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- W2014302287 abstract "We studied the alterations produced in left ventricular systolic and diastolic function after applying a protocol of cryopreservation at subzero temperatures. Isolated rabbit hearts were used for the study with 5% polyethylene glycol (PM 4000) being the cryoprotective agent.The cryoprotectant solution CP-16 was used on the explanted heart in three phases: induction, storage and thawing. After 60 minutes at -1.6 C and thawing at 2.7 C/min, the heart was connected to a Langendorff system and perfused anterogradely with Krebs-Henseleit buffer. We analyzed the systolic and diastolic parameters before and after cryopreservation, thereby establishing a comparative statistical study.Following cryopreservation we found a statistically significant increase (p < 0.05) in the peak and developed pressure of the left ventricle with an upward, left displacement of the ventricular function curve. This is indicative of improvement in systolic function. However, the diastolic function showed worsening, with a statistically significant increase (p < 0.05) in mean stiffness, decrease in differential stiffness (p < 0.05) and upward, left displacement of the diastolic pressure-volume curve.On the basis of our results we concluded that: a) PM 4000 polyethylene glycol maintains the heart biological viability during cryopreservation at subzero temperatures, and b) after an cryopreservation left ventricular diastolic function worsens with an increase in systolic function." @default.
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- W2014302287 date "2000-01-01" @default.
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- W2014302287 title "Criopreservación cardíaca a temperatura subcero: estudio de la función sistólica y diastólica" @default.
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- W2014302287 doi "https://doi.org/10.1016/s0300-8932(00)75224-9" @default.
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