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Multiple hyperbaric exposures during pregnancy in sheep. 1981

M J Nemiroff, and J R Willson, and T H Kirschbaum

Eleven sheep were subjected to hyperbaric comparable to 165 feet of sea water 31 times between the one hundred twelfth and one hundred thirty-seventh days of pregnancy. During 13 dives the maternal and fetal circulations were monitored for bubble formation during decompression. Bubbles were detected by external doppler probes in eight of 12 ewes, but in none of the fetuses. Nine ewes were delivered of normal lambs at term. In one, twin fetuses died during an abnormal labor. The pregnancy of another was terminated by cesarean section after decompression to look for bubbles in the fetal circulation.

UI MeSH Term Description Entries
D008954 Models, Biological Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment. Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011270 Pregnancy, Animal The process of bearing developing young (EMBRYOS or FETUSES) in utero in non-human mammals, beginning from FERTILIZATION to BIRTH. Animal Pregnancies,Animal Pregnancy,Pregnancies, Animal
D003665 Decompression Sickness A condition occurring as a result of exposure to a rapid fall in ambient pressure. Gases, nitrogen in particular, come out of solution and form bubbles in body fluid and blood. These gas bubbles accumulate in joint spaces and the peripheral circulation impairing tissue oxygenation causing disorientation, severe pain, and potentially death. Bends,Caisson Disease,Caisson Diseases,Disease, Caisson,Diseases, Caisson,Sickness, Decompression
D004242 Diving An activity in which the organism plunges into water. It includes scuba and bell diving. Diving as natural behavior of animals goes here, as well as diving in decompression experiments with humans or animals. Divings
D005260 Female Females
D005315 Fetal Diseases Pathophysiological conditions of the FETUS in the UTERUS. Some fetal diseases may be treated with FETAL THERAPIES. Embryopathies,Disease, Fetal,Diseases, Fetal,Embryopathy,Fetal Disease
D005333 Fetus The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN. Fetal Structures,Fetal Tissue,Fetuses,Mummified Fetus,Retained Fetus,Fetal Structure,Fetal Tissues,Fetus, Mummified,Fetus, Retained,Structure, Fetal,Structures, Fetal,Tissue, Fetal,Tissues, Fetal
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001274 Atmospheric Pressure The pressure at any point in an atmosphere due solely to the weight of the atmospheric gases above the point concerned. Atmospheric Pressures,Pressure, Atmospheric,Pressures, Atmospheric

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