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Perinatal asphyxia: surveillance of the high-risk fetus.

Methods of testing to identify the fetus at risk for developing perinatal asphyxia continue to be developed and refined. The perinatal nurse needs to be knowledgeable of each test's purpose, capabilities, limitations, and clinical issues. Appropriate nursing interventions based on this knowledge facilitates the testing process and promotes the goal of improved perinatal outcome.