文档介绍：Respiratory function
仁济医院急诊科郑翠霞
ventilation
Gas exchange
Airway(patency)
Respiratory muscle
Air volume
Effective capillary bed
Airway pressure gradient
Respiratory Function Test
Spirolmetry
Airway resistance & compliance
Diffusion capacity measure CO
Exercise respiratory function test
Spirometry Terms
VC (vital capacity)
TV (tidal volume)
FEV1(1st second forced expiratory volume)
ERV (expiratory reserve volume)
IRV (inspiratory reserve volume)
IC (inspiratory capacity)
Static parameters
TLC (total lung capacity)
RV (residual volune)
FRC (functional residual capacity)
Forced expiratory values
Time lung function / time-volume curve
Normal
Decreased overall flows
Decreased flow at high volumes
Decreased flow with normal flow-volume relationship
MVV(maximal minute ventilation) =FEV1* 35
VE( minute ventilation) = TV* RR(respiratory rate)
Respiratory function abnormality:
Obstructive: FEV1<70%FVC; MVV< 80%pred
seen in obstructive pulmonary diseases(COPD) & asthma
Limitative:
VC< 80%pred, MVV
pleural, chest wall, intestinal lung disorders