| Fallot's tetrad | A congenital heart anomaly which consists of pulmonary stenosis, ventricular septal defect, dextroposition of the aorta (aorta is on the right side instead of the left) and hypertrophy of the right ventricle. This condition results in a blue baby at birth due to inadequate oxygenation. Surgical correction is emergent. (27 Sep 1997) |
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| half-tetrad analysis | <genetics> The analysis of tetrad chromosomes (a pair of homologous chromosomes, thus four total chromosomes) after recombination when only half of the tetrad (two of the four chromosomes) can be analysed. (13 Nov 1997) |
| narcoleptic tetrad | The clinical syndrome of narcolepsy, cataplexy, sleep paralysis, and hypnagogic hallucinations. (05 Mar 2000) |
| tetrad | A group of four, four pollen grains remaining fused together at maturity. (09 Oct 1997) |
| pentalogy of Fallot | Fallot's tetralogy with, in addition, a patent foramen ovale or atrial septal defect. (05 Mar 2000) |
| tetralogy of fallot | A congenital heart anomaly which consists of pulmonary stenosis, ventricular septal defect, dextroposition of the aorta (aorta is on the right side instead of the left) and hypertrophy of the right ventricle. This condition results in a blue baby at birth due to inadequate oxygenation. Surgical correction is emergent. (27 Sep 1997) |
| trilogy of fallot | Combination of pulmonary valve stenosis and atrial septal defect with right ventricular hypertrophy. (12 Dec 1998) |
| Fallot, Etienne-Louis | <person> French physician, 1850-1911. See: pentalogy of Fallot, Fallot's tetrad, Fallot's triad, trilogy of Fallot. (05 Mar 2000) |
| Fallot's triad | Combination of pulmonary valve stenosis and atrial septal defect with right ventricular hypertrophy. (12 Dec 1998) |