1 Department of Pediatrics, Harbor General Hospital, Torrance, and St. Mary's Long Beach Hospital, Long Beach, California/UCLA School of Medicine
The effects of rapid intravascular infusion of 0.9 M sodium bicarbonate were evaluated in 18 full-term and premature newborn infants who had predominant metabolic acidosis associated with respiratory distress. During the 30-minute postinfusion period, the hematocrit fell at three minutes from 50% to 45% (p = < .001), and returned to 46.5% at 30 minutes (p = < .02); the serum sodium rose from 135 mEq/liter to 141 mEq/liter (p = < .05) at three minutes and then returned to 136 mEq/liter at 30 minutes; the osmolality increased from 278 mOsm/liter to 287 mOsm/liter at three minutes (p = < .001) and returned to 281 mOsm/liter at 30 minutes; and the arterial blood pressure rose from a baseline of 46.8 mm Hg to 48 mm Hg at One minute (p = < .05), dropped below the baseline at 15 minutes (p = < .05), and rose almost to the baseline at 30 minutes. These results suggest that rapid intravascular infusion of hypertonic sodium bicarbonate may lead to an increase in intravascular volume. No significant clinical symptoms related to central nervous system insults were observed.
Submitted on September 22, 1972
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