The volumetric flow rate which is also commonly referred to as the rate of liquid flow or volume flow rate is the volume of a given fluid that flows within a unit of time it is usually denoted by the q symbol. This is an unprecedented time.
It is the dedication of healthcare workers that will lead us through this crisis.
Peak flow calculator. His predicted peak flow value would be 639 948 l min. Male loge pef 0 544 x loge age 0 0151 x age 74 7 height 5 48. Let s take for instance the case of a female aged 32 with a height of 175cm.
Or in the case of a male aged 27 with a height of 186 cm. Obtaining a mini wright contact site map. Her estimated peak flow value would be 467 4 l min.
Input and output support metric and imperial. The estimated expected peak expiratory flow peak flow quantifies asthma exacerbation severity. The flow rate calculator can also calculate the mass flow rate of liquids given the liquid density is known.
Previous equations used to calculate predicted pef have also been developed but were based on smaller sample sizes and often included only specific. Here is an online peak flow meter calculator for measuring your peak flow rate pefr. What is volumetric flow rate.
The emis predicted peak flow calculation used within its clinical systems is based on a published revision to the original nunn and gregg equation in 1973. Discharge rate given its diameter for a round pipe height width for a rectangular one and the velocity of the liquid or gas flowing through it. The revised nunn and gregg equation is as below and applies to ages 15 85 years.
Peak flow readings will be higher when patients are normal and lower when the airways are constricted. The peak expiratory flow pef is a person s maximum speed of expiration. You can use this pefr peak expiratory flow calculator for both male and.
Peak flow meter is a device used to monitor the ability of a person to breathe out air. With the help of this calculator the estimated value based on subject age gender and height can be compared to that obtained via physical measurement with a peak flow meter. Here is the peak flow calculator used to calculate normal flow rate values using the person s height age and measured peak flow.
Mdcalc loves calculator creators researchers who through intelligent and often complex methods discover tools that describe. Patient pharmacist researcher nurse doctor. How will the change affect me as a.
The peak flow calculator determines the pefr peak expiratory flow rate which is the maximum speed of expiration of a person. Age and height were significantly associated with peak expiratory flows pef in all subgroups. But if he already has a measured peak flow of 568 l min the percentage is 88 76.
Easily calculate the volumetric flow rate of a pipe a k a. Enter the age height in this pef calculator to know the normal predicted peak flow of a human s expiration. The rate at which a liquid flows will vary according to area of the pipe or channel through which it is passing and the velocity of the liquid.
Weight was associated with pef but this association disappeared when height was considered.