ArticleIndian journal of endocrinology and metabolism
Intraoperative Identification of Parathyroid Tissue Using the Ratio of Aspartate Transaminase to Lactate Dehydrogenase.
Article in Indian journal of endocrinology and metabolism. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Inadvertent devascularisation or removal of parathyroid glands (PT) during thyroidectomy necessitates their autotransplantation after Frozen section (FS). FS is time-consuming, tedious and expensive, disrupts the pathology department and is not universally available. This study aimed to determine the ratio of aspartate aminotransferase to lactate dehydrogenase (AST/LDH) of PT extracts to differentiate it from fat, thyroid, and lymph node (LN). Methods: This prospective study was conducted on all patients planned for any thyroid or parathyroid surgery. Intra-operatively, a 2.5 × 2.5 × 2.5 mm Results: The mean AST/LDH ratios of PT (0.311 ± 0.176) were significantly higher than that of thyroid, fat and LN. A cut-off of ≥0.165 for PT had a sensitivity and specificity of 83.8% and 83.1% against thyroid tissue, 83.8% and 74% against fat, and 83.8% and 100% against LN. AST/LDH ratio of PTA was found to be 0.318. Conclusion: AST/LDH ratio can be a simple, reliable, less labour-intensive method of identification of PT and can be a replacement for FS. The high specificity to differentiate an LN is clinically relevant in central compartment lymph node dissections with a higher probability of inadvertent removal or devascularisation of PT.
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