Basic Nursing Science: Fundamentals, Anatomy/Physiology, Microbiology, Pathology
What the exam expects
Basic Nursing Science rewards precise, mechanism-level understanding rather than memorized lists. Candidates must connect anatomy and physiology (how a structure's design produces its function) to fundamentals (assessment, asepsis, medication safety, vital signs, positioning, fluid balance), and to microbiology/pathology (how organisms and cellular injury produce the signs you observe).
Concepts to master
- Homeostasis and compensation: know which system corrects which imbalance (renal vs respiratory control of acid-base; baroreceptor vs renin-angiotensin response to hypotension).
- Asepsis: medical vs surgical asepsis; which items must remain sterile and where the sterile field ends.
- Chain of infection: the six links and which intervention breaks each one.
- Inflammation vs infection: inflammation is the host response (redness, heat, swelling, pain, possible fever); infection requires a pathogen and often adds systemic signs.
- Cell injury and healing: reversible vs irreversible injury; primary, secondary, and tertiary intention.
Common traps
Questions often swap a normal finding for an abnormal one, or test the first nursing action rather than the definitive treatment. Vital-sign distractors rely on single readings instead of trends. Sterile-technique items punish overreach: once a sterile item touches a non-sterile surface, it is contaminated regardless of intent. Microbiology items may confuse disinfection (reduces pathogens on inanimate objects) with sterilization (destroys all microorganisms including spores).
Rule of thumb
Assess before you act, and treat the trend, not the number. For any asepsis question, ask: "Did this object stay within the sterile field and above waist level?" If not, it is contaminated.
Worked example
A postoperative patient has a temperature of 38.1°C on the first evening after surgery with clear lung sounds and a clean incision. Best first action? Assess further (vital-sign trend, wound, lungs, hydration) before assuming infection-early postoperative low-grade fever is often a normal inflammatory response.