venous return
111Valsalvamaneuver — Val·sal·va maneuver (văl sălʹvə) n. 1. Expiratory effort when the mouth is closed and the nostrils are pinched shut, which forces air into the eustachian tubes and increases pressure on the inside of the eardrum. 2. Expiratory effort against a… …
112Valsalva maneuver — /val sal veuh/ a forced expiratory effort against a closed glottis that decreases intrathoracic pressure, hampering venous return to the heart, and that can be used to inflate the Eustachian tubes and adjust pressure in the middle ear. [named… …
113curve — 1. A nonangular continuous bend or line. 2. A chart or graphic representation, by means of a continuous line connecting individual observations, of the course of a physiologic activity, of the number of cases of a disease in a given period, or of …
114preload — 1. The load to which a muscle is subjected before shortening. 2. SYN: ventricular p.. ventricular p. formerly, the end diastolic pressure stretching the ventricular walls, which determines the end diastolic fiber length at the onset of …
115sequestration — 1. Formation of a sequestrum. 2. Loss of blood or of its fluid content into spaces within the body so that it is withdrawn from the circulating volume, resulting in hemodynamic impairment, hypovolemia, hypotension, and redu …
116strangulated — Constricted so as to prevent sufficient passage of air, as through the trachea, or to cut off venous return and/or arterial flow so as to compromise viability, as in the case of a hernia. [L. strangulo, pp. atus, to choke, fr. G. strangaloo, to… …
117syncope — Loss of consciousness and postural tone caused by diminished cerebral blood flow. [G. synkope, a cutting short, a swoon] Adams Stokes s. s. due to complete AV block. SYN: Morgagni Adams Stokes s.. cardiac s. fainting with unconsciousness of any …
118HAPVR — hemi anomalous pulmonary venous return …
119PASVR — pulmonary anomalous superior venous return …
120RVR — reduced vascular response; renal vascular resistance; repetitive ventricular response; resistance to venous return …
