NR 224 Fundamentals
Exam 1 2026 | Questions,
Answers & Rationales
Study Guide
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Updated 2026 Questions and Answers
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Rationales
Included
, ***Chain of Infection 1)Infectious agent or pathogen
2)Reservoir or source for pathogen growth
3)Portal of exit
4)Mode of transmission
5)Portal of entry
6)Susceptible host
Direct contact Person to person OR Person to source
Indirect contact Person to inanimate object
Droplet contact Coughing, Sneezing, Talking (Lg particle only 3 ft)
Airborne Droplet nuclei or residue suspended in air or carried on dust particles
Vehicles Food, water, drugs and solutions, blood, fomites
Vector -External transfer
-Internal Transmission (parasitic) Mosquito, louse, flea, tick
Immunocompromised means having an impaired immune system.
Virulence is the ability to produce disease
Aerobic Bacteria require oxygen for survival and for multiplication sufficient to cause disease.
Anaerobic thrive where little or no free oxygen is available.
Bacteriostasis prevention of growth and reproduction of bacteria.
Bactericidal destructive to bacteria
Normal flora helps to resist infection by releasing antibacterial substances and inhibiting
multiplication of pathogenic microorganisms
Factors influencing infection prevention and control... Age
Nutritional status
Stress
Disease process
Treatments or conditions that compromise the immune response
Exam 1 2026 | Questions,
Answers & Rationales
Study Guide
|Graded A+ | Guaranteed
success|
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, ***Chain of Infection 1)Infectious agent or pathogen
2)Reservoir or source for pathogen growth
3)Portal of exit
4)Mode of transmission
5)Portal of entry
6)Susceptible host
Direct contact Person to person OR Person to source
Indirect contact Person to inanimate object
Droplet contact Coughing, Sneezing, Talking (Lg particle only 3 ft)
Airborne Droplet nuclei or residue suspended in air or carried on dust particles
Vehicles Food, water, drugs and solutions, blood, fomites
Vector -External transfer
-Internal Transmission (parasitic) Mosquito, louse, flea, tick
Immunocompromised means having an impaired immune system.
Virulence is the ability to produce disease
Aerobic Bacteria require oxygen for survival and for multiplication sufficient to cause disease.
Anaerobic thrive where little or no free oxygen is available.
Bacteriostasis prevention of growth and reproduction of bacteria.
Bactericidal destructive to bacteria
Normal flora helps to resist infection by releasing antibacterial substances and inhibiting
multiplication of pathogenic microorganisms
Factors influencing infection prevention and control... Age
Nutritional status
Stress
Disease process
Treatments or conditions that compromise the immune response
