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Diagnosis Prognosis Therapy

Asthma exacerbation: normal oxygen saturation does not exclude respiratory failure Level of evidence 4 Expiry Date November 2003 Acute asthma chest x-rays were of little benefit in uncomplicated cases. Level of evidence 4 Expiry Date November 2002 Airflow limitation clinical examination helped diagnosis, but did not help rule it out. Level of evidence 2a Expiry Date May 2003  Asthma near-fatal attacks: psychiatric symptoms and denial were common. Level of evidence 4 Expiry Date November 2002 Asthma patients and clinicians were not good at estimating peak flows. Level of evidence 4 Expiry Date November 2002 Asthma acute exacerbation: FEV 1 did not predict abnormal blood gases accurately. Level of evidence 4 Expiry Date November 2002 COPD, asthma uncomplicated cases were unlikely to have a chest X-ray that led to a change in management Level of evidence 2b Expiry Date November 2002 Dyspnoea clinical examination may help to determine cause. Level of evidence 1a Expiry Date September 2003 Hypoxia not indicated by vital signs. Level of evidence 4 Expiry Date September 2002