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Lung VolumeAka: Inspiratory Reserve Volume, Tidal Volume, Inspiratory Capacity, Expiratory Reserve Volume, Residual Volume, Total Lung Capacity

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  1. See Also
    1. Pulmonary Function Test
    2. Functional Residual Capacity
    3. Vital Capacity
  2. Inspiratory Volumes
    1. Inspiratory Reserve Volume (IRV)
      1. Maximal inspired volume from end-tidal inspiration
    2. Tidal Volume (Vt)
      1. Volume inspired and expired with each normal breath
      2. Minimum volume: 3 ml/kg
      3. Normal volume: 6-7 ml/kg
    3. Inspiratory Capacity (IC)
      1. Maximal volume inspired from resting expiratory level
      2. Calculation: IRV + Vt
  3. Expiratory Volumes
    1. Expiratory Reserve Volume (ERV)
      1. Maximal expired volume from end-tidal inspiration
      2. Normal: 25% of Vital Capacity
    2. Residual Volume (RV)
      1. Volume remaining in lungs after maximal expiration
      2. Normal adult: 1.0 to 2.4 Liters
    3. Functional Residual Capacity (FRC)
      1. Volume remaining in lungs at resting expiratory level
  4. Overall Lung Volumes
    1. Vital Capacity (VC)
      1. Maximal volume expelled after maximal inspiration
    2. Total Lung Capacity (TLC)
      1. Volume in lungs at end of maximal inspiration
      2. Calculation: VC + RV
      3. Normal adult: 4-6 Liters
  5. References
    1. Rollings (1984) Facts and Formulas, McNaughton & Gunn
    2. Marini (1987) Respiratory Medicine, Williams & Wilkins

Expiratory Reserve Volume (C0015326)

Definition (MSH)The extra volume of air that can be expired with maximum effort beyond the level reached at the end of a normal, quiet expiration. Common abbreviation is ERV.
ConceptsLaboratory or Test Result (T034) , Organ or Tissue Function (T042)
EnglishERV, Expiratory Reserve Volume, Expiratory Reserve Volumes
Spanishvolumen de reserva espiratorio, VRE
CreditsDerived from the NIH UMLS (Unified Medical Language System)


Inspiratory Reserve Volume (C0021613)

Definition (MSH)The extra volume of air that can be inspired with maximal effort after reaching the end of a normal, quiet inspiration. Common abbreviation is IRV.
ConceptsLaboratory or Test Result (T034) , Organ or Tissue Function (T042)
EnglishInspiratory Reserve Volume, Inspiratory Reserve Volumes, IRV
Spanishvolumen de reserva inspiratoria, VRI
CreditsDerived from the NIH UMLS (Unified Medical Language System)


Tidal Volume (C0040210)

Definition (MSH)The volume of air inspired or expired during each normal, quiet respiratory cycle. Common abbreviations are TV or V with subscript T.
Definition (CSP)includes tidal volume, inspiratory and expiratory reserve volumes, residual volume, respiratory dead space, pulmonary ventilation, maximal voluntary ventilation, and vital capacity.
ConceptsFinding (T033)
EnglishLung tidal volume, respiratory airway volume, Tidal Volume, Tidal Volumes, V T, V<sub>T</sub>, V>T<, VT
Spanishvolumen corriente pulmonar
CreditsDerived from the NIH UMLS (Unified Medical Language System)


Lung volume (C0231953)

ConceptsOrgan or Tissue Function (T042)
EnglishLung volume
Spanishvolumen pulmonar
CreditsDerived from the NIH UMLS (Unified Medical Language System)


Lung residual volume measurement (C0429713)

ConceptsLaboratory Procedure (T059)
EnglishLung residual volume measurement, residual volume
Spanishmedición del volumen pulmonar residual, medicion del volumen pulmonar residual
CreditsDerived from the NIH UMLS (Unified Medical Language System)



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