A nurse is reinforcing teaching with a parent of a 4-month-old infant during a home visit.

Which of the following statements by the parent indicates an understanding of the teaching?

The correct answer is choice D. Shuffling gait. This is because shuffling gait is a common manifestation of pseudoparkinsonism, which is a condition that mimics the symptoms of Parkinson’s disease due to the use of certain medications that block dopamine receptors, such as haloperidol. Pseudoparkinsonism can cause slowed movements, muscle stiffness, tremor, and postural instability.

Choice A. Nonreactive pupils is wrong because this is not a typical feature of pseudoparkinsonism or Parkinson’s disease.

Nonreactive pupils can be caused by other conditions, such as brain injury, drugs, or eye diseases.

Choice B. Serpentine limb movement is wrong because this is a characteristic of tardive dyskinesia, another drug-induced movement disorder that can result from long-term use of dopamine receptor blocking agents. Tardive dyskinesia causes involuntary movements of the face, tongue, and limbs that are often writhing or twisting.

Choice C. Smacking lips is wrong because this is also a sign of tardive dyskinesia, not pseudoparkinsonism. Smacking lips is one of the orofacial movements that can occur in tardive dyskinesia due to abnormal muscle contractions.

Answer and explanation.

The correct answer is choice A. A nontender, protruding abdomen is a normal finding for a 2year-old toddler. This is due to the immature development of the abdominal muscles and the relatively large size of the liver and kidneys in relation to the rest of the body.

Choice B is wrong because the head circumference should be equal to or less than the chest circumference by age 2. A head circumference that exceeds the chest circumference could indicate hydrocephalus or other neurological problems.

Choice C is wrong because the fontanels, or soft spots on the skull, should be closed by age 18 months. Palpable fontanels could indicate dehydration, malnutrition, or congenital disorders.

Choice D is wrong because the natural loss of deciduous teeth, or baby teeth, usually begins around age 6. Premature loss of teeth could indicate dental caries, trauma, or endocrine disorders.