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
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2
Q

most common cause

A

COPD

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3
Q

Signs

A
Pa02<8Kpa 
elevated PaCo2
normal Ph of blood 
elevated bicarbonate 
reduced FEV1/FVC
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4
Q

Symptoms

A
Orthopnea
SOB 
ankle swelling 
recurrent chest infections 
morning headaches due the build up of C02 
sleep disturbances
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5
Q

Treatment

A

02 therapy
Domicillary Non-invasive ventilation
T-iPPV- tracheotomies intermittent positive pressure ventilator

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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

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