J Trauma
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Nicotine at a low concentration was suggested as a new topical drug for clinical application. It has been reported to be capable of enhancing skin wound healing. This study was designed to assess the effect of nicotine administration at a low dose on bone regeneration using a rabbit model of mandibular distraction osteogenesis. ⋯ These findings imply a potential risk of compromised bone healing in patients taking nicotine medication. Further clinical studies are necessary to assess the risk of nicotine medication on reconstructive surgery.
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Hypertonic saline solutions in combination with colloids may have some applications in critically ill patients. Our aim was to examine the effects of small volumes (0.7-1 mL/kg intravenous) of 7.5% NaCl with different colloids on cardiac stability, hemodynamics, and mortality after severe hemorrhagic shock. ⋯ Small volumes of 7.5% NaCl led to fewer arrhythmias and a 2.6 times survival benefit over untreated rats, and a partial resuscitation of MAP into the "permissive range." Dextran-70 or HES in 7.5% NaCl were proarrhythmic and HES led to increased mortality (p < 0.05). Because optimal heart function is critical for successful resuscitation, care should be exercised when using dextran-70 or 6 and 10% HES in small volume hypertonic saline solutions for early hypotensive resuscitation.
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The objective of this study was to investigate associations between closed suction intra-abdominal drain placement in isolated hollow viscus injury (HVI) and intra-abdominal deep surgical site infections (DSSI). ⋯ Intra-abdominal drain placement after isolated HVI repair is associated with almost fourfold adjusted increased incidence of DSSI. Prospective validation of drain utilization in these instances is warranted.
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Prolonged compression of limb muscles and subsequent decompression are important in the development of crush syndrome (CS). We applied a simple rubber tourniquet to rat hind limbs to create a CS model. ⋯ The findings from this study demonstrate the feasibility of a novel small animal model of extremity crush injury. By using this model, the impact of incremental periods of reperfusion on mortality and remote organ dysfunctions can be characterized. Future studies are necessary to better define a threshold for this injury pattern and the impact of other factors underlying this syndrome.
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Posterolateral spinal fusion is used to treat patients with degenerative spinal disorders. In this study, we investigated the effectiveness of a mesenchymal stem cell (MSC)/hydroxyapatite/type I collagen hybrid graft for posterolateral spinal fusion in a rabbit model. ⋯ The hybrid graft could be effectively used to achieve posterolateral spinal fusion.