A woman is being treated for preterm labor with magnesium sulfate. Which finding by the nurse indicates magnesium sulfate toxicity?
Select one:

Choice A Reason: Apical pulse of 148 beats per minute. This is not a finding that would support a diagnosis of RDS, but rather a normal finding for a newborn. A normal apical pulse for a newborn ranges from 120 to 160 beats per minute. A high pulse rate may indicate fever, infection, anemia, or dehydration. A low pulse rate may indicate hypothermia, hypoxia, or heart block.

Choice B Reason: Respiratory rate of 40 during sleep. This is not a finding that would support a diagnosis of RDS, but rather a normal finding for a newborn. A normal respiratory rate for a newborn ranges from 40 to 60 breaths per minute. A high respiratory rate may indicate respiratory distress, infection, or metabolic acidosis. A low respiratory rate may indicate respiratory depression, hypothermia, or narcotic exposure.

Choice C Reason: Skin color jaundiced. This is not a finding that would support a diagnosis of RDS, but rather a different condition called jaundice. Jaundice is a yellowish discoloration of the skin and mucous membranes caused by elevated levels of bilirubin in the blood. Bilirubin is a breakdown product of hemoglobin that is normally excreted by the liver and kidneys. Jaundice can occur in newborns due to immature liver function, increased red blood cell breakdown, or blood group incompatibility. Jaundice does not affect lung function or oxygenation.

Choice D Reason: Chest retractions. This is because chest retractions are a sign of respiratory distress that indicate increased work of breathing and reduced lung compliance. Chest retractions occur when the chest wall sinks in between the ribs or below the sternum during inhalation, creating a negative pressure that helps draw air into the lungs. RDS is a serious condition where the newborn's lungs are immature and lack sufficient surfactant, which is a substance that reduces surface tension and prevents alveolar collapse. RDS can cause respiratory distress, hypoxia, acidosis, and organ failure. It is more common in preterm infants, especially those born before 37 weeks' gestation.

Choice A Reason: "My baby will always be smaller than other babies his age." This is an incorrect answer that indicates a misconception or pessimism about SGA newborns. SGA newborns may not always be smaller than other babies their age, as they may catch up in growth and development with appropriate nutrition and care. SGA newborns may have different growth paterns depending on the cause and timing of their growth restriction.

Choice B Reason: "My baby will be okay as long as he has frequent feedings." This is an incorrect answer that indicates an oversimplification or optimism about SGA newborns. SGA newborns may not be okay with just frequent feedings, as they may have other problems or complications that require medical atention and intervention. SGA newborns may have increased nutritional needs and feeding difficulties due to low birth weight, poor suck-swallow coordination, or oral aversion.

Choice C Reason: "My baby will need to stay in the hospital until he weighs 5 pounds." This is an incorrect answer that indicates a misunderstanding or confusion about SGA newborns. SGA newborns may not need to stay in the hospital until they weigh 5 pounds, as they may be discharged earlier or later depending on their condition and readiness for home care. SGA newborns may have different criteria for discharge based on their gestational age, weight gain, feeding tolerance, temperature stability, and absence of complications.

Choice D Reason: "My baby can get cold easily, may have low blood sugar, and may have trouble breathing." This is because this statement by the parents indicates that they understand some of the common problems and complications that SGA newborns may face. SGA newborns are those who weigh less than the 10th percentile for their gestational age, which can be due to intrauterine growth restriction (IUGR) or constitutional factors. SGA newborns may have difficulties with thermoregulation, glucose metabolism, and respiratory function due to inadequate fat stores, glycogen reserves, and surfactant production.