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Diaphragmatic Defects (diaphragmatic + defect)

Distribution by Scientific Domains

Medical Sciences	100%

Selected Abstracts

Repair of a large congenital diaphragmatic defect with a reverse latissimus dorsi muscle flap

MICROSURGERY, Issue 2 2008
Rui F. Barbosa M.D.
Advances in neonatal care have led to an increase in the survival rate of children with large congenital diaphragmatic defects. Reconstruction by direct closure is not usually possible and surgical correction in the newborn consists of synthetic patch closure. Recurrence and complications are high with this technique and a latter reconstruction with living tissue is now advocated. We report a case of congenital diaphragmatic hernia treated initially by synthetic patch closure and 10 months latter, after a recurrence, with a reinnervated reverse latissimus dorsi (RLD) flap. We used an end-to-side neural coaptation of the thoracodorsal nerve to the phrenic nerve. The result was satisfactory, with remission of symptoms and improvement in growth and development, with permanent pleuro-peritoneal separation, normal lung growth, and apparent neodiaphragmatic function. © 2008 Wiley-Liss, Inc. Microsurgery, 2008. [source]

The effect of fetal tracheal occlusion on lung tissue mechanics and tissue composition,

PEDIATRIC PULMONOLOGY, Issue 2 2009
Jacques C. Jani MD
Abstract Fetal tracheal occlusion (TO) is currently used to treat severe cases of congenital diaphragmatic hernia (DH). Clinical and experimental studies suggest an improved postnatal outcome, but lung tissue mechanics after TO have not been studied. We determined the effect of TO on mechanical impedance and lung tissue components in a rabbit model for DH. At 23 days of gestation (term,=,31 days) either a sham thoracotomy or a diaphragmatic defect was induced. DH fetuses were randomly assigned to undergo 5 days later TO. Fetuses were delivered by term cesarean section to determine lung to body weight ratio (LBWR), dynamic lung mechanics and lung impedance. Airway resistance (Raw), elastance (HL), tissue damping (GL) and hysteresivity (GL/HL) were calculated from impedance data. Collagen I and III and elastin were quantified histologically. LBWR was significantly increased by TO compared to DH (P,<,0.001) and resistance and compliance of the respiratory system (Rrs, Crs) were improved as well. TO resulted in a significant decrease of Raw comparable to observations in sham-fetuses, without effect on lung tissue mechanics HL, GL and hysteresivity. This coincides with a significant decrease of collagen I, III and elastin in comparison to DH fetuses. In this first report on lung tissue mechanics in a rabbit model of DH, TO had a substantial effect on tissue morphology yet this was not mirrored in lung mechanics. We conclude that the effect of TO on lung mechanics without in utero reversal of occlusion, is dominated by airway remodeling. Pediatr Pulmonol. 2009; 44:112,121. © 2009 Wiley-Liss, Inc. [source]

Autologous diaphragm reconstruction with the pedicled latissimus dorsi flap

JOURNAL OF SURGICAL ONCOLOGY, Issue 3 2006
M.O. McConkey BSc
Abstract The latissimus dorsi (LD) muscle has been previously described to repair diaphragmatic defects, but as a "reverse" flap, relying on secondary blood supply from the perforating lumbar vessels rather than primary inflow from the dominant thoracodorsal artery. We report resection of a retroperitoneal synovial sarcoma, with reconstruction of the hemidiaphragm using the LD rotated on its primary neurovascular bundle. By using the dominant pedicle, the vascularity of the flap is improved, minimizing the chance of flap tip loss. Maintaining an intact nerve supply prevents atrophy. As the distal origin of the LD is broad and flat, it is ideally suited for diaphragm repair. A latissimus-sparing thoracotomy incision is required to enable this method of diaphragm reconstruction. J. Surg. Oncol. 2006;94:248,251. © 2006 Wiley-Liss, Inc. [source]

Hepatic hydrothorax , pathophysiology, diagnosis and treatment , review of the literature

LIVER INTERNATIONAL, Issue 4 2004
Chamutal Gur
Abstract: Hepatic hydrothorax is defined as the accumulation of significant pleural effusion in a cirrhotic patient without primary pulmonary or cardiac disease. Hydrothorax is uncommon occurring in up to 4,6% of all patients with cirrhosis and up to 10% in patients with decompensated cirrhosis. Although ascites is usually present, hydrothorax can occur in the absence of ascites. Patients with hepatic hydrothorax usually have advanced liver disease with portal hypertension and most of them will require liver transplantation. Over the last few years, new insights into the pathogenesis of this entity have lead to improved treatment modalities such as portosystemic shunts (TIPS) and video-assisted thoracoscopy for closure of diaphragmatic defects. These modalities may be of help as a bridge to transplantation. The aim of this review is to describe recent developments in the pathogenesis, diagnosis and treatment of hepatic hydrothorax. [source]