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2005, Number S3

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Arch Cardiol Mex 2005; 75 (S3)

Modification of a hydraulic device for controlled banding of the trunk of the pulmonary artery in dogs

Santos MLE, Gotés J, Flores P, Tena C, Graullera V, Pulido T, Bautista E, Infante O, Martínez GML, Castañón A, Ramírez S, Soule M, Sandoval ZJ

Language: Spanish
References: 33
Page: 10-20
PDF size: 173.89 Kb.


ABSTRACT

Different congenital or acquired diseases increase the right ventricular systolic pressure. The elevation is achieved by pulmonary artery banding with linen tape or hydraulic devices. We introduce a new hydraulic device to be used in experimental subjects of less than 15 kilograms. Methods: An experimental laboratory phase was conducted. In this phase, the hydraulic devices were tested against pressures as high as 80 mm Hg; later on the hydraulic devices were placed on the dogs´ main pulmonary artery; the right ventricular systolic pressure, pulmonary artery pressure, and their differences were obtained. The values are expressed in average ± standard deviation. Results: The average weight of the dogs was 12.6 ± 2.2 kg. The average diameter found in the main pulmonary artery was 12.4 ± 1.4 mm and 27.5 ± 1.6 mm length. Right ventricular systolic pressure of basal condition to maximum pressure obtained was 25.5 ± 1.9 mm Hg vs 50.3 ± 6.9 mm Hg, p ‹ 0.0001; pulmonary artery pressures under the same conditions were 24.7 ± 2 mm Hg vs 21.5 ± 6.9 mm Hg, p ‹ 0.043; and the differences between them were 0.8 ± 1.4 mm Hg vs 28.8 ± 4.2 mm Hg, p ‹ 0.0001, developed by the hydraulic device respectively. Conclusions: The hydraulic device allows attaining a controlled acute increase in right ventricular systolic pressure.


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