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Table 2 Mean values of measured and calculated variables in Study 1.

From: Analysis of ventilatory ratio as a novel method to monitor ventilatory adequacy at the bedside

 

Mandatory mode

Spontaneous mode

P value

VR

1.9 (0.8 - 5.4)

2.09 (0.9 - 4.2)

0.15

VD/VT

0.62 (± 0.13)

0.59 (± 0.12)

0.10

V Ë™ C O 2 (mL.min-1)

186 (± 57.3)

219 (± 68.2)

< 0.01

V Ë™ E (mL.min-1)

10.3 (± 3.3)

13.1 (± 4.3)

< 0.01

P a C O 2 (kPa)

6.1 (± 1.34)

5.3 (± 1.51)

< 0.01

  1. P values were derived using unpaired t test. The parentheses adjacent to VR represent range of values. All other parentheses are standard deviation. VR, ventilatory ratio; VD/VT, physiological dead space fraction; V Ë™ C O 2 , CO2 production, V Ë™ E , minute ventilation; PaCO2, partial pressure of carbon dioxide in arterial blood.
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Critical Care

ISSN: 1364-8535