(v. t.) To strike repeatedly; to lay repeated blows upon; as, to beat one's breast; to beat iron so as to shape it; to beat grain, in order to force out the seeds; to beat eggs and sugar; to beat a drum.
(v. t.) To punish by blows; to thrash.
(v. t.) To scour or range over in hunting, accompanied with the noise made by striking bushes, etc., for the purpose of rousing game.
(v. t.) To dash against, or strike, as with water or wind.
(v. t.) To tread, as a path.
(v. t.) To overcome in a battle, contest, strife, race, game, etc.; to vanquish or conquer; to surpass.
(v. t.) To cheat; to chouse; to swindle; to defraud; -- often with out.
(v. t.) To exercise severely; to perplex; to trouble.
(v. t.) To give the signal for, by beat of drum; to sound by beat of drum; as, to beat an alarm, a charge, a parley, a retreat; to beat the general, the reveille, the tattoo. See Alarm, Charge, Parley, etc.
(v. i.) To strike repeatedly; to inflict repeated blows; to knock vigorously or loudly.
(v. i.) To move with pulsation or throbbing.
(v. i.) To come or act with violence; to dash or fall with force; to strike anything, as, rain, wind, and waves do.
(v. i.) To be in agitation or doubt.
(v. i.) To make progress against the wind, by sailing in a zigzag line or traverse.
(v. i.) To make a sound when struck; as, the drums beat.
(v. i.) To make a succession of strokes on a drum; as, the drummers beat to call soldiers to their quarters.
(v. i.) To sound with more or less rapid alternations of greater and less intensity, so as to produce a pulsating effect; -- said of instruments, tones, or vibrations, not perfectly in unison.
(n.) A stroke; a blow.
(n.) A recurring stroke; a throb; a pulsation; as, a beat of the heart; the beat of the pulse.
(n.) The rise or fall of the hand or foot, marking the divisions of time; a division of the measure so marked. In the rhythm of music the beat is the unit.
(n.) A transient grace note, struck immediately before the one it is intended to ornament.
(n.) A sudden swelling or reenforcement of a sound, recurring at regular intervals, and produced by the interference of sound waves of slightly different periods of vibrations; applied also, by analogy, to other kinds of wave motions; the pulsation or throbbing produced by the vibrating together of two tones not quite in unison. See Beat, v. i., 8.
(v. i.) A round or course which is frequently gone over; as, a watchman's beat.
(v. i.) A place of habitual or frequent resort.
(v. i.) A cheat or swindler of the lowest grade; -- often emphasized by dead; as, a dead beat.
(a.) Weary; tired; fatigued; exhausted.
Example Sentences:
(1) It is suitable either for brief sampling of AP durations when recording with microelectrodes, which may impale cells intermittently, or for continuous monitoring, as with suction electrodes on intact beating hearts in situ.
(2) Calcium added to the myocytes seen after beating ceased reversed the effect and the cells started to beat again.
(3) The behavior of the retrograde H deflection in respect to the first extra beat following the premature QRS complex helped in excluding bundle branch reentry.
(4) Amiodarone was able to suppress the premature ventricular beats, depress conduction and prolong refractoriness in both, the AV node and accessory pathway to prevent recurrences of atrioventricular reentry.
(5) This study compares the effects of 60 minutes of ischemic arrest with profound topical hypothermia (10 dogs) on myocardial (1) blood flow and distribution (microspheres), (2) metabolism (oxygen and lactate), (3) water content (wet to dry weights), (4) compliance (intraventricular balloon), and (5) performance (isovolumetric function curves) with 180 minutes of cardiopulmonary bypass with the heart in the beating empty state (seven dogs).
(6) Bamu also beat him, taking a pair of pliers and wrenching his ear.
(7) At lower frequencies of stimulation the heart beat is increased to rates dependent on interaction between the time course of the hyperpolarization and the refractory period of the heart.
(8) Tachycardia was sustained for a mean of 4.8 hours prior to medical evaluation, with a mean rate of 186 beats per minute and mean systolic blood pressure of 111 mm Hg.
(9) A linear increase in heart rate per 10-fold increase of either drug was observed, (-)-isoprenaline: 25 beats - min-1-; (plus or minus)-salbutamol: 14 beats - min-1-.
(10) In the 55th minute Ivanovic dispossessed Bale and beat Ricketts before sliding the ball across to give Tadic a simple finish.
(11) Gated blood pool images were stored in modified left anterior oblique views by the multiple gated method (28 frames per beat) after the in vivo labeling of erythrocytes using 25 mCi 99m-Tc.
(12) The BBA statistics director, David Dooks, said: "It was no surprise to see the January mortgage figures falling back from December, when transactions were being pushed through to beat the end of stamp duty relief.
(13) A patient with hypertensive heart disease, in whom atrial premature beats with a decrease in the amplitude and widening of his bundle potential, prolongation of the H-V interval, and right bundle branch block pattern suggested intrahisian longitudinal dissociation, is described.
(14) Women on the beat: how to get more female police officers around the world Read more Mortars were, for instance, used on 5 June when Afghan national army soldiers accidentally hit a wedding party on the outskirts of Ghazni, killing eight children.
(15) Complete atrio-ventricular block, and salves of ventricular premature beats were the most serious rhythm disturbances.
(16) Shell casings littered the main road, tear gas hung in the air and security forces beat local residents.
(17) When intracellular recordings were made from muscle cells of the sinus venosus, it was found that applied acetylcholine caused bradycardia and a cessation of the heart beat which was associated with membrane hyperpolarization and a reduction in the duration of the action potentials.
(18) His teams are always hard to beat, tactically disciplined and, most importantly, successful.
(19) With these stringent criteria the rejection rate was 71.0% for group A records, 58.5% for group B and 44.5% for group C. The proportions of records with peak quality (no missing leads or clipping, and grade 1 noise, lead drift or beat-to-beat drift) were 4.5% for group A, 5.5% for group B and 23.0% for group C. Suggested revisions in the grading of technical quality of ECGs are presented.
(20) Shaker Aamer , a Saudi who lived in London before travelling to Afghanistan, has given a statement to one of his lawyers in which he says British intelligence officers were present while Americans beat him and smashed his head against a wall.
Dicrotism
Definition:
(n.) A condition in which there are two beats or waves of the arterial pulse to each beat of the heart.
Example Sentences:
(1) an improvement of the REG parameters is observed: increase of the amplitude and decrease of the values of the relative part and dicrotic index.
(2) LVESP calculated by this method and systolic blood pressure measured by the cuff were compared with aortic dicrotic notch pressures obtained by a catheter-tip manometer system as true LVESP.
(3) caused an increase of the amplitude and a decrease of the anacrote, of its relative part, and the dicrotic index, changes indicating a lowering of the cerebrovascular resistance.
(4) 3) When the light-collecting fibre was placed less than 0.5 mm from the gingival surface, clear dicrotic notches were seen in RLP.
(5) We noted a significant negative correlation between the arterial level of plasma norepinephrine and the amount of modulation of the dicrotic wave after nitroglycerin among subjects 40 yr old or younger, suggesting a sympathetic neurogenic contribution to the vascular abnormalities observed in relatively young patients with essential hypertension.
(6) Initially, the balloon was inflated at the aortic dicrotic notch and deflated before the next systole; subsequently, the inflation time was moved progressively earlier in 30-ms steps.
(7) End-systolic pressure was measured at the dicrotic notch of the arterial pressure tracing and end-systolic LV dimensions at the time of aortic valve closure.
(8) The features of pulse waves of hypertensive patients were that (t) was short even in the supine position, and that dicrotic wave was small or absent especially for toe pulse.
(9) The following REG parameters were assayed: anacrotic section of the curve and its relative part, amplitude and dicrotic index.
(10) Hence the use of the radial artery dicrotic notch as an estimate of end systole is unreliable.
(11) These oscillations resembled the wave forms of arterial pulsations with steep upstroke and dicrotic notch when the pressure amplitudes were above 10 mmHg.
(12) Subsequently digital plethysmography (systolic a-wave, dicrotic b-wave and the c-incisura) was monitored for 2 h. After administration of the NTG-containing sprays (NR and NT) the median a-wave increased rapidly, the median c-incisura deepened and the median b-wave rose slightly.
(13) It was found that the presence of the dicrotic notch in the uterine artery time-velocity waveform is the result of wave reflection and that a persistent notch past 20 weeks' gestation may be indicative of an abnormally high placental bed resistance.
(14) Physicians set up presumed value for the left ventricular endodiastolic pressure, a search area for the dicrotic notch, a threshold for the onset of the up-slope and the corresponding value of the calibration signal on the digital switches of the calculator.
(15) At cardiac catheterization the configuration of the pressure tracing in the main pulmonary artery is typical, showing an abrupt rise and fall of the systolic wave followed by a low situated dicrotic notch.
(16) We apply a pulse-wave theory to a model of the human arm arterial system that predicts the changes in the arterial pressure waveform as it traverses the vasculature (increased pulse pressure, sharper main wave, disappearance of the aortic incisura, and appearance of a diastolic dicrotic wave) and also predicts the observed modulation of the waveform during phenylephrine-induced vasoconstriction and nitroglycerin-induced vasodilation.
(17) At the foot the systolic and pulse pressures were greater and the dicrotic wave more prominent.
(18) Under control conditions, the shape of the finger waveform differed from the brachial-artery waveform in terms of: (1) a more peaked appearance; (2) a dicrotic notch (Pnotch) which is located at a lower percentage of pulse pressure; and (3) a larger pulsatile-systolic area.
(19) Dicrotic notch duration was significantly reduced and dicrotic notch pressure enhanced; in 34 women both of these abnormalities were present.
(20) Type I was further classified into subgroups Ia and Ib according to the magnitude of the tidal wave, and type II was subdivided into IIa and IIb according to the magnitude of the dicrotic notch.