TL;DR
Chain of Infection: Six links required for disease transmission: infectious agent, reservoir, portal of exit, transmission mode, portal of entry, susceptible host.
Chain of Infection
Definition
Six links required for disease transmission: infectious agent, reservoir, portal of exit, transmission mode, portal of entry, susceptible host.
Common Errors
Common nursing assistant errors with chain of infection:
- Not applying proper body mechanics: use mechanical lifts for residents who cannot bear weight; wide base of support with feet shoulder-width apart, one foot slightly forward; bend at the knees and hips, not at the waist
- Forgetting to identify the resident before providing care
- Not reporting changes in condition promptly to the nurse
- Performing tasks outside the CNA scope of practice
Documentation
CNAs document chain of infection findings by reporting to the nurse and recording in the medical record. Key observations to document:
- Behavioral changes: new confusion, agitation, refusing meals, sleep pattern changes
- Skin observations: color changes, redness over bony prominences, bruising, open areas, edema
- Fall risk factors: history of falls, medications (sedatives, diuretics), mobility impairment, cognitive decline
Exam Focus Areas
On the Cna Nnaap, Cst Surgical Tech, Medical Assistant exam(s), questions about chain of infection typically test:
- Proper procedure for activities of daily living (ADLs)
- Resident rights and appropriate responses to violations
- Observations that must be reported to the nurse immediately
- Body mechanics and safe transfer techniques
Safety Considerations
Safe practice of chain of infection requires proper body mechanics and fall prevention:
- Get help for residents over 35 lbs or who are combative
- Push rather than pull when moving objects or residents
- Use mechanical lifts for residents who cannot bear weight
- Raise bed to working height to avoid bending
Workplace Applications
Applying chain of infection in daily practice as a nursing assistant:
- Right to voice grievances without fear of retaliation or discharge
- Right to participate in care planning and be informed about condition and treatment changes
- Right to privacy for personal care, mail, phone conversations, medical information
- Therapeutic silence: allow time for the resident to process and respond
- For hearing-impaired: face the resident, speak clearly (not louder), reduce background noise
- Cultural sensitivity: respect food preferences, spiritual practices, family dynamics
Why It Matters
Chain of infection and breaking each link tested on CNA, CST, and MA exams.
Related Terms
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