Medical Terminology in Emergency Care

Emergency Care: Medical Terminology Notes

Introduction to Medical Terminology

  • Importance for EMTs: EMTs require a thorough understanding of medical terminology.   - Key knowledge areas:
        - Key terms
        - Symbols
        - Abbreviations

  • Word Understanding:   - Determine meanings of unknown words by:     - Understanding how terms are constructed     - Learning definitions for word parts   - Mastery of medical jargon leads to effective communication.

Terminology Origins

  • Eponyms:   - Definitions: Names attributed to diseases, devices, procedures, or drugs after the individual who described them.   - Example: “Diesel engine” named after Rudolf Diesel.   - Variations: Sometimes appear in possessive form.     - Example: Hodgkin's disease (also known simply as Hodgkin disease).   - Examples of Eponyms:     - McBurney point     - Foley catheter     - Babinski reflex     - Crohn disease     - Cesarean section     - Levine sign     - Apgar score

  • Homonyms:   - Definitions: Word pairs that sound nearly the same; incorrect pronunciation may cause medical errors.     - Examples:       - Ileum vs. ilium       - Dysphagia vs. dysphasia

  • Antonyms:
      - Definitions: Pairs of word roots, prefixes, or suffixes with opposite meanings.

  • Synonyms:
      - Definitions: Pairs of word roots, prefixes, or suffixes with similar meanings.

Anatomy of a Medical Term

  • Structure: Medical terms consist of distinct parts, each serving specific functions; changing/removing a part alters its meaning.

  • Components:   - Word Root:     - Main part or stem of a word, conveying essential meaning, often indicating a body part.   - Prefix:     - Appears at the beginning of a word, usually describes location or intensity, gives specificity to the word root.   - Suffix:     - Appears at the end of a word, generally indicates:       - Procedure       - Condition       - Disease       - Part of speech   - Combining Vowel:     - Connects word root to a suffix or another root, commonly 'o,' but can also be 'i' or 'e'.     - Utilized when joining:       - A suffix beginning with a consonant       - Another word root

  • Significance of Components:   - Correct spelling is crucial.   - Example:     - -phasia means speaking; -phagia means eating or swallowing.     - Dys- means difficult or painful.
          - Dysphasia: difficulty speaking.       - Dysphagia: difficulty eating or swallowing.   - Importance of anatomical knowledge and context in word usage.

Word Building Rules

  • Rules Summary:   - Prefix is at the term's beginning.   - Suffix is at the term's end.   - A combining vowel is used when:     - The suffix begins with a consonant.     - A term has multiple word roots.

Plural Endings in Medical Terms

  • Common rules for forming plurals:   - Add 's': example, lung → lungs.   - Change 'a' to 'ae': example, vertebra → vertebrae.   - Change 'is' to 'es': example, diagnosis → diagnoses.   - Change 'ex' or 'ix' to 'ices': example, apex → apices.   - Change 'on' or 'um' to 'a': examples, ganglion → ganglia, ovum → ova.   - Change 'us' to 'i': example, bronchus → bronchi.

Special Word Parts

  • Prefixes indicating numbers:   - Examples:     - uni- (one)     - bi- (two)     - multi- (many)     - prim- (first)     - dipl- (double)

  • Prefixes indicating colors:   - Examples:     - cyan/o (blue)     - leuk/o (white)     - erythr/o (red)     - melan/o (black)

  • Prefixes indicating positions/directions:   - Examples:     - ab- (away from)     - ad- (toward)     - circum- (around)     - trans- (across)     - epi- (upon)     - supra- (above)

Components of Medical Terms

  • Compound Terms: Formed from two or more word combinations.   - Example: Smallpox.

  • Words from Parts:
      - Word roots with meaning:     - therm meaning “heat.”   - Including combining forms:     - therm/o + meter = thermometer.   - Examples of prefixes and suffixes:     - dys-pnea (difficult breathing), tachy-pnea (rapid breathing),     - arthr-itis (joint inflammation), hemophil-iac (blood disorder).

Abbreviations and Acronyms

  • Acronym:   - Definition: An abbreviation formed from initial components that can be pronounced as a word.   - Example: CPAP (continuous positive airway pressure).

Breaking Medical Terms Apart

  • Deciphering Terms:   - Define using:     - Suffix first     - Then prefix     - Finally, the word root.

  • Example Decoding:   - Cholecystitis:     - Break down: chol/e (bile), cyst (closed sac), -itis (inflammation).     - Combined meaning: "bile-sac-inflammation" = inflammation of the gallbladder, which stores bile.   - Nephropathy:     - Breakdown: nephr/o (kidney), -pathy (disease).     - Meaning: Disease of the kidney.   - Dysuria:     - Breakdown: dys- (difficult/painful), ur (urine), -ia (condition of).     - Meaning: Painful urination.   - Hyperemesis:     - Breakdown: hyper- (excessive), emesis (vomiting).     - Meaning: Excessive vomiting.   - Analgesic:     - Breakdown: an- (without), alges (pain), -ic (pertaining to).     - Meaning: Pertaining to no pain.

Colors in Medical Terms

  • Some word roots describe colors.

  • Important for accurate terminology in medical contexts.

When to Use (and Not Use) Medical Terms

  • Guidelines:   - Avoid using complex terms with patients or family; simple language enhances clarity.   - Consider potential ambiguities when communicating.

Language of Anatomy and Physiology

  • Anatomy: Study of body structure.

  • Physiology: Study of body function.

Directional Terms

  • Anatomic Position:   - Defined as facing forward, hands at the sides, palms forward.

  • Midline: Description of body orientation.   - Medial: Closer to midline.   - Lateral: Farther from midline.

  • Common Directional Terms:   - Bilateral: Both sides.   - Unilateral: One side.   - Midaxillary Line: A line passing through the axilla (armpit).

Directional Terms Defined

  • Anterior (Ventral): Front.

  • Posterior (Dorsal): Back.

  • Superior: Above or higher in position.

  • Inferior: Below or lower in position.

  • Proximal: Nearer to the torso.

  • Distal: Farther from the torso.

  • Palmar: Pertaining to the palm of the hand.

  • Plantar: Pertaining to the sole of the foot.

Positional Terms

  • Supine: Patient lying on back.

  • Prone: Patient lying face down.

  • Recovery Position: Patient lying on side, recommended for unconscious non-trauma patients.

  • Fowler's Position:   - Seated straight up.   - Semi-Fowler: Patient reclined backward in a semi-sitting stance.

Common Directional, Movement, and Position Terms

  • Flexion: Bending of a joint.

  • Extension: Straightening of a joint.

  • Adduction: Motion toward the midline.

  • Abduction: Motion away from the midline.

Chapter Review

  • Medicine's unique language is essential for EMTs in communicating with other professionals.

  • Medical terms typically consist of roots with prefixes and/or suffixes.

  • Mastery of medical terminology facilitates better comprehension and cooperation in medical settings.

  • Anatomical terminology enhances precision and accuracy in descriptions of conditions and procedures.

Questions to Consider

  • Are my medical terms accurate and descriptive?

  • Can I identify critical organs and structures in relation to a patient’s complaint or injury?

Critical Thinking Scenarios

  • Scenario 1: Interpreting injuries after a dirt bike accident involving a teenage boy; includes lacerations and potential fractures. Communicate findings accurately during radio referral to hospital staff.

Appendices

  • Appendix 1: Describes body structure, regions including the head, torso, and extremities.

  • Appendix 2: Illustrates anatomic positions with accompanying directional labels.

  • Appendix 3: Outlines body planes, including transverse, sagittal, and frontal.

  • Appendix 4: Details abdominal quadrants, associated organs and structures within each quadrant.