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Table 3 Plasma concentrations of artesunate and dihydroartemisinin on day-0 (pre-treatment) and at 1 and 6 hours after treatment in patients with sensitive response and recrudescence.

From: Declining in efficacy of a three-day combination regimen of mefloquine-artesunate in a multi-drug resistance area along the Thai-Myanmar border

Drug/Day of treatment

Sensitive response

Recrudescence response

 

N

Mean (95%CI)* or Median (95% CI)**

N

Mean (95%CI)* or Median (95% CI)**

Artesunate:

Day 0**

90

0

35

0

Hour 1*

65

344 (312-375)

30

323 (282-364)

Hour 6**

64

1 (0-1,253)

30

0 (0-12)

Dihydroartemisinin:

Day 0**

90

0 (0-10)

35

0

Hour 1*

65

525 (452-599)

30

456 (215-875)a

Hour 6**

64

98 (13-220)

30

100 (0-220)

  1. a = Statistically significantly lower than patients with sensitive response (student t-test; p < 0.001)