Problems of commercially available heparinized syringes in measurements of blood gases and electrolytes
Kinoshita, H.; Fukuda, S.; Ataka, T.; Watanabe, I.; Shimoji, K.
Masui. Japanese Journal of Anesthesiology 44(11): 1563-1567
1995
ISSN/ISBN: 0021-4892 PMID: 8544299 Document Number: 448223
We compared the measured values of blood gases and electrolytes by commercially available heparinized syringes (PZ-II, Quick-lite and QS90) with normal and decreased calcium concentrations. With normal calcium concentration, the measured value of (Ca-2+) in PZ-II was significantly less than that in Quick-lite and QS90, seemingly due to contained heparin. With hypocalcemia, the measured values of (Ca-2+) in Quick-lite and QS90 were significantly greater than those in nonheparinized syringe. The pH and PO-2 decreased, and PCO-2 increased as time passed. The (Ca-2+) was suggested to be more influenced by heparin than by acid-base balance.