Obstetric Labor -- See Labor, Obstetric The repetitive uterine contraction during childbirth which is associated with the progressive dilation of the uterine cervix (CERVIX UTERI). Successful labor results in the expulsion of the FETUS and PLACENTA. Obstetric labor can be spontaneous or induced (LABOR, INDUCED).
Obstetrical Analgesia -- See Analgesia, Obstetrical The elimination of PAIN, without the loss of CONSCIOUSNESS, during OBSTETRIC LABOR; OBSTETRIC DELIVERY; or the POSTPARTUM PERIOD, usually through the administration of ANALGESICS.
Obstetrical Nursing -- See Obstetric Nursing A nursing specialty involving nursing care given to the pregnant patient before, after, or during childbirth.
Obstetrical Nursing Methods : High-risk & critical care obstetrics [electronic resource] / editors, Nan H. Troiano, Carol J. Harvey, Bonnie Flood Chez.
Obstetrics -- See Also Obstetric Surgical Procedures Surgery performed on the pregnant woman for conditions associated with pregnancy, labor, or the puerperium. It does not include surgery of the newborn infant.
Obstetrics Methods : Primary care in obstetrics and gynecology [electronic resource] : a handbook for clinicians / Joseph S. Sanfilippo, Roger P. Smith, [editors]
Obstetrics Trends : Preterm babies, fetal patients, and childbearing choices / John D. Lantos and Diane S. Lauderdale.
Obstetrics United States : Medical professional liability and the delivery of obstetrical care. Vol. I / Victoria P. Rostow and Roger J. Bulger, editors ; Committee to Study Medical Professional Liability and the Delivery of Obstetrical Care, Division of Health Promotion and Disease Prevention, Institute of Medicine.
Obstruction Airway -- See Airway Obstruction Any hindrance to the passage of air into and out of the lungs.
Obstructions Airway -- See Airway Obstruction Any hindrance to the passage of air into and out of the lungs.
Occipital Region Trauma -- See Craniocerebral Trauma Traumatic injuries involving the cranium and intracranial structures (i.e., BRAIN; CRANIAL NERVES; MENINGES; and other structures). Injuries may be classified by whether or not the skull is penetrated (i.e., penetrating vs. nonpenetrating) or whether there is an associated hemorrhage.
Occluding Junctions -- See Tight Junctions Cell-cell junctions that seal adjacent epithelial cells together, preventing the passage of most dissolved molecules from one side of the epithelial sheet to the other. (Alberts et al., Molecular Biology of the Cell, 2nd ed, p22)
Occupational Diseases Congresses : Work-Related Musculoskeletal Disorders : Report, Workshop Summary, and Workshop Papers / Steering Committee for the Workshop on Work-Related Musculoskeletal Injuries: the Research Base ; Committee on Human Factors, Commission on Behavioral and Social Sciences and Education, National Research Council.
Occupational Diseases Diagnostic Imaging : International classification of HRCT for occupational and environmental respiratory diseases [electronic resource] / Y. Kusaka, K.G. Hering, J.E. Parker (eds.).