(n.) A weakening or cessation of the contractile power of the heart.
Example Sentences:
(1) Electromechanic dissociation, sinus bradycardia, nodal rhythm followed by idioventricular rhythm and asystole, were observed following myocardial rupture.
(2) If VF persisted or if countershock resulted in asystole or a nonperfusing rhythm (electrical-mechanical dissociation [EMD]), the alternate drug (naloxone or epinephrine) was then given.
(3) High voltage stimuli were always effective, while when the pulse amplitude was reduced to 3.8 volt stimuli were uneffective except when occurring after extremely long asystolic pauses.
(4) Dogs remained asystolic without ventilation for 1.0 (n = 4), 1.5 (n = 3), or 2.0 (n = 3) h. Resuscitation was accomplished with closed-chest compression, mechanical ventilation, i.v.
(5) In coronary care unit, in addition to try to decrease the total mortality rate, also should try to reduce the incidence of Primary ventricular fibrillation and asystole.
(6) Asystole was the most common rhythm (48%), followed by ventricular fibrillation or tachycardia (31%).
(7) Presenting electrocardiograms (ECG) showed ventricular fibrillation (VF) in 54.2%, asystole in 29.8% and electromechanical dissociation (EMD) in 9.2% of the patients.
(8) Fourteen patients being treated with amiodarone had slower resting and postdefibrillation heart rates, but the mean duration of posdefibrillation asystole was similar to that seen in patients not receiving any antiarrhythmic medication.
(9) Functional rejection with asystole was observed in all allografts from 8 to 40 minutes posttransplantation.
(10) Bradyarrhythmia or asystole is the most common rhythm disturbance with ventricular fibrillation and tachycardia, for 30-40% of patients admitted in intensive coronary care units.
(11) A 27-year-old woman at 15 weeks gestation had a complete neurologic recovery after 22 minutes of CPR, including 19 minutes of electromechanical dissociation and asystole, with normal fetal heart function and fetal motion confirmed by ultrasound immediately after resuscitation.
(12) Failure to recognize that electrical interference from noncaptured permanent pacemaker beats precluded the usual demand mode of application of the transcutaneous pacemaker led to asystole.
(13) Frequent complications were sudden complete heart block (5 patients) and ventricular asystole (4 patients) without previous lengthening of the atrioventricular conduction time.
(14) Two different algorithms were used one for ventricular fibrillation (VF) and pulseless ventricular tachycardia and one for asystole and pulseless bradycardia.
(15) The device, which can be programmed for a simple or a double impulse emission, is equipped with a demand stimulator working if post-tachycardia asystole is present.
(16) The present case demonstrates the fact that premature atrial contractions may produce prolonged asystolic attacks in patients with advanced intraventricular conduction disturbances.
(17) On admission she was bradycardiac with severe hypotension and third-degree heart block which progressed to asystole.
(18) Death due to ventricular fibrillation or asystole occurs between 28 degrees-25 degrees C. Cold stress causes an osmolal diuresis with sodium and chloride as the main constituents.
(19) Sixteen patients (age 13-53 years) with accidental deep hypothermia have been rewarmed in our clinic during the last 10 years, 14 by femoro-femoral cardiopulmonary bypass (CPB) of whom 11 had a cardiopulmonary arrest (asystole in 5 and ventricular fibrillation in 6).
(20) We conclude that calcium chloride is not of value in resuscitating patients from refractory asystole in the prehospital cardiac arrest setting.
Contract
Definition:
(n.) To draw together or nearer; to reduce to a less compass; to shorten, narrow, or lessen; as, to contract one's sphere of action.
(n.) To draw together so as to wrinkle; to knit.
(n.) To bring on; to incur; to acquire; as, to contract a habit; to contract a debt; to contract a disease.
(n.) To enter into, with mutual obligations; to make a bargain or covenant for.
(n.) To betroth; to affiance.
(n.) To shorten by omitting a letter or letters or by reducing two or more vowels or syllables to one.
(v. i.) To be drawn together so as to be diminished in size or extent; to shrink; to be reduced in compass or in duration; as, iron contracts in cooling; a rope contracts when wet.
(v. i.) To make an agreement; to covenant; to agree; to bargain; as, to contract for carrying the mail.
(a.) Contracted; as, a contract verb.
(a.) Contracted; affianced; betrothed.
(n.) The agreement of two or more persons, upon a sufficient consideration or cause, to do, or to abstain from doing, some act; an agreement in which a party undertakes to do, or not to do, a particular thing; a formal bargain; a compact; an interchange of legal rights.
(n.) A formal writing which contains the agreement of parties, with the terms and conditions, and which serves as a proof of the obligation.
(n.) The act of formally betrothing a man and woman.
Example Sentences:
(1) During the performance of propulsive waves of the oesophagus the implanted vagus nerve caused clonic to tetanic contractions of the sternohyoid muscle, thus proving the oesophagomotor genesis of the reinnervating nerve fibres.
(2) But RWE admitted it had often only been able to retain customers with expired contracts by offering them new deals with more favourable conditions.
(3) Thus adrenaline, via pre- and post-junctional adrenoceptors, may contribute to enhanced vascular smooth muscle contraction, which most likely is sensitized by the elevated intracellular calcium concentration.
(4) Further, the maximal increase in force of contraction was measured using papillary muscle strips from some of these patients.
(5) When subjects centered themselves actively, or additionally, contracted trunk flexor or extensor muscles to predetermined levels of activity, no increase in trunk positioning accuracy was found.
(6) Twitch-tetanus ratios were calculated and found not to be related to unit contraction time.6.
(7) Selective removal of endothelium had no effect on BK-induced contraction or the action of the antagonists.
(8) The increased muscular strength in due to a rise of calcaemia, improved muscle contraction and probably also due to the mentioned nutritional factors.
(9) However, there was not a relationship between the contraction curve of the gallbladder and the bile flow into the duodenum.
(10) In in vitro preparations GABA (10(-7) - 10(-3) M) elicited a dose-dependent relaxation; a decrease in the spontaneous contractions was sometimes observed.
(11) There was no correlation between disturbed gastric clearance, impaired gall bladder contraction, and prolonged colonic transit time in the patients with cardiovascular autonomic neuropathy nor was there a correlation between any disturbed motor function and age or duration of diabetes.
(12) Noradrenaline decreased the phasic contraction amplitude of the circular muscle and exerted a stimulant effect on the tone which suggested an existence of two alpha 1-adrenoceptor subtypes.
(13) It may, however, be useful to compare local wall dynamics in the more isometrically-contracting basal segment with those in the middle portion which brings about most of the emptying of the ventricle.
(14) Upon depletion of ATP in contraction, the P2 intensity reverted to the original rigor level, accompanied by development of rigor tension.
(15) L-NAME abolished B contractions in a dose-dependent fashion.
(16) The power spectrum of the EMG was analyzed during isometric contractions of the shoulder muscles.
(17) A23187 had only a transient effect on KCl-contracted coronary arteries.
(18) When caffeine evokes a contraction, and only then, crayfish muscle fibers become refractory to a second challenge with caffeine for up to 20 min in the standard saline (5 mM K(o)).
(19) Dopamine at concentrations over 10(-5)M induced contractions of tracheal muscle strips and repeated exposures resulted in desensitization (tachyphylaxis) of the muscle.
(20) In the present study we examined cholecystokinin release and gallbladder contraction after oral administration of a commercial fatty meal (Sorbitract; Dagra, Diemen, The Netherlands) using ultrasonography in eight normal subjects and eight gallstone patients before and after 1 and 4 weeks of treatment with ursodeoxycholic acid (10 mg kg-1.day-1).