Perinatal transmission of HIV means?

RUHS, Jaipur, M.Sc Nursing Entrance Exam-2018

Obstetrics and Midwifery Nursing

Easy

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2018

Explanation

Perinatal transmission, also known as mother-to-child transmission (MTCT) or vertical transmission, is the passage of HIV from a mother to her baby.
This transmission can occur during three distinct periods: pregnancy (in utero), labor and delivery (intrapartum), or through breastfeeding (postnatal).
Transplacental transmission is the specific mode that occurs during pregnancy when the virus crosses the placenta to infect the fetus.
Among the given choices, transplacental transmission is a primary and direct mechanism defining the prenatal component of perinatal transmission.

Option B: Preterm birth is a risk factor that increases the chance of HIV transmission due to factors like a weaker placental barrier, but it is not a mode or mechanism of transmission itself.
Option C: Breastfeeding is a valid mode of mother-to-child HIV transmission, but it occurs after birth (postnatal period). While often grouped under the general term of MTCT, transplacental transmission occurs during the prenatal period, which is a core part of the perinatal timeframe.
Option D: Sexual contact is a form of horizontal transmission, meaning transmission between individuals (e.g., partners), not vertical transmission from mother to child.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition and modes of perinatal (mother-to-child) HIV transmission as background academic context rather than a clinical decision trigger.
Nurses play a crucial role in preventing perinatal HIV transmission by educating pregnant women on the importance of HIV testing, adherence to antiretroviral therapy (ART), and safe infant feeding practices.
Early identification of HIV in pregnant women is critical. Universal HIV screening is recommended for all pregnant women to initiate timely interventions and significantly reduce transmission rates.
What if? If a mother with a high viral load (greater than 1,000 copies/mL) near delivery insists on a vaginal birth, the nurse must advocate for the safest option, which is a planned cesarean section, and ensure the healthcare team clearly communicates the increased transmission risks to the patient.

How to Approach the Question

First, understand the term 'perinatal transmission'. This refers to transmission from a mother to her child occurring around the time of birth.
Recall the different ways HIV can be transmitted from a mother to her baby: during pregnancy, during birth, and through breastfeeding. This is collectively known as vertical transmission or mother-to-child transmission (MTCT).
Evaluate each option against this knowledge.
Option A, 'Transplacental transmission', is transmission during pregnancy. This is a direct component.
Option B involves a risk factor (preterm birth), not a mode of transmission.
Option C, 'Breast feeding', is transmission after birth (postnatal).

Concept Tested & Keywords

Concept Tested: Definition and modes of perinatal (mother-to-child) HIV transmission.
Stem keywords: Perinatal transmission, HIV
Lead-in keywords: means

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E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 2096-2098