Changes in intrapulmonary shunting with administration of 100 percent oxygen.

Academic Article


  • The effects of increasing the fractional concentration of oxygen in the inspired gas to 1.0 on intrapulmonary shunting (Qsp) was evaluated in 82 intubated cardiovascularly stable patients in intensive care, regardless of airway pressure therapy or preexistent pulmonary pathologic abnormalities. Intrapulmonary shunting following administration of 100 percent oxygen increased in 132 of 140 measurements, decreased in seven, and remained unchanged in one measurement. The direction of change of Qsp with 100 percent oxygen shows no correlation with either airway pressure therapy or preexisting pulmonary disease.
  • Published In

  • Chest  Journal
  • Keywords

  • Adult, Aged, Female, Humans, Intermittent Positive-Pressure Ventilation, Lung, Male, Middle Aged, Oxygen, Positive-Pressure Respiration, Pulmonary Artery, Respiratory Therapy
  • Author List

  • Shapiro BA; Cane RD; Harrison RA; Steiner MC
  • Start Page

  • 138
  • End Page

  • 141
  • Volume

  • 77
  • Issue

  • 2