ArticleIn vivo (Athens, Greece)
Modified Subtraction Technique for the Middle Hepatic Vein Tributary and Glissonean Pedicle in Right Lobe Graft Procurement.
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Abstract
BACKGROUND/
aimThe procurement of right lobe grafts while preserving the middle hepatic vein (MHV) tributaries (V5 and V8) just before graft retrieval is technically challenging. Moreover, the safe isolation of the hepatic duct from the Glissonean pedicle is essential in living donor hepatectomy. To date, few studies have reported surgical techniques for preserving the MHV tributaries during right lobe graft procurement. PATIENTS AND
methodsThis report presents our modified subtraction technique for managing the MHV tributaries and Glissonean pedicle during right lobe graft procurement. First, a subtraction technique for the MHV tributaries was initiated by isolating the right Glissonean pedicle. The lower tip of the tape was placed behind the caudate lobe and passed behind the right hepatic vein. Each end of the tape was then passed behind V5 and V8, followed by dissection of the remaining liver parenchyma between them. Subsequently, a subtraction technique for the Glissonean pedicle was applied to safely isolate the right hepatic duct and hilar plate.
resultsBetween September 2011 and May 2025, seven donors underwent right lobe graft procurement using the subtraction technique for the middle hepatic vein tributaries. The mean operative time was 381 min with an estimated blood loss of 217 ml. Using the subtraction technique, all middle hepatic vein tributaries were preserved just before graft retrieval.
conclusionThis study presents subtraction techniques used during living donor hepatectomy. The technique may facilitate liver parenchyma dissection while preserving MHV tributaries just before graft retrieval and isolating the Glissonean pedicle.
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