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Change of Diaphragmatic Level and Movement Following Division of Phrenic Nerve  

최종범 (원광대학교 의과대학 흉부외과학교실)
김상수 (원광대학교 의과대학 정형외과학교실)
양현웅 (원광대학교 의과대학 흉부외과학교실)
이삼윤 (원광대학교 의과대학 흉부외과학교실)
최순호 (원광대학교 의과대학 흉부외과학교실)
Publication Information
Journal of Chest Surgery / v.35, no.10, 2002 , pp. 730-735 More about this Journal
Abstract
Diaphragm is innervated by phrenic nerve and lower intercostal nerves. For patients with avulsion injury of brachial plexus, an in situ graft of phrenic nerve is frequently used to neurotize a branch of the brachial plexus. We studied short-term and mid-term changes of diaphragmatic level and movement in patients with dissection of phrenic nerve for neurotization. Material and Method : Thirteen patients with division of either-side phrenic nerve for neurotization of musculocutaneous nerve were included in this study. With endoscopic surgical procedure, the intrathoracic phrenic nerve was entirely dissected and divided just above the diaphragm. The dissected phrenic nerve was taken out through thoracic inlet and neck wound and then anastomosed to the musculocutaneous nerve through a subcutaneous tunnel. With chest films and fluoroscopy, levels and movements of diaphragm were measured before and after operation. Result : There was no specific technical difficulty or even minor postoperative complications following endoscopic division of phrenic nerve. After division of phrenic nerve, diaphragm was soon elevated about 1.7 intercostal spaces compared with the preoperative level, but it did not show paradoxical motion in fluoroscopy. More than 1.5 months later, diaphragm returned downward close to the preoperative level (average level difference was 0.9 intercostal spaces; p=NS). Movement of diaphragm was not significantly decreased compared with the preoperative one. Conclusion : After division of phrenic nerve, the affected diaphragm did not show a significant decrease in movement, and the elevated diaphragm returned downward with time. However, the decreased lung volumes in the last spirometry suggest the decreased inspiratory force following partial paralysis of diaphragm.
Keywords
Diaphragm; Phrenic nerve; Diaphragmatic; physiopathology; Diaphragmatic eventration; Endoscopic surgical procedure;
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