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Table 3 Factors associated with sampling failure

From: Earlobe arterialized capillary blood gas analysis in the intensive care unit: a pilot study

Univariate analysis

RR

P

(CI 95%)

  Age > 65 years

1.9

0.04a

(1 to 3.7)

  Diabetes mellitus

1.9

0.03a

(1.1 to 3.4)

  Vasoactive treatment

2

0.06

(0.9 to 4.5)

  Vasoconstrictor treatment

1.7

0.09

(0.8 to 3.5)

  NE > 0.22 μg/kg/min

2.4

0.02a

(1 to 5.7)

  Sepsis

1.4

0.26

(0.7 to 2.7)

  Lactate > 22 mg/dl

1.4

0.38

(0.7 to 3)

  MAP (< 65 or > 90 mmHg)

0.8

0.57

(0.4 to 1.6)

Multivariate analysis

OR

P

(CI 95%)

  Age > 65 years

1.6

0.05a

(0.99 to 2.6)

  Diabetes mellitus

2.4

0.17

(0.7 to 8.2)

  Vasoactive treatment

2.5

0.17

(0.7 to 8.9)

  1. MAP, mean arterial pressure; NE, norepinephrine; OR, odds ratio; RR, relative risk.
  2. aStatistically significant.