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Lung spirometry showing a restrictive pattern.

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Presentation on theme: "Lung spirometry showing a restrictive pattern."— Presentation transcript:

1 Lung spirometry showing a restrictive pattern.
 Lung spirometry showing a restrictive pattern. Note the normally shaped, but proportionately reduced, flow–volume loop. Flow is on the y axis, with expiratory flow in an upward direction. Volume is on the x axis, with full inspiration at 0, and full expiration at the right hand limit of the loop. Predicted loops for height, age, and sex are shown by the bold line, and error bars show the normal ranges for peak expiratory flow, and flow at 25%, 50%, and 75% of expired volumes. A Natarajan, and H Davies Arch Dis Child Educ Pract Ed 2004;89:ep70-ep75 Copyright © BMJ Publishing Group Ltd & Royal College of Paediatrics and Child Health. All rights reserved.

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