Schwannoma of the brachial plexus: an unusual cause for a cervical mass.
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Biomedical subjects
Publications and source records attributed to M F Guerra.
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PURPOSE: The best method for reconstructing the fractured orbital floor remains controversial. This article evaluates the usefulness of dehydrated human dura mater for orbital floor reconstruction after facial trauma. PATIENTS AND METHODS: A retrospective analysis of 55 patients who had undergone surgical repair of orbital fractures was performed. The dura mater was used when the disruption was less than 2 cm in diameter. Fractures were divided into 3 types: type I (blow-out), type II (orbitozygomatic fracture), and type III (midfacial fracture). The patients were followed-up at least 1 year after surgery, and the cosmetic and functional results were reviewed. RESULTS: A 7% complication rate was noted. No implant migration or infection resulted. One year postsurgery, all patients showed a complete resolution of their diplopia. CONCLUSION: The safety and biocompatibility of dehydrated human dura mater support its use in orbital defects less than 2 cm in diameter.
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Primary Pulmonary Hypertension (PPH) is a rare disease of unknown aetiology that is diagnosed only when the underlying causing factors are undetermined. Usually is discovered in its late stage, when pulmonary vascular resistances are severely compromised and the pathologic changes already well developed, resulting in right heart failure and death within several years of the onset of symptoms. The data published in the last years have provided new insights into the disease knowledge. In this article currents concepts about aetiology, pathogenesis and open lung biopsy value are reviewed; clinical manifestations and diagnostic methods are described; the usefulness of medical treatment to improve quality of life in these patients, mainly anticoagulation and vasodilator therapy with high-dose nifedipine, and how lung transplantation has increasingly become an option for selected patients with PPH, is also analysed.
At a dosage level of 8 to 10 mg/kg body-weight daily for 120 days nifurtimox was associated with clinical healing of cutaneous leishmaniasis in five of eight patients. At a dosage level of 20 mg/kg body-weight daily for 10 days in six of 10 patients the skin ulcer healed. Results and the reasons why both schemes are impracticable are briefly discussed.
The use of a constant infusion of intravenous morphine sulfate in a patient with severe sickle cell crisis is described. After several days of poor control with intramuscular and intravenous narcotic injections, adequate analgesia was obtained with the infusion of morphine within two hours of initiation of therapy. No adverse effects were noted. With the advantages provided by an intravenous narcotic infusion, this protocol should be considered as a suitable alternative to conventional methods for providing pain control in patients in sickle cell crisis.