Which of these is a characteristic of a preterm infant?

Choice A reason:

Hypertonic is not a type of cerebral palsy, but a term that describes increased muscle tone or stiffness. Hypertonicity can be a symptom of spastic cerebral palsy, which is the most common type of the disorder.

Choice B reason:

Spastic is a type of cerebral palsy that affects about 80% of people with the disorder. People with spastic cerebral palsy have stiff and jerky movements due to increased muscle tone.

Spastic cerebral palsy can be further classified by the body parts affected, such as spastic hemiplegia, spastic diplegia or spastic quadriplegia.

Choice C reason:

Hypotonic is a type of cerebral palsy that affects muscle tone and posture. People with hypotonic cerebral palsy have low muscle tone or floppiness, which makes them appear limp and relaxed. Hypotonic cerebral palsy can affect the whole body or specific parts, such as the trunk, limbs or face.

Choice D reason:

Ataxic is a type of cerebral palsy that affects balance and coordination. People with ataxic cerebral palsy have difficulty with precise movements, such as writing, buttoning a shirt or reaching for a book. They may also walk in an unsteady manner or have problems with depth perception.

Choice E reason:

Mixed is a type of cerebral palsy that includes symptoms of more than one type of the disorder. For example, a person with mixed cerebral palsy may have both spastic and dyskinetic movements, or both ataxic and hypotonic features. Mixed cerebral palsy is usually caused by damage to multiple areas of the brain.

Choice A reason:

Hypertonia is not a characteristic of a preterm infant, but rather of a post-term infant. Hypertonia means increased muscle tone or stiffness, which is more common in infants who are overdue. Preterm infants have poor muscle tone and less subcutaneous fat.

Choice B reason:

Long toenails are also not a characteristic of a preterm infant but of a post-term infant. Long toenails indicate that the infant has grown beyond the expected gestational age. Preterm infants have short and brittle nails.

Choice C reason:

Lanugo is a characteristic of a preterm infant. Lanugo is fine, downy hair that covers the body of the fetus. It usually disappears by the 36th week of gestation, but preterm infants may still have it at birth.

Choice D reason:

Dry skin is not a characteristic of a preterm infant but of a post-term infant. Dry skin indicates that the infant has lost moisture and subcutaneous fat due to prolonged exposure to the amniotic fluid. Preterm infants have thin and transparent skin that may be covered by vernix caseosa, a white, cheesy substance that protects the skin from the amniotic fluid.