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Effect of Graft Weight to Recipient Body Weight Ratio on Hemodynamic and Metabolic Parameters in Pediatric Liver Transplant: A Retrospective Analysis

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Date
2017
Author
Haberal, Mehmet
Ersoy, Zeynep
Kaplan, Serife
Ozdemirkan, Aycan
Torgay, Adnan
Arslan, Gulnaz
Pirat, Arash
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Abstract
Objectives: To analyze how graft-weight-to-body-weight ratio in pediatric liver transplant affects intraoperative and early postoperative hemodynamic and metabolic parameters. Materials and Methods: We reviewed data from 130 children who underwent liver transplant between 2005 and 2015. Recipients were divided into 2 groups: those with a graft weight to body weight ratio > 4% (large for size) and those with a ratio <= 4% (normal for size). Data included demographics, preoperative laboratory findings, intraoperative metabolic and hemodynamic parameters, and intensive care follow-up parameters. Results: Patients in the large-graft-for-size group (>4%) received more colloid solution (57.7 +/- 20.1 mL/kg vs 45.1 +/- 21.9 mL/kg; P = .08) and higher doses of furosemide (0.7 +/- 0.6 mg/kg vs 0.4 +/- 0.7 mg/kg; P = .018). They had lower mean pH (7.1 +/- 0.1 vs 7.2 +/- 0.1; P = .004) and PO2 (115.4 +/- 44.6 mm Hg vs 147.6 +/- 49.3 mm Hg; P = .004) values, higher blood glucose values (352.8 +/- 96.9 mg/dL vs 262.8 +/- 88.2 mg/dL; P < .001), and lower mean body temperature (34.8 +/- 0.7 degrees C vs 35.2 +/- 0.6 degrees C; P = .016) during the neohepatic phase. They received more blood transfusions during both the anhepatic (30.3 +/- 24.3 mL/kg vs 18.8 +/- 21.8 mL/kg; P = .013) and neohepatic (17.7 +/- 20.4 mL/kg vs 10.3 +/- 15.5 mL/kg; P = .031) phases and more fresh frozen plasma (13.6 +/- 17.6 mL/kg vs 6.2 +/- 10.2 mL/kg; P = .012) during the neohepatic phase. They also were more likely to be hypotensive (P < .05) and to receive norepinephrine infusion more often (44% vs 22%; P < .05) intra-operatively. More patients in this group were mechanically ventilated in the intensive care unit (56% vs 31%; P = .035). There were no significant differences between the groups in postoperative acute renal dysfunction, graft rejection or loss, infections, length of intensive care stay, and mortality (P > .05). Conclusions: High graft weight-to-body-weight ratio is associated with adverse metabolic and hemodynamic changes during the intraoperative and early postoperative periods. These results emphasize the importance of using an appropriately sized graft in liver transplant.
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http://ectrx.org/forms/ectrxcontentshow.php?doi_id=10.6002/ect.mesot2016.O32&year=2017&volume=15&issue=1&supplement=1&makale_no=0&spage_number=53&content_type=PDF
http://hdl.handle.net/11727/3510
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