Primary prevention aims to reduce the?

DSSSB -28 August 2019 (Shift-2)

Community Health Nursing

Easy

Appeared in: DSSSB -28 August 2019 (Shift-2)

Explanation

Primary prevention consists of actions taken before the onset of a disease to prevent it from ever happening.
The primary goal is to reduce the rate of new cases of a disease within a population over a specific time.
In epidemiology, the measure of new cases is called 'incidence'.
Therefore, the direct aim of primary prevention is to reduce the incidence of a disease.
Examples like immunization and health education on smoking cessation are designed to stop the disease process before it can begin.

Option A: This term is ambiguous. 'Number of cases' could refer to either new cases (incidence) or total existing cases (prevalence). 'Incidence' is the precise epidemiological term for the goal of primary prevention.
Option B: Reducing complications of an already established disease is the primary goal of tertiary prevention. This level of prevention focuses on rehabilitation and limiting disability after a disease has progressed.
Option C: Reducing the prevalence (the total number of existing cases, both old and new) is the aim of secondary prevention. This is achieved through early detection and prompt treatment, which shortens the duration of the disease.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Levels of Prevention in Community Health Nursing as background academic context rather than a clinical decision trigger.
Nurses play a vital role in all levels of prevention. They administer vaccines (primary), conduct health screenings (secondary), and educate patients on managing chronic conditions to prevent complications (tertiary).
Understanding these levels helps public health nurses design and implement effective community health programs tailored to the specific needs of a population.
What if? If a community has a high prevalence of a chronic disease but a low incidence, the public health nurse's priority would shift from primary prevention (e.g., health education for the general population) to secondary and tertiary prevention (e.g., screening to find undiagnosed cases and managing existing patients to prevent complications).

How to Approach the Question

First, identify the key term in the question: 'Primary prevention'.
Recall the definition of the different levels of prevention. 'Primary' means 'first' or 'before the beginning'.
Understand the epidemiological terms in the options: 'Incidence' refers to new cases, while 'Prevalence' refers to all existing cases (new and old).
Connect the concepts: Since primary prevention aims to stop a disease before it starts, its goal is to reduce the number of new cases.
Select the option that corresponds to the rate of new cases, which is 'Incidence of a disease'.
Eliminate the other options by linking them to the correct level of prevention: 'Complication' relates to tertiary prevention, and 'Prevalence' relates to secondary prevention.

Concept Tested & Keywords

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E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) pp. 33-35, 53-55