The symptoms observed in certain infants with low birth weight and tremors are most likely related to which factor?

The symptoms observed in certain infants with low birth weight and tremors are most likely related to which factor?

• A. Prematurity
• B. Direct exposure to crack
• C. Maternal nutrition only
• D. Genetic disorder

Answer: (A)

Prematurity is the factor that best fits this scenario. When a baby is born early, the nervous system and many bodily regulation systems are not fully developed, which often results in low birth weight and jittery or tremor-like movements as the infant struggles to control muscles and respond to feeding, temperature changes, and metabolic stresses. These tremors can also arise from the immature regulation of glucose and calcium that is more common in preterm infants, making tremors a recognizable sign in this group. Other options don’t fit as neatly. Direct exposure to crack can produce irritability or withdrawal symptoms, but the combination of low birth weight with tremors is most characteristic of immaturity from prematurity rather than substance exposure alone. Maternal nutrition can influence birth weight but doesn’t inherently cause tremors. A genetic disorder might cause tremors, but it wouldn’t specifically explain the common association with low birth weight seen in premature infants.

Prematurity is the factor that best fits this scenario. When a baby is born early, the nervous system and many bodily regulation systems are not fully developed, which often results in low birth weight and jittery or tremor-like movements as the infant struggles to control muscles and respond to feeding, temperature changes, and metabolic stresses. These tremors can also arise from the immature regulation of glucose and calcium that is more common in preterm infants, making tremors a recognizable sign in this group.

Other options don’t fit as neatly. Direct exposure to crack can produce irritability or withdrawal symptoms, but the combination of low birth weight with tremors is most characteristic of immaturity from prematurity rather than substance exposure alone. Maternal nutrition can influence birth weight but doesn’t inherently cause tremors. A genetic disorder might cause tremors, but it wouldn’t specifically explain the common association with low birth weight seen in premature infants.