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19 Cards in this Set
- Front
- Back
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Nasal Camille %o2 and flow rates |
24-40% 1-4L/min |
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Hudson uncontrolled mask |
30-60% o2 5-10L/min flow rate |
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Non-rebreathe uncontrolled mask |
85-90% 15L flow rate |
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When to use non-rebreathe masks |
Acutely unwell patients |
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Venturi mask |
Choose fixed percentage of O2 |
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What do you use oxygen to treat |
Hypoxaemia |
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Risk of acute hypoxaemia |
Dysrhythmia and organ failure |
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Who’s most at risk of hypercapnia if put on high dose o2 |
COPd CF Kyphoscoliosis NMD Obesity hypoventilation |
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Why not give too much o2 to COPD |
Often rely on hypoxaemic drive. Over correct their pO2 may switch off this respiratory drive leading to worsening acidosis and further CO2 retention |
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When prescribing oxygen what needs to be stated |
1) target oxygen saturation range 2) the delivery device 3) the dose (flow rate/ percentage inspired o2) |
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What can untreated hypoxaemic patients get |
Pulmonary artery hypertension Right ventricular hypertrophy Right ventricular failure COR pulmonale |
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How long is 02 needed in COPD patients to be effective |
At least 15 hours. Ideally 24/7 |
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Benefits of LTOT |
Improved long term survival Prevention of deterioration in pulmonary hypertension Increased renal blood flow Reduced cardiac arrhythmias |
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Apnoea |
Cessation of airflow for 10 secs or longer |
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Risk factors of sleep apnoea |
Male Obesity Neck circumference greater than 43cm Smoking Alcohol Craniofacial abnormalities |
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Investigations for sleep apnoea |
Epworth sleepiness scale Sleep studies (polysomnography) |
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Mainstay of treatment sleep apnoea |
CPAP (continuous positive airway pressure) |
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Other treatments for sleep apnoea |
Mandibular advancement devices Surgery Reduction in weight Avoid sleeping supine |
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Clinical features of sleep apnoea |
Snoring Nocturnal choking/ waking with a start Unrefreshing/ restless sleep Morning dry mouth Excessive daytime sleepiness (sleeping at appropriate times) |
