dilatation


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dilatation

 [dil″ah-ta´shun]
1. the condition, as of an orifice or tubular structure, of being dilated or stretched beyond normal dimensions by medications or instrumentation.
2. the act of dilating or stretching.
dilatation of the heart compensatory enlargement of the cavities of the heart, with thinning of the walls.

di·la·tion

(dī-lā'shŭn),
1. Physiologic or artificial enlargement of a hollow structure or opening.
2. The act of stretching or enlarging an opening or the lumen of a hollow structure.
Synonym(s): dilatation
[L. dilato, pp. dilatatus, to spread out, dilate]

dilatation

(dĭl′ə-tā′shən, dī′lə-)
n.
Dilation.

dil′a·ta′tion·al adj.

dilatation

Widening. This may be a normal process or may imply stretching beyond normal dimensions, either as part of a disease process or as a deliberate surgical act.

di·la·tion

, dilatation (dī-lā'shŭn, dil'ă-tā'shŭn)
1. Physiologic or artificial enlargement of a hollow structure or opening.
2. Stretching an opening of a hollow structure.
References in periodicals archive ?
Objective: Achalasia Cardia is treated by Pneumatic balloon dilatation, Heller's Myotomy and recently, by Peroral Esophagaeal Myotomy.
Most OSs can be managed with periodic endoscopic dilatations. Gradual dilatation is essential and the procedure is largely individualised, as the optimal frequency and timing has not been established.
Let it be [Dil.sub.A] = {[delta] [member of] [Col.sub.A]|[delta]--is a dilatation of A} the dilatation set of affine plane A = (P, L, I).
Mid ascending aortic dilatation is common with older age, whereas aortic root dilatation is correlated with younger age and male sex; 60% do not have any degree of aortic dilatation.
No significant between-group difference was evident in any of cellular hyperplasia, goblet cell hypertrophy or degeneration, leukocytic infiltration, ciliary loss or degeneration, edema, or vascular dilatation.
most appropriate time for administration was at cervical dilatation of 2.5 to 3cm, and no harmful effects seen with dose of 30 mg8.
Gnanaraj et al21 assessed patients who were on self calibration comparing them to group of 49 patients on dilatation. The first group had a significantly lower re-stricture rate of 5%.
Viridans streptococcal bacteraemia after oesophageal stricture dilatation. Gastrointest Endosc 1998; 48: 568-73.
In the flame zone with negative dilatation (i.e., P > 0), the fluid element should stay in a state of stable compression; therefore, the probability of unstable A1 and stretching A4 decreases while the probability of stable and compressing A5 increases gradually.
After appropriate positioning under anesthesia, patients in group A (36 patients, experimental group) received preoperative urethral dilatation from 18 Fr to 28 Fr with an Otis urethrotome (Figure 1); patients in group B (36 patients, control group) did not received preoperative urethral dilatation.
Friedman introduced partograph in 1954; he concluded that progressive cervical dilatation is the most important factor in progress of labour and plotted cervical dilatation against time on his graph.