%0 Journal Article %T Contratura isqu¨ºmica do mioc¨¢rdio: estudo experimental em ratos %A VELUDO %A Eduardo Tiveron %A ARANHA %A Alexandre Luiz %A PACCHIONI %A Alexandre %A OLIVEIRA %A Gustavo Ribeiro de %A SADER %A Albert Amin %A VICENTE %A Yvone Avalloni de Moraes V. A. %A VICENTE %A Walter V. A. %J Revista Brasileira de Cirurgia Cardiovascular %D 1998 %I Sociedade Brasileira de Cirurgia Cardiovascular %R 10.1590/S0102-76381997000300013 %X ischemic contracture of the heart (ich) has been largely employed for the investigation of global heart ischemia physiopathology. we herein describe a simple ich experimental model. eight wistar rats, anesthetized with sulfuric ether, were studied. the heart was rapidly removed by thoracotomy, and then immersed in a 37¡ãc saline bath. a latex balloon catheter placed in the left ventricle and distended to 20 mmhg was used to detect ich onset (icho) and intensity (ichi). a 5 mmhg baseline elevation pepresented icho. ichi was represented by peak balloon pressure. ich dp/dt was calculated. the results (mean ¡À standard deviation) were similar to the literature: icho (min) = 15.5 ¡À 0.59; ichi (mmhg) = 62.0 ¡À 5.81; dp/dt (mmhg/min) = 14.2 ¡À 3.05. %K myocardial contraction [rats] %K myocardial ischemia [rats]. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0102-76381997000300013&lng=en&nrm=iso&tlng=en