Certified Patient Care Technician (CPCT) Certification Study Guide Notes

Vital Signs Overview

  • Vital signs are essential indicators of homeostasis and can reflect potential illness or a deviation from normal health.

  • Factors affecting vital signs include stress, food/fluid intake, medical conditions, age, and physical activity.

Temperature Measurement

  • Fever (Pyrexia): Commonly caused by infection, acts as the body's defense mechanism.

  • Symptoms accompanying fever include chills, anorexia, weakness, thirst, and body aches.

  • Temperature can be measured through various methods:

    • Oral: Using a digital thermometer.

    • Aural (Tympanic): In the ear with a tympanic thermometer.

    • Temporal Artery: Scanning the forehead with a temporal artery scanner.

  • Less common methods include axillary and rectal measurements.

  • Ingesting hot/cold liquids or cerumen in the ear can lead to inaccurate oral or tympanic results.

  • Older adults may have slightly lower body temperatures.

Expected Temperature Ranges (Adults)

  • Oral: 36.5° to 37.5° C (97.6° to 99.6° F)

  • Tympanic: 37° C (98.6° F)

  • Axillary: 36° to 37° C (96.6° to 98.6° F)

  • Temporal: 36.5° to 37.5° C (97.6° to 99.6° F)

  • Rectal: 37.5° C (99.6° F)

Heart Rate Measurement

  • Pulse Palpation: Use two fingers to palpate the pulse on areas where you can push the artery against a bone.

    • Adults: Radial pulse (wrist).

    • Children: Brachial pulse (inside upper arm).

    • Emergency Situations: Carotid pulse (neck).

  • Auscultation: You can listen to heart sounds with a stethoscope to determine the apical pulse.

  • Pulse Characteristics: Consider rate, rhythm, and volume:

    • Example: "70/min (rate), regular (rhythm), thready (strength)."

  • Factors influencing heart rate include patient condition, age, time of day, activity level, and medications.

Expected Heart Rate Ranges

  • Adults (16+ years): 60 to 100/min

  • Newborns (birth to 1 month): 120 to 160/min

  • Infants (1 to 12 months): 80 to 140/min

  • Toddlers (1 to 3 years): 80 to 130/min

  • Preschoolers (3 to 5 years): 80 to 120/min

  • School-Age (6 to 15 years): 70 to 100/min

Respiratory Rate Measurement

  • Evaluate respiratory rate based on rate, rhythm, and depth.

  • Normal Adult Respiratory Rate: 12 to 20/min

  • Note: Rates may decrease with age or health problems.

  • Conditions Indicating Abnormalities:

    • An elevated rate (tachypnea > 20/min) can indicate distress.

    • A reduced rate (bradypnea < 10/min) may be drug-induced.

  • Assessment: One respiration consists of an inhalation and an exhalation.

  • Use auscultation to listen for abnormal sounds (e.g., wheezing).

Expected Respiratory Rate Ranges

  • Newborns: 30 to 50/min

  • Adults (16+ years): 12 to 20/min

Blood Pressure Measurement

  • It is important to know how to measure blood pressure manually with a stethoscope and cuff:

    1. Place the cuff 2.5 cm (1 inch) above the inner elbow crease.

    2. Inflate cuff until the radial pulse is no longer felt; continue inflating an additional 30 mm Hg.

    3. Place stethoscope over the left brachial artery and slowly release cuff pressure.

    4. The first sound heard = systolic; the last sound = diastolic.

  • Cautions: Avoid using the affected arm if the patient has had a mastectomy or an IV.

Pulse Oximetry

  • Pulse oximetry measures oxygen saturation and is crucial for patients with respiratory disorders.

  • Attach the device probe to the patient's finger (remove nail polish for accuracy).

  • Normal Pulse Oximetry Range: 95% or higher, although chronic respiratory patients may function below this.

  • If readings are low, notify the nurse and check for adequate perfusion (i.e., warm skin, pink mucous membranes).

  • Recognize symptoms of hypoxia: anxiety, confusion, increased respiratory rate.

Capillary Refill Test

  • A method to assess circulation, measuring the time for blood to return to distal capillaries after blanching the skin by pressure.