Abstract
Abstract Background Inadequate myocardial protection in long ischemic periods followed by reperfusion is an issue of concern in cardiac surgery. Cardioplegic solutions improve the tolerance to ischemia and reperfusion by preserving myocardial energy reserves, preventing osmotic and electrolyte imbalances and buffering acidosis. The aim of the study was to compare early outcomes of Histidine–tryptophan–ketoglutarate (HTK) solution versus blood cardioplegia in coronary artery bypass graft surgery at Ain Shams University Hospitals. Methodology This was a retrospective study conducted on patients who underwent isolated elective CABG at the department of cardiothoracic surgery at Ain Shams University Hospitals from the 1stof January, 2017 to the 1st of August, 2018. Results the analysis between these two groups divided as the following: first group who received Histidine–tryptophan–ketoglutarate (HTK) and the second who received conventional blood cardioplegia , There was no statistically significant difference between the two groups of myocardial protection in terms of morbidity and mortality with a p-value >0.05. With a stastically significant increase in Total bypass time with a p value <0.05 and a highly significant difference in terms of post operative Ventilation time and ICU stay which was higher in HTK group with a p-value of < 0.01 between the two groups. Conclusion Conventional blood cardioplegia showed superiority in terms of metabolic recovery based on the incidence of spontaneous defibrillation, ventilation time and ICU stay on the other hand Histidine–tryptophan–ketoglutarate (HTK) cardioplegia is a much more easily administered cardiolplegia technique without the need of preparation or repeated administration. Both Solutions showed efficacy in different areas that could be owed to the small sample size we used which cannot asses the ultimum superiority of one solution over the other .
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