Exam 1 Study Guide

When Vital Signs Are Taken — and Who Takes Them

Changes in vital signs often signal a change in the patient's condition and point to which body system needs attention. Take them on admission; before and after invasive procedures; before, during, and after medications that affect blood pressure or heart rate; before and after procedures affecting BP; per agency or unit policy; and whenever there is a change in patient condition.

Temperature

The hypothalamus is the body's thermostat. Normal oral temperature is 36.5–37.5 °C or 97.7–99.5 °F, and you must be able to convert in both directions: C = (F − 32) × 5/9 and F = (C × 9/5) + 32.

Working a conversion under pressure. Take 38.4 °C. F = (38.4 × 9/5) + 32 = 69.12 + 32 = 101.1 °F — febrile. Going the other way, 96.8 °F: C = (96.8 − 32) × 5/9 = 64.8 × 5/9 = 36.0 °C — below the starred range, so this patient is trending toward hypothermia. A useful anchor: 37 °C = 98.6 °F, and every 1 °C is 1.8 °F.

Fluctuations. Temperature varies with activity, age, gender, state of health, and time of day — lowest in the morning, peaking in the afternoon. Hyperthermia (fever, pyrexia) is treated with antipyretics, fluids, and cooling measures; hypothermia with warming measures and by treating the cause. Afebrile means without fever; febrile means with fever.

Pulse

The pulse is a pressure wave produced by contraction of the heart. Peripheral pulses are palpated; the apical pulse is auscultated at the apex of the heart. Normal adult rate is 60–100 beats/minute; >100 is tachycardia, <60 is bradycardia, and asystole means no mechanical function and therefore no pulse.

The nine pulse points

Temporal, carotid, apical, brachial, radial, femoral, popliteal, posterior tibial, and pedal (dorsalis pedis). The radial is the most commonly assessed; the apical is the most accurate. In an emergency, use the carotid or femoral, because they persist when peripheral pulses are lost.

Rate, rhythm, and amplitude — the three things you document

Rhythm is the interval between beats: regular or irregular. An irregular rhythm is a dysrhythmia. Amplitude is the strength of the pulse — the volume of blood moving through the vessel.

Technique — and the two branch points the exam will test

Use the pads of the index and middle fingers. Never use your thumb — it has its own pulse and you may count your own. Press gently until you feel the pulse. Then two decisions follow:

Pulse deficit

A pulse deficit is the difference between the apical and radial rates. It occurs when the heart contracts but does not generate enough force to perfuse a peripheral pulse — so the beat is heard at the apex but not felt at the wrist. It is associated with dysrhythmias. To assess it properly, two nurses count simultaneously for one full minute — one at the apex, one at the radial — and the deficit is apical minus radial. A deficit of zero is normal.

Respiration

Respiration supplies oxygen and eliminates carbon dioxide. On inspiration the intercostal muscles and diaphragm contract, the pleural cavity expands, negative pressure draws air in. On expiration they relax, the cavity decreases, and air flows out passively.

Count one full inspiration-and-expiration cycle. Normal is 12–20 breaths per minute (eupnea); >20 is tachypnea, <12 is bradypnea, absent is apnea. Count for 30 seconds and multiply by two — while the patient is unassuming, meaning unaware you are counting, which is why you keep your fingers on the radial pulse and count respirations immediately afterward.

Rate and depth vary with exercise, anxiety, pain, smoking, position, medications, neurological injury, lung disease, hemoglobin level, and acid–base balance.

Oxygen Saturation

Pulse oximetry measures the percentage of hemoglobin saturated with oxygen and indicates abnormal gas exchange. The course deck gives normal as 92%–100%, and notes that 85%–89% may be normal for a patient with chronic lung disease — know your patient and monitor trends. Taylor gives 95%–100%; use the course value.

The finger is the most common site. If circulation is poor, move to the earlobe, forehead, or bridge of the nose.

Blood Pressure

Blood pressure is the force exerted by the flow of blood against the arterial wall, measured with a sphygmomanometer in mmHg. Systolic is normally 100–120 mmHg (maximum pressure, during systole) and diastolic 60–80 mmHg (lowest pressure, heart at rest).

Pulse pressure is the difference between systolic and diastolic and reflects stroke volume — for 120/80 it is 40. Korotkoff sounds are the sounds heard over the artery as the cuff deflates; the first sound is systolic, and the point where they disappear is diastolic. BP is influenced by age, weight, gender, ethnicity, position, crossed legs (a slight increase), emotion, medication, circadian rhythm, smoking, illness, and conditioning.

Hypotension can be normal in a conditioned athlete but most often indicates illness. Hypertension is diagnosed on multiple readings, never one.

Cuff size — and which direction the error goes

The bladder length should be 75%–100% of arm circumference and the width 37%–50%, a 2:1 length-to-width ratio. Check the fit: one finger should slide easily under the top and bottom edges; two fingers should fit but very snugly.

Which limb — and when the arm is off limits

The blueprint names this outright: "BP With Contraindicated Arm — procedure for obtaining BP when an arm is unavailable (mastectomy, PICC line)." The reason for avoiding the mastectomy side is compromised lymphatic drainage and lymphedema risk; for a PICC or fistula, cuff inflation can damage the access.

The two-step method — know the rationale, not just the steps

Step one: palpate the brachial or radial pulse, inflate the cuff, and note the point at which the pulse disappears — this estimates the systolic pressure. Deflate fully and wait one full minute. Step two: place the stethoscope over the brachial artery and inflate to 20–30 mmHg above the estimated systolic, then deflate slowly and auscultate.

Other sources of error: wrong cuff size, poor technique, misplaced stethoscope, incorrect patient position, examiner hearing deficit, re-inflating the cuff during the procedure, reading the gauge off eye level, and defective equipment.

Vital Signs Across the Lifespan

The blueprint asks for pediatric and geriatric differences, and the lecture decks give only adult values — so this table, from Taylor Ch 26, fills a real gap. The pattern is what matters: pulse and respiratory rates fall steadily from newborn to adult while blood pressure rises, and temperature norms barely move.

What the Student Nurse Does About an Abnormal Reading

This is its own blueprint row, and the instructor's warm-up question was built on it exactly: four complete vital-sign sets, one of which must be reported immediately. Work it in this order.

Ranking two abnormal findings against each other

The worked example above answers one instance of a question the exam asks in many forms: two findings are both abnormal — which one do you act on first? The instinct is to rank by distance from normal, and that instinct is wrong often enough to be worth unlearning deliberately. Rank instead by the function each finding threatens, in ABC order, and ask three questions of every borderline value: is it new, is there an explanation, and is the patient symptomatic?

The Nurse's Role and the Four Goals

The ANA defines nursing as "the protection, promotion and optimization of health and abilities, prevention of illness and injury, alleviation of suffering through the diagnosis and treatment of human response, and advocacy in the care of individuals, families, communities and populations." That definition contains the four goals: promote health, prevent illness, treat human responses to health or illness, and advocate. The nurse's roles are provider of care, manager of care, collaborator with the health care team, and member of a profession.

Health assessment is "gathering information about the health status of the patient, analyzing and synthesizing those data, making judgements about nursing intervention based on the findings and evaluating patient care outcomes" (AACN). It comprises a health history (subjective) and a physical assessment (objective). Assessment is the first step of the nursing process.

The framework layered over it is the Clinical Judgment Model: recognize cues → analyze cues → prioritize hypotheses → generate solutions → take action → evaluate. Note how it maps onto the nursing process — assess, diagnose, plan, implement, evaluate — and that both are continuous rather than one-and-done.

Subjective vs. Objective Data

This distinction appears twice on the blueprint, which tells you it is worth more than one question.

Reliable historian. When taking subjective data, consider whether the patient is a reliable historian — are their statements consistent with the chart and internally consistent? If not, seek a secondary source.

The General Survey

The general survey begins at the first encounter — the first impression — and continues through the health history and physical. It is pure observation, gathered before you touch the patient.

Types, Frequency, and Steps of Assessment

Frequency varies by patient need. Units and facilities set a minimum, and the RN can decide more often is needed: frequent in intensive care, less frequent in long-term care, facility standard on med-surg, developmental assessment in children and memory in older adults in outpatient settings, and ongoing partial assessments in home care.

The five levels of holistic assessment

Holistic assessment means collecting subjective and objective data across every dimension to determine overall level of functioning — the whole person, not the diagnosis. The five levels: physiologic, psychological, sociocultural, developmental, and spiritual. This is its own blueprint row, so be able to name all five and give an example of each.

Steps of the assessment

Collect subjective data (interview, patient feedback) → collect objective data (physical exam, observed behaviour) → validate the data → document in the medical record.

Validation confirms the accuracy of what you collected. Be attentive to inconsistencies and gaps. Methods: compare subjective against objective findings, double-check or re-check the measurement, clarify with the patient, and verify with another provider — for example, asking a second nurse to confirm lung sounds.

Prioritizing what you found

Life-threatening first — always ABC. Then potential risks for life-threatening situations, which are more subtle: recognizing the signs and symptoms of an MI may take priority over dietary teaching. Then consider what is a high priority to the patient. Assessment directs care.

The Interview and the Health History

The nurse–patient relationship is the therapeutic foundation, built on verbal and non-verbal communication. It is professionally intimate — patients often disclose to a nurse what they have not told their family. That privilege carries an obligation: maintain professional boundaries. A little social chatting can help establish rapport, but discussing your own family member with the same illness, or how badly you need a day off, crosses into non-professional involvement. Never confuse privileged intimacy with friendship.

Components of the health history

Biographical/demographic data · reason for seeking care (chief concern) · history of present illness and symptoms · past health history and current health status · current medications and their indications · family history · functional assessment · psychosocial and lifestyle practices, risk assessment, family structure and function, environment and community · health promotion activities · review of systems.

Lifespan considerations in the interview

Young children: interview parents or legal guardians with the child present; observe the interactions and whether parental behaviour is appropriate to the situation. Older children: address questions to the child, letting parents fill in the gaps. Older adults: address them appropriately — ask what they wish to be called, and avoid "honey" and "sweetie." Do not rush. Keep the room warm enough.

Culture. Culture is the traits a group shares and passes along generationally. Cultural competence — the knowledge, attitudes, and skills to care for people of different cultures — is essential. Individualize the assessment to cultural, religious, and social beliefs; reduce anxiety; be alert to fear of being touched and to norms around disclosure; perform less invasive procedures first; and recognize that a patient may prefer an examiner of the same gender.

The Four Techniques, Positions, and Preparation

The four techniques of physical assessment, in their normal order: Inspection → Palpation → Percussion → Auscultation.

Positions: standing, supine, Sims (left side-lying, lower arm behind, upper knee flexed — rectal and vaginal exams), lithotomy (pelvic), sitting (head, neck, chest, lungs), dorsal recumbent (on the back, knees bent, feet flat — abdominal assessment when the patient cannot tolerate lithotomy), prone (back and posterior), and knee–chest.

Preparation: gather equipment and ensure the environment is warm, quiet, well lit, and private. Let the patient rest before vital signs. Safety first: hand hygiene, gloves worn and changed appropriately, standard precautions, respiratory hygiene and cough etiquette, and protection from drainage, skin breakdown, and needlesticks.

Equipment: clean gloves, scale, stadiometer, thermometer, sphygmomanometer, watch with a sweeping second hand, stethoscope, ophthalmoscope, otoscope, tongue depressor, Snellen chart, tape measure, reflex hammer, cotton swab, coin or paper clip, lubricant, penlight, speculum, tuning fork.

Health, Wellness, and Illness

Morbidity is the incidence of disease in a population; mortality is the incidence of death.

Disparities in health care

Healthy People 2030 defines a health disparity as "a particular type of health difference that is closely linked with social, economic and/or environmental disadvantage." The key idea for an exam question: a disparity is not merely a difference in outcome — it is a difference tied to disadvantage. Social disadvantage shows up as minority and ethnic groups carrying higher risk of certain diseases; economic disadvantage as income, insurance, and cost shaping who gets screened; environmental disadvantage as neighbourhood conditions, housing, and access to healthy food.

Risk Factors

Risk factors increase the chance of illness and injury. As the number of risk factors increases, so does the probability of disease. The blueprint asks you to sort them into two columns.

The Three Levels of Prevention

Health promotion begins with a person motivated by the desire to increase well-being and health potential — not by the presence of disease. Be able to give two examples of each level; the Week 2 prep sheet asks for exactly that.

Screening at a glance

Grades from the U.S. Preventive Services Task Force: A and B are recommended, C offer selectively, D not recommended, I insufficient evidence.

Models of Health Promotion and Healthy People 2030

Healthy People 2030 sets data-driven national objectives to improve health and well-being over the decade. It includes 355 core (measurable) objectives plus developmental and research objectives, organized into five topic areas: Health Conditions, Health Behaviors, Populations, Settings and Systems, and Social Determinants of Health.

Health Literacy and Teaching

Health literacy is the ability to obtain, read, understand, and act on health information — performing internet searches, reading pamphlets, measuring medication doses, following instructions. The numbers the lecture emphasizes: roughly 54% of US adults aged 16–74 read at or below a sixth-grade level, and only about 12% of Americans are proficient in health literacy. It affects everyone, though minorities and people of lower socioeconomic status more commonly lack these skills.

Federal initiatives that made it a priority: the Affordable Care Act (2010) and the National Action Plan to Improve Health Literacy (DHHS). The takeaway: nurses must identify patients with limited health literacy in order for education to be effective.

The three learning domains

Teach-back — the ten elements

Teach-back should occur with every interaction, not once, and be practised in chunks, checking each time new information is presented.

1. Use a caring tone of voice and attitude.
2. Display comfortable body language and make eye contact.
3. Use plain language; avoid medical jargon.
4. Ask the patient to explain back in their own words.
5. Use non-shaming, open-ended questions.
6. Avoid questions answerable with yes or no.
7. Emphasize that the responsibility to explain clearly is on you.
8. If the patient cannot teach back correctly, explain again and re-check.
9. Use reader-friendly print materials to support learning.
10. Document use of, and patient response to, teach-back.

Plain language — the prep sheet exercise

"Negative" is the one that trips patients most — it sounds like bad news and means the opposite.

Vague, jargon — and the third failure: arithmetic

Plain language fixes jargon. It does not fix the other two ways an instruction fails, and the exam tests all three by offering options that are each defensible and asking for the best one. An instruction fails when it is jargon the patient does not know, when it is vague so the patient has to invent the standard, or when it is correct but requires the patient to calculate something. Arithmetic is a health-literacy barrier in its own right, independent of reading level — a patient who is anxious, in pain, or simply tired will get it wrong or give up on it.

The nursing process applied to teaching

Assess parameters affecting learning (recognize cues): knowledge and skills, readiness to learn and motivation, ability to learn, and learning strengths such as past success. → Hypothesize and draw conclusions. → Plan: generate solutions and develop a plan. → Implement: teaching strategies — printed material, role play, demonstration. → Evaluate the teaching, for example by documenting teach-back.

Prefixes, Suffixes, and Roots

The Week 1 prep sheet asks you to define these before lab. Learn the pieces and you can decode any combination the exam builds — which is exactly what "application in clinical scenarios" means.

Vital Signs Terminology

Assessment, Records, and Care Terminology

Every Step, in Order

This is the instructor's own Critical Skill Test: Assessment of Vital Signs checklist. Each line is marked Pass or Needs Remediation; if remediation is required you must make an appointment in the skills lab. Note that the test specifies the oral route for temperature.

The starred numbers, one more time

Other numbers worth knowing

Sequences and decision rules