Vital Signs: Comprehensive Nursing Assessment & Physiology

What are the four vital signs?

Temperature, pulse, respirations, and blood pressure.

What is the normal range for oral temperature in adults?

96.4-99.5°F (35.8-37.5°C).

What is bradycardia?

A slower than normal heart rate, typically below 60 bpm.

What does the term 'afebrile' mean?

Having a normal body temperature; not having a fever.

What is the role of the hypothalamus in thermoregulation?

It maintains core body temperature by initiating heat production or loss responses.

What is hyperthermia?

A condition where the body's heat-control mechanisms are overwhelmed, not due to a change in the hypothalamic set point.

What is the significance of Korotkoff sounds?

They are the sounds used to determine blood pressure during auscultation.

What factors can affect body temperature?

Circadian rhythm, age, biological sex, physical activity, state of health, and environmental temperature.

What is the normal pulse rate for adults?

60-100 beats per minute (bpm).

What is tachycardia?

A faster than normal heart rate, typically above 100 bpm.

What is the definition of hypotension?

Abnormally low blood pressure, typically below 90/60 mm Hg.

What does the term 'dyspnea' refer to?

Difficulty or labored breathing.

What is the normal respiratory rate for adults?

12-20 breaths per minute.

What is the definition of 'apnea'?

A temporary cessation of breathing.

What is the difference between systolic and diastolic pressure?

Systolic pressure is the pressure in the arteries during heartbeats, while diastolic pressure is the pressure between beats.

What is the normal range for blood pressure in adults?

Less than 120/80 mm Hg.

What is the significance of an auscultatory gap?

It is a period during blood pressure measurement where no sounds are heard, potentially leading to inaccurate readings.

What is the definition of 'eupnea'?

Normal, unlabored breathing.

What is a fever (pyrexia)?

An elevated body temperature caused by pyrogens that raise the hypothalamic set point.

What are the physical effects of fever?

Decreased appetite, headache, hot/dry skin, flushed face, thirst, muscle aches, fatigue.

What is the term for a core temperature below 35°C (95°F)?

Hypothermia.

What is the purpose of therapeutic hypothermia?

To lower metabolic demand after cardiac arrest or brain injury.

What is the most accurate site for assessing core temperature?

Rectal temperature.

What is the effect of physical activity on pulse rate?

It increases the pulse rate during exercise.

What is the impact of stress on pulse rate?

Stress can increase the pulse rate.

What is the grading scale for pulse strength?

0 (absent), +1 (diminished), +2 (normal), +3 (bounding).

What is the primary source of heat production in the body?

Metabolism.

What is the mechanism of heat loss through radiation?

Heat is lost to nearby objects without physical contact.

What is a pulse deficit?

The difference between apical and radial pulse rates, indicating heartbeats not reaching the periphery.

What is the preferred site for assessing pulse in children under 2 years?

Apical pulse.

Where is the apical pulse located?

5th intercostal space, left midclavicular line.

What is eupnea?

Normal, unlabored breathing at a rate of 12-20 breaths/min.

What is tachypnea?

A respiratory rate greater than 24 breaths/min, often shallow.

What does hyperventilation indicate?

An increase in both rate and depth of breathing, often due to extreme exercise or fear.

What is the normal range for systolic blood pressure?

Less than 120 mm Hg.

What is orthostatic hypotension?

A drop in systolic blood pressure of 20 mm Hg or more when standing.

What factors can affect blood pressure?

Age, biological sex, circadian rhythm, food intake, exercise, weight, emotional state, body position, race, and medications.

What is the most common site for assessing blood pressure?

Brachial artery.

What equipment is used for blood pressure measurement?

Sphygmomanometer and stethoscope.

What is the normal respiratory pattern for infants?

They breathe more rapidly than adults.

What is the primary stimulus for increasing respiratory rate?

Increased carbon dioxide levels.

What is the definition of dyspnea?

Difficult or labored breathing.

What is the purpose of using a Doppler ultrasound in pulse assessment?

To detect pulses that are difficult to palpate.

What is the role of the kidneys in blood pressure regulation?

They regulate extracellular fluid volume, controlling blood pressure over time.

What is the significance of measuring blood pressure in both arms?

To identify any discrepancies and use the arm with the higher reading for subsequent measurements.

What is Cheyne-Stokes respiration?

A pattern of alternating deep/rapid breathing and periods of apnea.

What is the normal pulse pressure range?

Approximately 40 mm Hg (systolic - diastolic).

What is the effect of exercise on blood pressure?

It typically increases systolic blood pressure during activity.

What should be done before measuring blood pressure?

Ensure the patient is seated, back supported, and has rested for 5 minutes.

What is the impact of medications on respiration?

Narcotics/sedatives can decrease respiratory rate, while stimulants can increase it.

What is the recommended method for measuring pulse?

Use 2-3 fingers on the radial site and count for one full minute.

What is the definition of apnea?

No breathing.

What is the importance of reporting high/low temperature readings?

They may indicate a need for medical evaluation.