The most important Etiological factors of Cerebral Palsy include?

KPSC Staff Nurse - 2017

Child Health Nursing (Pediatrics)

Easy

Appeared in: KPSC Staff Nurse - 2017

Explanation

The majority of Cerebral Palsy cases (85-90%) are congenital, with the cause occurring before or during birth; prenatal factors are the most significant.
Low birth weight, most often a consequence of premature birth, is the single most important and frequently associated risk factor for developing CP.
Congenital malformations of the brain, which are structural abnormalities that occur during fetal development, are another primary cause of CP.

Option B: While both are known causes, they are far less common than prenatal factors. Perinatal hypoxia/asphyxia accounts for a small minority of CP cases (less than 10%), and kernicterus is now a rare cause in developed nations due to effective management of neonatal jaundice.
Option C: Birth trauma has become a rare cause with modern obstetric care. Intra-ventricular Hemorrhage (IVH) is a significant cause of CP, but it is primarily a complication of prematurity. Therefore, low birth weight is the more fundamental risk factor.
Option D: As a pair, these represent a minority of cases. Birth asphyxia is not the most common cause, and birth trauma is rare. The most significant factors are predominantly prenatal.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Etiology and major risk factors for Cerebral Palsy (CP) as background academic context rather than a clinical decision trigger.
Understanding that most CP originates prenatally emphasizes the nurse's role in promoting comprehensive antenatal care, which aims to prevent prematurity and low birth weight.
Nurses in Neonatal Intensive Care Units (NICUs) must be vigilant in monitoring preterm and low-birth-weight infants, as they are the highest-risk population for developing CP.
What if? If the question asked for the most likely cause of CP in a full-term infant with no congenital anomalies who experienced a clear sentinel event during delivery (e.g., uterine rupture), then perinatal hypoxia would be the primary suspect for that specific case.

How to Approach the Question

Identify the keyword 'most important' in the question, which requires you to prioritize the causes of Cerebral Palsy based on their frequency and impact.
Recall the main categories of CP etiology: prenatal (before birth), perinatal (during/around birth), and postnatal (after birth).
Remember that prenatal factors account for the vast majority (70-80%) of all CP cases.
Evaluate each option to determine which pair of factors falls under the most significant (prenatal) category.
Option A includes low birth weight/prematurity and congenital malformations, both of which are major prenatal risk factors.
Options B, C, and D list perinatal factors (hypoxia, kernicterus, trauma), which are known but less frequent causes.

Concept Tested & Keywords

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E6 Obstetrics Williams p. 12-27

E6 Nelson Textbook of Pediatrics(2024) — Volume 2 p. 1495-1497