Secondary abdominal compartment syndrome in patients with toxic epidermal necrolysis.

INTRODUCTION: Secondary abdominal compartment syndrome (ACS) is a severe complication in patients admitted to burn intensive care units (BICUs). Unlike patients with thermal burns, patients with toxic epidermal necrolysis (TEN) present with a different pathophysiology and usually require less fluid. PATIENTS AND METHODS: We reviewed our registry of adult patients presenting with TEN in our 8-bed BICU over the course of 11 years and identified and analyzed patients treated for ACS and decompressive laparotomy (DL). RESULTS: From a total of 29 patients with bioptic confirmed TEN, 5 underwent DL due to ACS with a mean age of 57 years, mean percentage of total body surface area (TBSA) affected of 54±25%, complete epidermolysis of 28±24% TBSA, a mean severity of illness score (SCORTEN) of 3.8±0.8, and a mean intra-abdominal pressure before DL of 33±7 mmHg. Mortality was 100% in patients with ACS versus 33% without ACS. CONCLUSION: An ACS that requires DL worsens the already critical condition of a TEN patient considerably. TEN-related impaired intestinal functionality and increasing intestinal edema due to systemic capillary leakage warrant early initiation of intra-abdominal pressure monitoring to identify patients at high risk of ACS.

Stability of locking and non-locking plates in an osteoporotic calcaneal fracture model.

BACKGROUND: The aim of this biomechanical cadaver study of calcaneal fractures was to investigate whether a locking calcaneal plate provides more stiffness in osteoporotic bone compared to a non-locking plate. MATERIALS AND METHODS: Sixteen fresh frozen bone mineral density (BMD)-matched cadaver feet were tested in a four-part model of a Sanders Type IIB calcaneal fracture. The fractures were fixed either with a non-locking AO (Sanders) plate or an interlocking AO plate (Synthes, Paoli, PA) to the lateral calcaneal wall with six screws. Specimens were subjected to cyclic loading which was increased stepwise to full body weight. Displacement of the posterior facet fragment was measured with an optical tracking system in the sagittal and transverse planes. RESULTS: No statistically significant differences were observed between the non-locking and the locking plates with respect to number of cycles to failure or 1-mm displacement of the posterior facet. The initial stiffness was significantly higher for non-locking plates. CONCLUSION: In osteoporotic bone, the greater stiffness of the screw-locking-plate construct was offset by the smaller diameter of the screw threads and the lower friction between the plate and bone when a locking plate was used. In clinical practice, the plate should first be compressed to osteoporotic bone with cancellous screws and at least two screws should be placed in the anterior process and in the tuberosity of the calcaneus.

Basilar artery occlusion after multifactor coagulopathy including Rhizopus oryzae infection in burns.

The authors report a case of a 29-year-old male patient with severe burn injuries (54% TBSA) and inhalation injury. He developed a candidemia and a cutaneous zygomycotic superinfection with Rhizopus oryzae while he received burn intensive care. Despite aggressive surgery, sepsis persisted, and therapy was limited by uncontrollable coagulopathy and catecholamine refractory shock after 15 days. Autopsy revealed a thromboembolic occlusion of the basilar artery that resulted in liquefactive necrosis of the basal brain tissue and the brain stem. Because cerebral vessel occlusions after burn injuries are reported rarely, the current literature was reviewed, and possible pathophysiological aspects are discussed.

Toxic epidermal necrolysis in pregnancy: case report and review of the literature.

The authors report the case of a 29-year-old pregnant woman (2g1p) in the 16th week of gestation presenting with extensive toxic epidermal necrolysis (TEN). The cutaneous symptoms began at hands, feet, and in the mouth and developed during the course of 10 days to cover 75% of her TBSA, whereas total epidermolysis was present on more than 40% of her TBSA. Because of progressive swelling and bleeding of the oral mucosa, tracheal intubation was necessary to secure the airway of the patient. Critical care management required sedation, tracheotomy and artificial ventilation (14 days), prolonged fluid resuscitation, daily wound care, topical antiseptic and systemic antibiotic medication, hemostatic therapy and blood transfusion, hypercaloric nutrition, and frequent obstetric ultrasound evaluations. Reepithelialization began simultaneously with progressive epidermolysis and was completed after 35 days of conservative treatment. Because the patient experienced a swollen vulva and a stenotic birth channel, typical sequelae of TEN, a primary cesarean section was required after 40 weeks of gestation. The male infant showed neither signs of skin detachment nor sequelae caused by the prolonged therapy for the mother. A multidisciplinary approach and appropriate medical infrastructure are required to solve the challenge of TEN in pregnancy. In addition, the particular role of gestation in the pathophysiology of TEN needs to be explored further.

Coating of titanium implants with collagen, RGD peptide and chondroitin sulfate.

Coating of orthopaedic implants with extracellular bone matrix components was performed to enhance bone healing. Titanium pins of 0.8mm diameter were coated with type I collagen (Ti/Coll), RGD peptide (Ti/RGD) or type I collagen and chondroitin sulfate (Ti/Coll/CS). Uncoated pins (Ti) served as control. The pins were inserted as intramedullary nails into the tibia of male adult Wistar rats. Six specimens of each group were retrieved at 4, 7, 14 and 28 days. All implants healed uneventfully without adverse reactions. ED 1-positive macrophages appeared in higher numbers around Ti/RGD at day 4 and around Ti at day 14 after implantation (p < 0.05). TRAP-positive osteoclasts and precursors were abundant around Ti/Coll/CS at day 7 (p < 0.05). A significant increase in osteopontin-positive osteoblasts was seen around Ti/Coll/CS implants at days 7 and 14, and around Ti/RGD at day 14 (p < 0.05). At day 28, 62% of Ti, 76% of Ti/Coll, 85%* of Ti/RGD and 89%* of Ti/CoIl/CS (*p < 0.05) implants were covered with newly formed lamellar bone. The addition of extracellular matrix components significantly enhances bone remodelling in the early stages of bone healing around Ti implants, eventually leading to increased new bone formation at the implant surface after 4 weeks.

Fulminant liver failure following infection by Clostridium perfringens.

BACKGROUND: Since the first description of gas gangrene of an internal organ by Fraenkel in 1889, few cases of acute organ failure following Clostridium perfringens infection have been described in the medical literature. Isolated Clostridium perfringens infection with subsequent sepsis syndrome is an extremely rare clinical syndrome. A consecutive pattern of multiple organ failure generally has a very high mortality rate. METHODS: Individual case report and literature review. RESULTS: A 58-year-old male patient developed fulminant necrotic liver failure following a Clostridium perfringens infection. Despite all intensive care measures, including computed tomography-guided drainage, the condition of the patient deteriorated rapidly and the patient died. In this case report, we characterize the symptoms of gas gangrene isolated to the liver and compare the treatment measures instituted with the medical literature. CONCLUSIONS: In our presented case, primary malignant disease of the papilla of Vater and resection by a Whipple procedure with a hepatico-jejunostomy were a decisive cause of the gas gangrene in the liver. The origin is probably ascension up the common hepatic duct of gut-derived bacteria.