Chronic ventilatory failure Flashcards
1
Q
Aetiology?
A
Respiratory disorders: -COPD -Bronchiectasis -OSA Muscular disorders: -kypholiosis of the chest Hypoventilation Muscular weakness in respiratory muscles: -muscular dystrophy -Motor neurone disease
2
Q
most common cause
A
COPD
3
Q
Signs
A
Pa02<8Kpa elevated PaCo2 normal Ph of blood elevated bicarbonate reduced FEV1/FVC
4
Q
Symptoms
A
Orthopnea SOB ankle swelling recurrent chest infections morning headaches due the build up of C02 sleep disturbances
5
Q
Treatment
A
02 therapy
Domicillary Non-invasive ventilation
T-iPPV- tracheotomies intermittent positive pressure ventilator
6
Q
Investigations
A
ABG in the morning- measure of hypoventilation
Overnight oximetry- measure of hypoventilation
Fluoroscopic screening of the diaphragm
Vital capacity comparison when standing and sitting- Lung function test
-mouth pressures- lung function test