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Maternal-Child Nursing Care
Vocab for Chapter 17
21
Nursing
Undergraduate 2
12/13/2010

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Term
Surfactant
Definition
A slippery, detergent-like lipoprotein which causes a decreased surface tension within the alveioli to allow for alveolar re-expansion after each exhalation. Usually produced sufficiently by fetus by 34-36 weeks gestation.
Term
Respiratory Distress Syndrome (RDS)
Definition
A developmental disorder of the respiratory system that begins at birth or very soon afterwards, usually in infants with premature lungs. Characterized by lack of surfactant, progressive atelectasis, loss of functional residual capacity, alterations in the ventilation/perfusion ratio, and poor lung compliance.
Term
Acrocyanosis
Definition
Bluish coloration of hands and feet that may persist for up to 24 hours until peripheral circulation improves.
Term
Periodic Breathing
Definition
Pattern of breathing that may include brief pauses that last up to 10-15 seconds.
Term
Apnea
Definition
Cessation of breathing that lasts for more than 20 seconds.
Term
Nonshivering Thermogenesis (NST)
Definition
Chemical heat production. Utilizes stores of brown fat to provide heat in a cold-stress environment.
Term
Brown Adipose Tissue (BAT)
Definition
Brown fat. Unique, highly vascular fat found only in newborns; can be rapidly metabolized if needed.
Term
Evaporation
Definition
The loss of heat that occurs when water is converted into vapor. Can occur if newborn is not adequately dried after birth. Also called Insensible Water Loss (IWL).
Term
Conduction
Definition
Loss of heat to a cooler surface via direct skin contact such as a cold scale or mattress.
Term
Convection
Definition
Loss of heat from warm body surface to cooler air currents. No ceiling fans, place infant away from doors and windows.
Term
Radiation
Definition
Heat loss that occurs when there is a transfer of heat between objects that are not in direct contact with the newborn such as the walls of nursery or incubator.
Term
Hyperthermia
Definition
Elevated core body temperature. Often caused by maternal fever, infection, CNS impairment, dehydration, and medications.
Term
Polycythemia
Definition
An abnormally high erythrocyte count. Places the infant at high risk for jaundice and organ damage due to the increased viscosity of the blood.
Term
Glycogenolysis
Definition
The breakdown of glycogen into the more usable form of glucose wihtin the body tissues. Can occur if the newborn does not receive any exogenous glucose before the intitial hepatic and skeletal glyogen stores have been depleted.
Term
Jaundice
Definition
A condition characterized by a yellow (icteric) coloration of the skin, sclera, and oral mucous membranes. Results from the accumulation of bile pigments associated wtih an excessive amount of bilirubin in the blood (hyperbilirubinemia).
Term
Direct Bilirubin
Definition
The water-soluble bilirubin which is excreted into the common duct and duodenum.
Term
Kernicterus
Definition
A life-threatening condition caused by the deposition of unconjugated bilirubin in the brain and spinal cord.
Term
Pathological Jaundice
Definition
Occurs within the first 24 hours of life. results from disorders that cause excessive hemolysis of erythrocytes leading to increased production of bilirubin.
Term
Breast-Milk Jaundice
Definition
Characterized by bili levels that initially decline, and then increase during the 2nd and 3rd week of life. Results from a factor in human milk that increases the intestinal absorption of bilirubin. Usually, no intervention is necessary; will resolve spontaneously.
Term
Active Acquired Immunity
Definition
Prompted by the pregnant woman's exposure to illness and immunizations.
Term
Passive Acquired Immunity
Definition
Received through the passage of IgG immunoglobulins through the placenta.
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