Skip to main content
. 2015 Apr 3:407–435.e18. doi: 10.1016/B978-1-4557-3383-5.00025-7

Table 25-6.

Poor Cooperation

CHARACTERISTICS OF POOR COOPERATION

  • Decreased vital capacity

  • Relatively normal expiratory airflows (increased FEV1/FVC ratio)

SUPPLEMENTARY RESULTS CONFIRMING PATTERN

  • Decreased total lung capacity

  • Decreased maximal static transpulmonary pressure

  • Uneven, slurred, irregular recording of spirograms

FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity.

Adapted from Welch MH: Ventilatory function of the lungs. In Guenter CA, Welch MH, editors: Pulmonary medicine, Philadelphia, 1977, JB Lippincott, pp 72–123.