Background: We studied in a group of patients admitted for acute severe asthma (ASA) arterial blood gases at admission and it relationship with airway obstruction. We also compared arterial gases of a subgroup of patients unable to perform spirometry because their poor clinical status with those able to complete the test. Methods. Data from arterial gases and spirometry were obtained from two p...

Arterial blood samples from 75 patients were analyzed for PO2, PCO2, and pH at 0, 15, and 30 min. After the baseline analysis, 60 samples were kept in ice while 59 samples were left at room temperature. There was a statistically significant increase in the PO2 at 15 min and again at 30 min in both groups. There was a statistically significant decrease in the PCO2 at 15 min in both groups. There...

performance of at1-antitrypsin levels in individuals on replacement therapy. We would offer that the opposite may be true, particularly in that population receiving monthly replacement therapy. Until such time as delayed clearance from epithelial lining fluid can be shown in those individuals whose nadir serum levels are substantially below protective threshold, we are recommending for our pati...

July, 1974 377 TERIAL blood gases and p11 may reflect the respiratory depression produced by tranquilizing and narcoticanalgesic agents used in premedication before surgical anesthesia. The absence of respiratory depression is one of the desirable qualities of an ideal premedicant or sedative drug. Therefore, it is essential to know if, and to what extent, a particular drug depresses respiratio...

Lipids were extracted from human blood plasma using suband supercritical fluids. An extraction plant was specifically designed to allow the treatment of plasma with compressed propane, dimethyl ether (DME) and nitrous oxide (N2O) as solvents. Experiments were performed using suband supercritical gases as mild solvents to remove the lipid fraction without denaturing valuable proteins or affectin...

Robinson (1) studied the effect of age on the arterial blood gases and the acid-base balance of normal males from 5 to 91 years of age. In addition to the well known increase in oxygen combining capacity which occurs during childhood and adolescence, Robinson found moderately lower mean values for hemoglobin saturation in adults above 40 years of age, and slightly higher mean values for arteria...

A meta-analysis determined whether capillary blood gases accurately reflect arterial blood samples. A mixed effects model was used on 29 relevant studies obtained from a PubMed/Medline search. From 664 and 222 paired samples obtained from the earlobe and fingertip, respectively, earlobe compared to fingertip sampling shows that the standard deviation of the difference is about 2.5x less (or the...

STUDY OBJECTIVES To analyze the short- and long-term effects of domiciliary non-invasive ventilation (NIV) in the elderly. METHODS From 1990 to 2005 all patients who initiated NIV at age 75 or older were included in the study. The mean follow-up period was 36 (24) months. Data were obtained from a database record. RESULTS Forty-three patients, mean age 77 (1.9) years and hypercapnic respira...

We evaluated the analytical performance of the i-STAT Portable Clinical Analyzer (PCA), a point-of-care testing system consisting of a hand-held analyzer and single-use cartridges that measure different panels of electrolytes, metabolites, blood gases, and hematocrit in 65-100 microl of blood. Our objective was to determine whether PCA measurements at the bedside of patients in the neonatal and...