Pulsus

{pul’-sus) [L.]. Pulse. P. alter nans, one in which there is a regular alternation of strong and weak beats. The weak beat may be imperceptible, in which case two heart-beats correspond to only one beat of the pulse. P. bigeminus, one in which al the beats occur in pairs, so that a longer pause follows every two beats. P. celer, a quick, short pulse. P. celer et alt us, a quick, full pulse, seen especially in aortic regurgitation. P. paradoxicus, P. paradox us. See Pzelse, Paradoxic. P. quadrigeminus, P. trigeminus, a pulse in which a pause occurs after every fourth or third beat respectively. 536