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Table 1 The Physiologic Severity Score (PSS) used for data collection

From: Ketamine for prehospital trauma analgesia in a low-resource rural trauma system: a retrospective comparative study of ketamine and opioid analgesia in a ten-year cohort in Iraq

 

0 points

1 point

2 points

3 points

4 points

Respiratory rate

No breathing

<10

> 35

25–35

10–24

Systolic blood pressure

No pulse

< 50

50–69

70–90

> 90

Consciousness

No response

Only to pain

To sound

Confused

Normal

  1. The rated value (0–4 points) for respiratory rate, systolic blood pressure, and consciousness were combined to create the PSS sum score (0–12 points)