What constitutes an acceptable test

The following criteria need to be satisfied:

• At least three technically satisfactory readings.

• The volume-time traces are smooth and free from irregularities suggesting a slow start, submaximal effort or coughing.

• At least two of the readings of FEV1 should be within 100mL or 5% of each other.

• The reading has been continued for long enough for a volume plateau to be achieved. This can take up to 15 s in patients with severe COPD.

• The best FEV1 and FVC are reported and compared with predicted normal results.

• Temperature and atmospheric pressure measurement may be appropriate in hospital lung function laboratories, but not in primary care.

Sleep Apnea

Sleep Apnea

Have You Been Told Over And Over Again That You Snore A Lot, But You Choose To Ignore It? Have you been experiencing lack of sleep at night and find yourself waking up in the wee hours of the morning to find yourself gasping for air?

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