peak flow


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peak flow

The maximum volume of air that can be expelled from the lungs during a vigorous exhalation. Its measurement is used to determine the degree of respiratory impairment in patients with obstructive lung diseases.
See also: flow
References in periodicals archive ?
In this study, the main purpose was to simulate and escalate accuracy in peak flow estimation and subsequent results was in line with this objective.
But DON'T alter your prescribed drugs without your doctor's advice, and keep on using your peak flow meter to check you're okay.
All these centres need basic respiratory devices such as nebulisers, peak flow meters and pulse oximeters in order to provide better healthcare services to the patients.
The range of peak flow changes percent for validation must be between %+50 and %-50.
As indicated above, a normal loop has a straight line between peak flow and zero flow but any concavity along that line indicates varying degree of airway obstruction with the degree of obstruction in proportion to the degree of concavity.
Research by the schools of Medicine and Electronic and Electrical Engineering, with experts at the University of Aarhus Denmark, on five types of peak flow meters revealed some monitoring lung capacity of a patient give incorrect readings.
Sheriff Gibson said: "Dr McQuire should have been alerted by the low peak flow reading that Laura was suffering an attack of acute severe asthma.
TM] System automatically calculates green, yellow, and red peak flow zones when the top of the AutoZone color bar is set to a patient's personal best or predicted average PEFR.
Your doctor may tell you to use a peak flow meter to help you know when to take your inhaled quick-relief medicines.
The system is designed to treat stormwater to reuse standards by filtering a peak flow of 2.
Their Series 1120 Flow/ Volume) Simulator is for testing and calibrating peak flow meters, spirometers; and research requiring ATS and custom waveforms.