimated weight (kg)

75.0 [70.0–80.0]

80.0 [70.0–85.0]

70.0 [70.0–80.0]

 < 0.05*

Male sex (n (%))

502 (74.5%)

426 (74.6%)

76 (73.8%)

0.90

Entrapped (n (%))

100 (14.8%)

90 (15.8%)

10 (9.7%)

0.13

Pre-PHEA variables

HR (beats/min)

99.7 (± 29.0)

101.0 (± 29.4)

91.5 (± 25.0)

 < 0.0001***

SBP (mmHg)

134.4 (± 35.1)

134.0 (± 34.7)

137.2 (± 37.3)

0.48

MAP (mmHg)

100.3 (26.1)

100.0 (± 26.4)

101.9 (± 24.4)

0.58

RR (breaths/min)

22.1 (± 14.1)

22.2 (± 11.9)

21.6 (± 23.5)

0.83

Shock Index

0.81 (± 0.45)

0.83 (± 0.47)

0.70 (± 0.26)

 < 0.0001***

Non-entrapped patients

Patients (n (%))

574

481 (83.8%)

93 (16.2%)

 

Arrive to PHEA (min)

19.0 [14.0–26.0]

20.0 [14.0–27.0]

18.0 [12.0–24.0]

 < 0.05*

  1. CCP critical care paramedic, PHEA prehospital emergency anaesthesia, HR heart rate, SBP systolic blood pressure, MAP mean arterial pressure, RR respiratory rate. The shock index was calculated as HR/SBP. ‘Arrive to PHEA’ is the time in minutes from the HEMS team arrival on scene until the time of PHEA