Chapter 34: Nursing Care of the High Risk Newborn – Flashcards

ANS: C The laboratory value of PaO2 of 45 mm Hg is below the range for a normal neonate and indicates hypoxia in this infant. The normal range for PaO2 is 60 to 80 mm Hg; therefore, PaO2 levels of 67 and 73 mm Hg fall within the normal range, and a PaO2 of 89 mm Hg is higher than the normal range.

ANS: D Physical contact with the infant is important to establish early bonding. The nurse as the support person and teacher is responsible for shaping the environment and making the caregiving responsive to the needs of both the parents and the infant. Allowing the parents to hold their baby is the most appropriate response by the nurse. Parental interaction by holding should be encouraged during gavage feedings; nasal cannula oxygen therapy allows for easy feedings and psychosocial interactions. The parent can swaddle the infant or provide kangaroo care while gavage feeding their infant. Both swaddling and kangaroo care during feedings provide positive interactions for the infant and help the infant associate feedings with positive interactions.

ANS: A Surfactant can be administered as an adjunct to oxygen and ventilation therapy. With the administration of an artificial surfactant, respiratory compliance is improved until the infant can generate enough surfactant on his or her own. Surfactant has no bearing on the sedation needs of the infant. Surfactant is used to improve respiratory compliance, including the exchange of oxygen and carbon dioxide. The goal of surfactant therapy in an infant with RDS is to stimulate the production of surfactant in the type 2 cells of the alveoli. The clinical presentation of RDS and neonatal pneumonia may be similar. The infant may be started on broad-spectrum antibiotics to treat infection.

ANS: C Feedings by gravity are slowly accomplished over 20- to 30-minute periods to prevent adverse reactions. Rapid bolusing would most likely lead to the adverse reactions listed. Temperature stability in the newborn is critical. Applying warm cloths to the abdomen would not be appropriate because the environment is not thermoregulated. In addition, abdominal warming is not indicated with feedings of any kind. Small feedings at room temperature are recommended to prevent adverse reactions.

ANS: B "Ineffective coping, related to environmental stress" is the most appropriate nursing diagnosis for this infant. Light and sound are known adverse stimuli that add to an already stressed premature infant. The nurse must closely monitor the environment for sources of overstimulation. Although the infant may be severely immature in this case, she is responding to environmental stress. Physiologic distress is the response to environmental stress. The result is stress cues such as increased metabolic rate, increased oxygen and caloric use, and depression of the immune system. The infant's behavioral response to the environmental stress is crying. The appropriate nursing diagnosis reflects the cause of this response.

ANS: D Crying and an increased heart rate are manifestations indicative of pain in the neonate. Typically, infants tightly close their eyes when in pain, not open them wide. In addition, infants may display a rigid posture with the mouth open and may also withdraw limbs and become tachycardic with pain. A high-pitched, shrill cry is associated with genetic or neurologic anomalies.

ANS: B The nurse is instrumental in the initial interactions with the infant. The nurse can help the parents see the infant rather than focus on the equipment. The importance and purpose of the apparatus that surrounds their infant also should be explained to them. Parents often need encouragement and recognition from the nurse to acknowledge the reality of the infant's condition. Parents need to see and touch their infant as soon as possible to acknowledge the reality of the birth and the infant's appearance and condition. Encouragement from the nurse is instrumental in this process. Telling the parents to avoid touching their baby is inappropriate and unhelpful.

ANS: C The age of a preterm newborn is corrected by adding the gestational age and the postnatal age. The infant's responses are accordingly evaluated against the norm expected for the corrected age of the infant. The baby is currently 40 weeks of postconceptional age and can be expected to be doing what a 40-week-old infant would be doing. Although predicting with complete accuracy the growth and development potential of each preterm infant is impossible, certain measurable factors predict normal growth and development. The preterm infant experiences catch-up body growth during the first 2 to 3 years of life. Development needs to be evaluated over time. The growth and developmental milestones are corrected for gestational age until the child is approximately years old.

ANS: A Meconium aspiration, hypoglycemia, and dry, cracked skin are consistent with a postmature infant. Excessive vernix caseosa, lethargy, and RDS are consistent with a very premature infant. The skin may be meconium stained, but the infant will most likely have long hair and decreased amounts of subcutaneous fat. Postmaturity with a nonreactive NST is indicative of hypoxia. Signs and symptoms associated with fetal hypoxia are hypoglycemia, temperature instability, and lethargy.

ANS: A Other symptoms might include hypotension, prolonged capillary refill, and tachycardia, followed by bradycardia. Intervention is necessary. Preterm infants are susceptible to temperature instability. The goal of thermoregulation is to provide a neutral thermal environment. Hypoglycemia is likely to occur if the infant is attempting to conserve heat. CNS injury is manifested by hyperirritability, seizures, and abnormal movements of the extremities. Urine output and testing of specific gravity are appropriate interventions for the infant with suspected renal failure. This neonate is unlikely to be delivered with respiratory distress.

ANS: B Corrections are made with a formula that adds gestational age and postnatal age. Whether a girl or boy, the infant experiences catch-up body growth during the first 2 to 3 years of life. Maximum catch-up growth occurs between 36 and 40 weeks of postconceptual age. The head is the first to experience catch-up growth.

ANS: C Kangaroo care is skin-to-skin holding in which the infant, dressed only in a diaper, is placed directly on the parent's bare chest and then covered. The procedure helps infants interact with their parents and regulates their temperature, among other developmental benefits. Kangaroo care was established in Bogota, Colombia, assists the infant in maintaining an organized state, and decreases pain perception during heelsticks. Even premature infants who are unable to suckle benefit from kangaroo care. This practice fosters increased vigor and an enhanced breastfeeding experience as the infant matures.

ANS: C Preterm and postterm are strictly measures of time—before 37 weeks and beyond 42 weeks, respectively—regardless of the size for gestational age.

ANS: C High-risk infants can cause profound parental stress and emotional turmoil. Parents need support, special teaching, and quick access to various resources available to help them care for their baby. Parents and their high-risk infant should get to spend a night or two in a predischarge room, where care for the infant is provided away from the NICU. Simply because high-risk infants are eventually discharged does not mean they are normal, healthy babies. Follow-up by specialized practitioners is essential. Ideally, the mother and baby are transported with the fetus in utero; this reduces neonatal morbidity and mortality.

ANS: C The infant has minimal-to-no fat stores. During times of cold stress, the skin becomes mottled and acrocyanosis develops, progressing to cyanosis. Even if the infant is being cared for on a radiant warmer or in an isolette, the nurse's role is to observe the infant frequently to prevent heat loss and to respond quickly if signs and symptoms of cold stress occur. The respiratory rate increases, followed by periods of apnea. The infant initially tries to conserve heat and burns more calories, after which the metabolic system goes into overdrive. In the preterm infant who is experiencing heat loss, the heart rate initially increases, followed by periods of bradycardia. In the term infant, increased physical activity is the natural response to heat loss. However, in a term infant who is experiencing respiratory distress or in a preterm infant, physical activity is decreased.

ANS: D Preterm infants have greater surface area in proportion to their weight. More subcutaneous fat and well-developed muscles are indications of a more mature infant.

ANS: D Documentation of a gavage feeding should include the size of the feeding tube, the amount and quality of the residual from the previous feeding, the type and quantity of the fluid instilled, and the infant's response to the procedure. Abdominal circumference is not measured after a gavage feeding. Although vital signs may be obtained before feeding, the infant's response to the feeding is more important. Similarly, some older infants may be learning to suck; the most important factor to document would still be the infant's response to the feeding, including the attempts to suck.

ANS: A Listening to breath sounds and ensuring the patency of the endotracheal tube, increasing oxygen, and notifying a physician are appropriate nursing interventions to assist in optimal oxygen saturation of the infant. Oxygen saturation should be maintained above 92%, and oxygenation status of the infant is crucial. The nurse should delay other tasks to stabilize the infant. Notifying the parents that the infant is not doing well is not an appropriate action. Further assessment and intervention are warranted before determining fetal status.

ANS: B Some generalized signs of NEC include decreased activity, hypotonia, pallor, recurrent apnea and bradycardia, decreased oxygen saturation values, respiratory distress, metabolic acidosis, oliguria, hypotension, decreased perfusion, temperature instability, cyanosis, abdominal distention, residual gastric aspirates, vomiting, grossly bloody stools, abdominal tenderness, and erythema of the abdominal wall. The infant may display hypotonia, bradycardia, and metabolic acidosis.

ANS: B ROP is thought to occur as a result of high levels of oxygen in the blood. NEC is caused by the interference of blood supply to the intestinal mucosa. Necrotic lesions occur at that site. BPD is caused by the use of positive pressure ventilation against the immature lung tissue. IVH results from the rupture of the fragile blood vessels in the ventricles of the brain and is most often associated with hypoxic injury, increased blood pressure, and fluctuating cerebral blood flow.

ANS: D Breathing in a respiratory pattern is called periodic breathing and is common to premature infants. This pattern may still require nursing intervention of oxygen and/or ventilation. Apnea is the cessation of respirations for 20 seconds or longer and should not be confused with periodic breathing.

ANS: B IUGR is either symmetric or asymmetric. The symmetric form occurs in the first trimester; infants who are SGA have reduced brain capacity. The asymmetric form occurs in the later stages of pregnancy. Weight is less than the 10th percentile; head circumference is greater than the 10th percentile. Infants with asymmetric IUGR have the potential for normal growth and development.

ANS: B A decrease in the incidence of NEC is directly correlated with exclusive breastfeeding. Breast milk enhances the maturation of the gastrointestinal tract and contains immune factors that contribute to a lower incidence or severity of NEC, Crohn disease, and celiac illness. The NICU nurse can be very supportive of the mother in terms of providing her with equipment to pump breast milk, ensuring privacy, and encouraging skin-to-skin contact with the infant. Early enteral feedings of formula or hyperosmolar feedings are a risk factor known to contribute to the development of NEC. The mother should be encouraged to pump or feed breast milk exclusively. Exchange transfusion may be necessary; however, it is a known risk factor for the development of NEC. Although still early, a study in 2005 found that the introduction of prophylactic probiotics appeared to enhance the normal flora of the bowel and therefore decrease the severity of NEC when it did occur. This treatment modality is not as widespread as encouraging breastfeeding; however, it is another strategy that the care providers of these extremely fragile infants may have at their disposal.

ANS: D The nurse needs to understand that decreased immune functioning increases the risk for infection. Growth and development, thermoregulation, and feeding may be affected, although only indirectly.

ANS: A Virtually all controlled clinical trials have demonstrated that effective handwashing is responsible for the prevention of nosocomial infection in nursery units. Measures to be taken include Standard Precautions, careful and thorough cleaning, frequent replacement of used equipment, and disposal of excrement and linens in an appropriate manner. Overcrowding must be avoided in nurseries. However, the most important nursing action for preventing neonatal infection is effective handwashing.

ANS: A, B, C Risk factors for NEC include asphyxia, RDS, umbilical artery catheterization, exchange transfusion, early enteral feedings, patent ductus arteriosus (PDA), congenital heart disease, polycythemia, anemia, shock, and gastrointestinal infection. Bronchopulmonary dysphasia and retinopathy are not associated with NEC

ANS: A, C, D Thermoregulation problems, hyperbilirubinemia, and sepsis are all conditions related to immaturity and warrant close observation. After discharge, the infant is at risk for rehospitalization related to these problems. Association of Women's Health, Obstetric and Neonatal Nurses (AWHONN) launched the Near-Term Infant Initiative to study the problem and ways to ensure that these infants receive adequate care. The nurse should ensure that this infant is adequately feeding before discharge and that parents are taught the signs and symptoms of these complications. Late-preterm infants are also at increased risk for respiratory distress and hypoglycemia.

ANS: 42 6/7 weeks The age of a preterm newborn is corrected by adding the gestational age and the postnatal age. For example, an infant born at 32 weeks of gestation 4 weeks ago would now be considered 36 weeks of age. (32 + 4 = 36).