pulsus alternans


Also found in: Wikipedia.

pulsus

 [pul´sus] (L.)
pulsus alter´nans alternating pulse.
pulsus bige´minus bigeminal pulse.
pulsus bisfe´riens a pulse characterized by two strong systolic peaks separated by a midsystolic dip, most commonly occurring in pure aortic regurgitation with stenosis.
pulsus ce´ler quick pulse.
pulsus dif´ferens inequality of the pulse observable at corresponding sites on either side of the body.
pulsus paradox´us paradoxical pulse.
pulsus par´vus et tar´dus a small hard pulse that rises and falls slowly.
pulsus tar´dus slow pulse.

al·ter·nat·ing pulse

mechanical alternation; a pulse regular in time but with alternate beats stronger and weaker, often detectable only with the sphygmomanometer or other pressure measurement and usually indicating serious myocardial disease.
Synonym(s): pulsus alternans

pulsus alternans

Cardiology A pulse occurring at regular intervals which there is rhythmic attenuation of the pulse pressure heights–eg, every other beat; sustained PA is associated with severely depressed left
ventricular function, accompanied by an altered blood flow in the aorta, left ventricular and systolic pressures, and often a 3rd ventricular sound Prognosis Poor

al·ter·nat·ing pulse

(awl'tĕr-nāt-ing pŭls)
Mechanical alternation, a pulse regular in time but with alternate beats stronger and weaker, often detectable only with the sphygmomanometer and usually indicating serious myocardial disease.
Synonym(s): pulsus alternans.

pulsus alternans

Alternating strong and weak pulse beats. Pulsus alternans is a sign of failure of the left side of the heart (left ventricular failure).

pul·sus al·ter·nans

(pŭlsŭs awltĕr-nanz)
Heartbeats that alternate between strong and weak.
Synonym(s): alternating pulse.
References in periodicals archive ?
Detailed physical examination with special reference to cardiovascular system like tachycardia, pulsus alternans, raised jugular venous pressure, gallop rhythm, basal crepitations, tender hepatomegaly were noted.
The most common signs and symptoms of my study were exertional dyspnoea, effort intolerance and basal crepitations, however none of the patients had night cough, gallop rhythm or pulsus alternans.
Pulsus alternans, alternating weak and strong beat in the presence of stable heart rate and QRS complex, is generally accepted as a finding of physical examination.
The pulsus alternans was first described as beat-to-beat alternation in the arterial pressure pulse (3).
Whereas, Sengupta et al (7) had shown that pulsus alternans is reflected by alternans in both systolic and diastolic annular peak velocities.
In conclusion, we present a case with left ventricular pulsus alternans without any apparent alternans in contractile force.
Pulsus alternans. Cardiovasc Res 1993; 27: 1407-12.
Left ventricular pulsus alternans in patients with hypertrophic cardiomyopathy and severe obstruction to left ventricular outflow.
The dynamics of pulsus alternans: alternating end-diastolic fiber length as a causative factor.
Pulsus paradoxicus, pulsus alternans in congestive heart failure (CHF), and cardiac movement in tamponade reflect bifurcations in the system as minor changes cause the system to cross a "tipping point" and produce sudden drastic effects.