Pulmonary volumes Males Females IRv 3300 1900 )Inspiratory capac W 500500 1000 700 ctional residua Inspiratory Residual volume 1200 1100 capacity reserve Inspiratory 6000ml4200ml volume capac ity (IRV) Resting tida Vital volume capacity T=500m) lung capacity Volume Expiratory (ml) reserve volume (ERV) Functional residua capacity Residual volume Minimal volume (30-120m)
6
Pulmonary Capacities A Capacity is composed of two or more wolynes Inspiratory capacity(.吸气量) Tidal volume plus inspiratory reserve volume Functional residual capacity(功能残气量,FRC) Expiratory reserve volume plus the residual volume Ⅴ ital capacity(肺活量,VC) Sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume Total lung capacity(肺总量,TLC) Sum of inspiratory and expiratory reserve volumes plus the tidal volume and residual volume
7 Pulmonary Capacities A Capacity is composed of two or more volumes • Inspiratory capacity （深吸气量） – Tidal volume plus inspiratory reserve volume • Functional residual capacity （功能残气量, FRC） – Expiratory reserve volume plus the residual volume • Vital capacity （肺活量, VC） – Sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume • Total lung capacity （肺总量, TLC） – Sum of inspiratory and expiratory reserve volumes plus the tidal volume and residual volume
Pulmonary volumes Males Females IRv 3300 1900 )Inspiratory capac W 500500 1000 700 ctional residua Inspiratory Residual volume 1200 1100 capacity reserve Inspiratory 6000ml4200ml volume capac ity (IRV) Resting tida Vital volume capacity T=500m) lung capacity Volume Expiratory (ml) reserve volume (ERV) Functional residua capacity Residual volume Minimal volume (30-120m)
8
RV/TLC normally less than 0.25 Increase by the obstructive pulmonary disease(rv) Increase during the restrictive lung disease (TLC)
9 RV/TLC • Normally less than 0.25 • Increase by the obstructive pulmonary disease (RV) • Increase during the restrictive lung disease (TLC)
Minute and alveolar ventilation Minute ventilation: Total amount of air /moved Into and out of respiratory system per minute Respiratory rate or frequency: Number of breaths taken per minute Anatomic dead space: Part of respirato epi ory system where gas exchange does not take place Alveolar ventilation: How much air per minute enters the parts of the respiratory system in which gas exchange takes place 10
10 Minute and Alveolar Ventilation • Minute ventilation: Total amount of air moved into and out of respiratory system per minute • Respiratory rate or frequency: Number of breaths taken per minute • Anatomic dead space: Part of respiratory system where gas exchange does not take place • Alveolar ventilation: How much air per minute enters the parts of the respiratory system in which gas exchange takes place