• Monitoring and evaluation of asthma severity should include peak expiratory flow (PEF) and oxygen saturation. In severe and life-threatening asthma, PEF measurement is not necessary arterial blood gases should be done if readily available • Early referral for critical care should be considered for asthma

The Estimated/Expected Peak Expiratory Flow (Peak Flow) quantifies asthma exacerbation severity.

While community transmission of the virus is occurring in your region, postpone spirometry and peak flow measurement within health care facilities unless there is an urgent need. If spirometry is needed urgently for clinical management, follow infection control recommendations.

peak flow meter or spirometer. PEF (PEAK EXPIRATORY FLOW): A test that measures the PEFR. PFM (PEAK FLOW METER): A simple device intended for home or clinic use, which allows a patient with asthma to measure his or her peak expiratory flow rates and compare them to expected ranges.

• Peak expiratory flow (PEF) increases more than 15% in 15–20 minutes after inhalation of rapid action beta2-agonists; or • PEF variability is greater than 20% over a 12 hour-period compared with morning

A peak flow meter helps manage moderate to severe asthma. It measures how open the airways are in your lungs. Your peak flow may drop, even before you have an asthma attack. A drop in your peak flow tells you that your asthma might be getting worse.

Peak expiratory flow rate (PEFR) is the volume of air forcefully expelled from the lungs in one quick exhalation, and is a reliable indicator of ventilation adequacy as well as airflow obstruction.

Normal peak flow readings vary, depending on your age, size, and sex. The range of normal peak flow readings is published on a chart, and doctors and nurses refer to the chart when they check your peak flow reading. In healthy people, peak flow readings vary slightly from time to time.

2018年6月4日 · Häggström, Mikael (2014) Peak Expiratory Flow Rate Chart Peak Expiratory Flow Rate Chart: Normal values for peak expiratory flow (PEF) EN 13826 or EU scale 680 660 640 620 600 580 560 540 520 E 500 480 460 440 420 40 380 36 32 30 15 20 25 30 35 40 45 50 55 Age (years) o 60 75 80 Height 190 cm or 75" 183cm or 72"

This document provides normal peak expiratory flow rate (PEF) values for men and women based on age and height. For men, readings up to 100 L/min lower than predicted are considered normal, and for women readings up to 85 L/min lower are normal. It also includes pediatric normal PEF values based on height.