(n.) The sum of four units; four units or objects.
(n.) A symbol representing four units, as 4 or iv.
(n.) Four things of the same kind, esp. four horses; as, a chariot and four.
Example Sentences:
(1) These included bringing in the A* grade, reducing the number of modules from six to four, and a greater attempt to assess the whole course at the end.
(2) Low birth weight, short stature, and mental retardation were common features in the four known patients with r(8).
(3) It was shown in experiments on four dogs by the conditioned method that the period of recovery of conditioned activity after one hour ether anaesthesia tested 7 to 7.5 days.
(4) However, four of ten young adult outer arm (relatively sun-exposed) and one of ten young adult inner arm (relatively sun-protected) fibroblasts lines increased their saturation density in response to retinoic acid.
(5) A 61-year-old man experienced four bouts of pancreatitis in 1 year.
(6) The promoters of the adenovirus 2 major late gene, the mouse beta-globin gene, the mouse immunoglobulin VH gene and the LTR of the human T-lymphotropic retrovirus type I were tested for their transcription activities in cell-free extracts of four cell lines; HeLa, CESS (Epstein-Barr virus-transformed human B cell line), MT-1 (HTLV-I-infected human T cell line without viral protein synthesis), and MT-2 (HTLV-I-infected human T cell line producing viral proteins).
(7) In each study, all subjects underwent four replications (over two days) of one of the six permutations of the three experimental conditions; each condition lasted 5 min.
(8) Four cytotoxic antibiotics, bikaverin, duclauxine, PSX-1 and vermiculine, were examined with respect to their interference with glycolysis and respiration and their possible ionophoric or cytolytic activity.
(9) The invaginations were classified into four easily recognized types: regular, chunky, filigree, and ridge (present only in axon hillock regions).
(10) During the study period four family outbreaks and seven recurrences of infection were observed.
(11) These four antigens consisted of S of MNSs blood group, Lua of Lutheran blood group, and K and Kpa of Kell-Cellano blood group.
(12) Binding data for both ligands to the enzyme yielded nonlinear Scatchard plots that analyze in terms of four negatively cooperative binding sites per enzyme tetramer.
(13) Even so, amputation of fifteen extremities and four other major excisions were required in twelve patients.
(14) Four of the 39 ticks in our colony were infected with a spirochete; presumably, Borrelia crocidurae.
(15) Four other independent LCMV-GP2(275-289) specific H-2Db-restricted CTL clones also expressed V alpha 4 and V beta 10 gene elements.
(16) The hospital whose A&E unit has been threatened with closure on safety grounds has admitted that four patients died after errors by staff in the emergency department and other areas.
(17) Maximal covalent binding of [4,5-14C]ronidazole to DNA also required four-electron reduction, consistent with previous studies of the covalent binding of this agent to immobilized sulfhydryl groups [Kedderis et al.
(18) We investigated whether these peptides also affect the sleep EEG in humans when given intravenously by comparing polysomnographically the effects of four boluses of (1) placebo, (2) 50 micrograms GHRH or (3) 50 micrograms SRIF administered at 22.00, 23.00, 24.00 and 1.00 h to 7 male controls.
(19) Since the start of this week, markets have been more cautious, with bond yields in Spain reaching their highest levels in four months on Tuesday amid concern about the scale of the austerity measures being imposed by the government and fears that the country might need a bailout.
(20) In 14 of the patients the imaging results were checked against the histological findings of a subsequent thymectomy, which revealed four thymomas and (with the exception of one normal thymus) hyperplastic changes in all the others.
Tetralogy
Definition:
(n.) A group or series of four dramatic pieces, three tragedies and one satyric, or comic, piece (or sometimes four tragedies), represented consequently on the Attic stage at the Dionysiac festival.
Example Sentences:
(1) Thus, there is still a need for improvement, particularly future research devoted to better understanding of the electrophysiological mechanisms responsible for arrhythmias, electrosurgical and medical arrhythmia therapy, and right and left ventricular mechanics after repair of tetralogy of Fallot.
(2) Ninety-six consecutive total repairs of the tetralogy of Fallot are reviewed.
(3) diastasis recti abdominis with pericardial hernia, ventral defect of the diaphragm, partial defect of the sternum, and tetralogy of Fallot.
(4) The following cardiovascular lesions were operated: large aortopulmonary septal defects, localized just above the valvular rings in 2 patients with severe pulmonary hypertension, with very good effect in both; tetralogy of Fallot - in 2 babies, in one with good effect; congenital mitral obstruction with pulmonary hypertension in one case, with good effect; total anomalous pulmonary venous return of supracardiac type in one child, decreased 1 week following operation; type 1 complete transposition of great arteries in one baby, deceased one day following operation; large ventricular septal defects, with systemic or nearly systemic pulmonary hypertension in 5 children, in one with long-term good effect.
(5) The aim of the study was to evaluate the main predictors of the inducibility of sustained ventricular tachycardia (VT) in patients with repaired tetralogy of Fallot.
(6) A review was undertaken of 488 patients followed up for more than 1 month after repair of tetralogy of Fallot (mean follow-up time 6.1 years); 13.5% had ventricular arrhythmia on routine electrocardiogram.
(7) The patient was a 27-year-old female who had undergone corrective surgery for tetralogy of Fallot at the age of 8, and developed VT of distinctly different QRS configurations.
(8) The work is based on the analysis of complications of Waterston-Cooley-Edwards anastomosis which create tactical and technical difficulties in correction of Fallot's tetralogy.
(9) Three patients aged 4, 11, and 24 years with congenital heart disease had St. Jude Medical valves in pulmonary positions (two cases) for tetralogy of Fallot and in the tricuspid position (one case).
(10) Early and late results in 309 patients undergoing repair of tetralogy of Fallot between 1960 and 1982 were analyzed with respect to independent determinants of operative mortality, late reoperation, and late death.
(11) As a result, the most frequently observed abnormality (50%) was a complex of anomalies similar to tetralogy of Fallot in man.
(12) Fallot's tetralogy is associated with increased maternal age and parity.
(13) The necessity of recatheterization after correction of tetralogy of Fallot is discussed.
(14) A 3-year-old boy underwent corrective surgery for tetralogy of Fallot.
(15) Surgical repair was performed on 8 patients with tetralogy of Fallot and congenital or acquired absence of the left pulmonary artery.
(16) To preserve right ventricular function after intracardiac repair of tetralogy of Fallot, we developed a standardized patch infundibuloplasty with minimum ventriculotomy and myocardial resection.
(17) We analyzed 131 hearts with tetralogy of Fallot for their prominent surgical anatomical features.
(18) The treatment of a rarely described variant of tetralogy of Fallot with pulmonary atresia is reported.
(19) Cardiac catheterization revealed an extreme tetralogy of Fallot complicated by a patent ductus arteriosus.
(20) The infection was associated with Fallot's tetralogy in 10 patients (17%), ventricular septal defect in 7 (4%), bicuspid aortic valve in 7 (16%), coarctation of the aorta in 6 (8%), atrial septal defects in 2 (1%), and patent ductus arteriosus and pulmonary artery branch stenosis in 1 patient each.