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Leo Ricen, Ph.D., M.D.
JAMA. 1917;LXVIII(25):1908. doi:10.1001/jama.1917.04270060316020.
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I have observed a type of breathing which resembles the Cheyne-Stokes respiration in its first phase, but differs from it in its second phase, thereby constituting a type by itself.

The Cheyne-Stokes type of breathing is usually represented in a graphic manner, as in Figure 1, in which ab corresponds to the period of apnea, which is followed by a series of respirations (bc) at first short and shallow and then gradually increasing in rate and volume until a maximum is reached, after which a gradual return to the apneic state takes place.

The type of breathing which I have observed is graphically represented by Figure 2. In it we have the same apneic state (cb) followed by a gradual increase period (bc); but the period ca (Fig. 1) of gradual decrease is lacking, being replaced by the period of apena, which sets in immediately afther the


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