He invented the spirometer to measure what he called the vital capacity, ie, the capacity to live. Much later, the concept of the timed vital capacity, which ...
Autres questions
Who invented the first spirometer?
John Hutchinson
175 years have elapsed since John Hutchinson introduced the world to his version of an apparatus that had been in development for nearly two centuries, the spirometer.
5 oct. 2021
What is Hutchinson's spirometer?
John Hutchinson, a surgeon, recognized that the volume of air that can be exhaled from fully inflated lungs is a powerful indicator of longevity. He invented the spirometer to measure what he called the vital capacity, ie, the capacity to live.
What is a good number to hit on a spirometer?
Average values in healthy patients aged 20-60 range from 5.5 to 4.75 liters in males and from 3.75 to 3.25 liters in females. This parameter measures the amount, or volume, exhaled by a patient in the first second of the expiration after a full inspiration.
What is a normal score on a spirometer?
Interpretations of spirometry results require comparison between an individual's measured value and the reference value. If the FVC and the FEV1 are within 80% of the reference value, the results are considered normal. The normal value for the FEV1/FVC ratio is 70% (and 65% in persons older than age 65).
Hutchinson invented the spirometer, a device for measuring lung capacity, which he used while evaluating candidates for life insurance as a surgeon for ...
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The spirometer was originally invented in the 1840's by John Hutchinson an English surgeon. The device (which was as tall as an adult patient) was essentially ...
He invented the spirometer to measure what he called the vital capacity, ie, the capacity to live. Much later, the concept of the timed vital capacity, which ...
He invented the spirometer to measure what he called the vital capacity, ie, the capacity to live. Much later, the concept of the timed vital capacity, which ...
5 oct. 2021 · Hutchinson's spirometer consisted of a counterbalanced bell inverted in water, whereby breathing into a connected pneumatic tube resulted in ...
He invented the spirometer to measure what he called the vital capacity, ie, the capacity to live. Much later, the concept of the timed vital capacity, which ...
John Hutchinson, the inventor of the spirometer--hisnorthcountrybackground, life in London, and scientific achievements. · View on publisher site · PDF (1.9 MB)
6 déc. 2013 · Within a few years, improved versions of his spirometer appeared across Europe and the United States (Figure 2). No doubt, Hutchinson deserves a ...