Haldane transformation

Hal·dane trans·for·ma·tion

(hawl'dān),
the multiplication of inspired oxygen concentration by the ratio of expired to inspired nitrogen concentrations in the calculation of oxygen consumption or respiratory quotient by the open circuit method.

Haldane,

John S., Scottish physiologist at Oxford, 1860-1936.
Haldane apparatus - a device used for analyzing respiratory gases.
Haldane chamber - an obsolete chamber for metabolic studies on animals.
Haldane effect - the promotion of carbon dioxide dissociation by oxygenation of hemoglobin.
Haldane relationship - a mathematical relationship between the equilibrium constant of an enzyme-catalyzed reaction and all of that enzyme's kinetic parameters.
Haldane transformation - multiplication of inspired oxygen concentration by the ratio of expired to inspired nitrogen concentration in the calculation of oxygen consumption or respiratory quotient by the open circuit method.
Haldane tube - a tube for securing human alveolar air samples.
Haldane-Priestley sample - an approximation of alveolar gas obtained from the end of a sudden maximal expiration into a Haldane tube.
References in periodicals archive ?
As outlined previously, the Haldane transformation is routinely used in indirect calorimetry techniques, utilising the inert nature of nitrogen in lung gas exchange.
A modification of the Haldane transformation is applied to the measured inspired tidal volume, and this data is then integrated with the gas concentration curves to calculate the consumed [O.
The data were compared against the reverse Fick method and against standard indirect calorimetry using the Haldane transformation.