a new mother has some questions about phenylketonuria pku which of the following statements made by a nurse is not correct regarding pku

NCLEX-RN

NCLEX RN Practice Questions Quizlet

1. A new mother has some questions about phenylketonuria (PKU). Which of the following statements made by a nurse is not correct regarding PKU?

A. A Guthrie test can check the necessary lab values.
B. The urine has a high concentration of phenylpyruvic acid
C. Mental deficits are often present with PKU
D. The effects of PKU are reversible

Correct answer: D

Rationale: Phenylketonuria (PKU) is an inherited disorder that increases the levels of phenylalanine (a building block of proteins) in the blood. If PKU is not treated, phenylalanine can build up to harmful levels in the body, causing intellectual disability and other serious health problems. The signs and symptoms of PKU vary from mild to severe. The most severe form of this disorder is known as classic PKU. Infants with classic PKU appear normal until they are a few months old. Without treatment, these children develop a permanent intellectual disability. Seizures, delayed development, behavioral problems, and psychiatric disorders are also common. Untreated individuals may have a musty or mouse-like odor as a side effect of excess phenylalanine in the body. Children with classic PKU tend to have lighter skin and hair than unaffected family members and are also likely to have skin disorders such as eczema. The effects of PKU stay with the infant throughout their life (via Genetic Home Reference).

2. A 32-year-old pregnant woman comes to the clinic for her prenatal visit. The nurse gathers data about her obstetric history, which includes 3-year-old twins at home and a miscarriage 10 years ago at 12 weeks gestation. How would the nurse accurately document this information?

A. G4 T1 P0 A1 L2
B. G3 T1 P0 A1 L2
C. G3 T0 P1 A1 L2
D. G4 T0 P1 A1 L2

Correct answer: D

Rationale: The correct answer is G4 T1 P0 A1 L2. This documentation accurately represents the woman's obstetric history. G4: She is currently pregnant (1), has twins (1), and had a miscarriage (1), totaling four pregnancies. T1: She has had one pregnancy that resulted in the birth of her twins at term. P0: She has not had any preterm births. A1: She had one miscarriage at 12 weeks gestation. L2: She has two living children (the twins). Therefore, the correct documentation reflects all aspects of her obstetric history as provided.

3. Becky is a 17-year-old type I diabetic who has been admitted for her third episode of diabetic ketoacidosis (DKA) since being diagnosed last year. She states that she hates feeling different from her friends and refuses to take her insulin as recommended. What would be the most helpful action for Becky?

A. Scolding her for not taking her insulin
B. Recommending that she use an insulin pump
C. Contacting the local support group for diabetic teens
D. Telling her parents they must provide more strict oversight

Correct answer: C

Rationale: Contacting the local support group for diabetic teens would be the most helpful action for Becky. By reaching out to see if another diabetic teenager could provide support, Becky would have the opportunity to connect with someone in her peer group who faces similar challenges. This connection can help reduce her sense of isolation and the feeling of being 'different.' Choice A, 'Scolding her for not taking her insulin,' is inappropriate and could further alienate Becky. It does not address the underlying emotional issues driving her behavior. Choice B, 'Recommending that she use an insulin pump,' does not directly address Becky's emotional struggle with feeling different from her friends. While an insulin pump may be a helpful tool, it does not tackle the root cause of her non-compliance. Choice D, 'Telling her parents they must provide more strict oversight,' focuses on imposing stricter control without addressing Becky's emotional needs or offering peer support, which may not be effective in improving her insulin adherence in the long term.

4. A nurse is assessing a client's pulse oximetry on the surgical unit. As part of routine interventions, the nurse turns off the exam light over the client's bed. Which of the following best describes the rationale for this intervention?

A. External light sources may cause falsely high oximetry values
B. A bright light in the client's face may cause a low pulse oximetry
C. External light sources may cause falsely low oximetry values
D. The client needs a dark and quiet room to recover and maintain proper oxygenation

Correct answer: A

Rationale: When assessing a client's pulse oximetry values, the nurse should turn off any extra environmental lights that are unnecessary, including exam lights or over-bed lights. External light sources may cause falsely high oximetry values when the extra light interferes with the sensor of the oximeter, leading to inaccurate readings. Choice B is incorrect because a bright light in the client's face would not directly affect the pulse oximetry values. Choice C is incorrect as external light sources typically cause falsely high, not low, oximetry values. Choice D is incorrect as the primary reason for turning off the light is to prevent falsely high readings, not solely for the client's comfort.

5. Mr. N is a client who entered the hospital with a diagnosis of diabetic ketoacidosis. The nurse enters his room to check his vital signs and finds him breathing at a rate of 32 times per minute; his respirations are deep and regular. Which type of respiratory pattern is Mr. N most likely exhibiting?

A. Kussmaul respirations
B. Cheyne-Stokes respirations
C. Biot's respirations
D. Cluster breathing

Correct answer: A

Rationale: Mr. N is exhibiting Kussmaul respirations, characterized by rapid, deep, and regular breathing. This type of respiratory pattern is commonly seen in metabolic acidosis, such as in diabetic ketoacidosis. Kussmaul respirations are a form of hyperventilation, leading to the elimination of carbon dioxide from the body. Choice B, Cheyne-Stokes respirations, is characterized by alternating periods of deep, rapid breathing followed by periods of apnea and is not typically associated with diabetic ketoacidosis. Choice C, Biot's respirations, involve irregular breathing patterns with periods of apnea and are not reflective of the described breathing pattern. Cluster breathing, as mentioned in Choice D, is not a recognized term in respiratory patterns and does not describe the breathing pattern observed in Mr. N.