title: Evaluation of P a-A CO2, P A-a O2 and VD/VT measurements during controlled respiration in children. Preliminary communication.
abstract: The indices of P a-A CO2, P A-a O2 and VD/VT were evaluated in a group of children treated with controlled ventilation (IPPV) for: pneumonia, congenital heart disease, respiratory distress syndrome or central nervous system diseases. The P A-a O2 index is regarded as the most useful one, since it enables the possibility to select a F IO2 value for obtaining an optimal P aO2. For calculation of VD/VT according to Bohr's formula during connection of the child to respirator P ECO2 was determined planimetrically from the capnographic curve. P a-A CO2 was recognized as a less useful index and difficult to interpret.
mesh_terms: D000293:Adolescent; D002245:Carbon Dioxide / Q000097:blood* / Q000378:metabolism; D002493:Central Nervous System Diseases / Q000150:complications; D002648:Child; D002675:Child, Preschool; D006330:Heart Defects, Congenital / Q000150:complications; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007384:Intermittent Positive-Pressure Breathing; D008176:Lung Volume Measurements; D010100:Oxygen / Q000097:blood*; D010101:Oxygen Consumption; D011014:Pneumonia / Q000150:complications; D011175:Positive-Pressure Respiration; D011650:Pulmonary Alveoli / Q000378:metabolism; D012126:Respiratory Dead Space; D012127:Respiratory Distress Syndrome, Newborn / Q000150:complications; D012131:Respiratory Insufficiency / Q000209:etiology / Q000628:therapy; D013990:Tidal Volume
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen