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Table 2 Analgesic efficacy

From: Intranasal ketamine for acute traumatic pain in the Emergency Department: a prospective, randomized clinical trial of efficacy and safety

 

Time to onset

Minutes (95 % CI)

Non-responders

Patients (%)

Maximal pain reduction

mm on a 100 mm VAS (95 % CI)

Time to max pain reduction

Minutes (95 % CI)

IN Ketamine (n = 24)

14.3 (9.8–18.8)

1 (4 %)

56 mm VAS

40.4 min (33.9–46.9)

IV MO (n = 24)

8.9 (6.6–11.2)

1 (4 %)

59 mm VAS

33.4 min (26.2–40.6)

IM MO (n = 27)

26.0 (20.3–31.7)

3 (11 %)

48 mm VAS

46.7 min (41.1–52.3)

Aggregate

16.7 (13.7–19.7)

5 (6.8 %)

54 mm VAS

40.6 min (36.8–44.4)

P value

IN Ketamine vs. IV MO

0.300

0.611 (DF = 2)

0.300 (DF = 2)

0.386

P value

IN Ketamine vs. IM MO

0.003

 

0.441

P value

IV MO vs. IM MO

0.000

 

0.019

  1. Shows the analgesic efficacy in each group. Significant difference is shown in time to onset (time to ≥15 mm VAS reduction) between both the IN ketamine and IV MO and the IM MO group. IN Ketamine and IV MO were not different. There was no difference in the non-responder rate, nor significance in the maximal pain reduction between IN ketamine and opiate controls