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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Potassium cardioplegia: early assessment by radionuclide ventriculography.

Left ventricular function was evaluated by single pass Tc-99m radionuclide ventriculography when potassium cardioplegia was combined with hypothermia. In 35 patients undergoing myocardial revascularization (3 CABG/patient) in which potassium cardioplegia at 4 degrees C was used, no patient developed a myocardial infarction either by electrocardiogram or Tc-99m pyrophosphate imaging in the postoperative period. In 22 patients, aortic cross-clamp time was greater than 60 min, and the ejection fraction by the single pass radionuclide technique was 50% preoperatively and 53% postoperatively (NS). Wall motion in the single RAO view was not worse postoperatively. No patient required any inotropic agents in the immediate postoperative period. It appears that no significant ventricular impairment occurred in the immediate postoperative period (48 to 72 hours) when potassium cardioplegia combined with hypothermia was used for a 60-minute period.[1]


  1. Potassium cardioplegia: early assessment by radionuclide ventriculography. Ellis, R.J., Born, M., Feit, T., Ebert, P.A. Circulation (1978) [Pubmed]
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