Disease that passes from parent to offspring across the placenta is said to be transmitted?

Appeared in: NHM MP Staff Nurse - 2015

Explanation

Vertical transmission is the correct term for the passage of an infectious agent from a mother to her fetus or newborn.
This mode of transmission can occur via three main routes: transplacental (across the placenta), during birth (perinatal), or through breastfeeding (postnatal).
The question specifically mentions transmission 'across the placenta', which is a classic example of vertical transmission.
Infections transmitted this way are often called congenital infections and can lead to significant health problems for the newborn.
The acronym TORCH is commonly used to remember key pathogens transmitted vertically: Toxoplasmosis, Other (syphilis, varicella-zoster, parvovirus B19), Rubella, Cytomegalovirus, and Herpes simplex virus.

Option A: Horizontal transmission refers to the spread of an infectious agent from one person to another within the same generation, not from parent to child.
Option B: 'Obliquely' is not a recognized or standard term in epidemiology for describing the mode of disease transmission.
Option D: 'In a circular way' is not a standard scientific term used to classify how infectious diseases are spread.

Clinical Relevance

Nursing practice connection: Knowing Modes of disease transmission helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Understanding vertical transmission is crucial in maternal and child health nursing for screening, prevention, and management of congenital infections.
Nurses play a key role in educating pregnant women about risks and preventive measures, such as vaccination (e.g., Rubella before pregnancy), safe food handling (to prevent Toxoplasmosis), and safe sex practices.
Antenatal screening for infections like HIV, Hepatitis B, and Syphilis is a standard of care to identify at-risk mothers and implement interventions to prevent transmission to the baby.

How to Approach the Question

First, analyze the keywords in the question: 'parent to offspring' and 'across the placenta'.
Recognize that 'parent to offspring' signifies a transfer between generations.
The term 'placenta' specifies the route of transfer as being in utero, from mother to fetus.
Evaluate the options based on standard epidemiological terminology.
Recall or deduce that 'vertical transmission' describes the passage of pathogens from one generation (mother) to the next (child).
Eliminate 'horizontal transmission' as it refers to spread within the same generation.

Concept Tested & Keywords

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E6 Microbiology Essentials Sastry 4e Part 1 p. 131-133

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 348-350

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) p. 90-92

Practise the full NHM MP Staff Nurse - 2015

Attempt every question from this paper in a timed mock, then review the full solution for each one.