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  • Title: Fetal development in mice exposed to isoflurane.
    Author: Mazze RI, Wilson AI, Rice SA, Baden JM.
    Journal: Teratology; 1985 Dec; 32(3):339-45. PubMed ID: 4082064.
    Abstract:
    The developmental toxicity of trace (0.006%), subanesthetic (0.06%), and light anesthetic (0.6%) exposure to isoflurane was examined in Swiss/Webster mice. No adverse effects were demonstrated following exposure of dams to 0.006% (n = 26) and 0.06% (n = 27) isoflurane for 4 hr daily on days 6-15 of pregnancy. Exposure to 0.6% isoflurane (n = 23) for the same period resulted in significantly decreased fetal weight, decreased skeletal ossification, minor hydronephrosis, and increased renal pelvic cavitation. The incidence of cleft palate also was significantly increased, abnormalities occurring in 12.1% of fetuses and affecting 11 of 23 litters. This incidence was considerably higher than that of the combined treatment and colony control groups (0.75%) and those that we have found in previous experiments with this mouse strain following exposure to halothane (1.2%) or enflurane (1.9%).
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