New approaches to second-degree burn healing: Polyvinyl alcohol membrane loaded to arnica combined to laser therapy.

Second-degree burns require greater care, as the damage is more extensive and worrisome and the use of a biomaterial can help in the cell repair process, with better planning, low cost, and better accessibility. Arnica has anti-inflammatory and analgesic properties in skin lesions treatments and laser therapy is another therapeutic alternative for burns. Evaluate the effects of arnica incorporated into PVA associated or not with low intensity laser on burns in rats. PVA and PVA with arnica (PVA+A) were obtained and characterized physicochemically. Through in vivo studies, the effects of PVA and PVA+A with or without the application of laser on the lesions allowed histological and immunohistochemical analyzes. PVA+A was biocompatible and with sustained release of the active, being a promising pharmacological tool and confirmed that laser therapy was effective in accelerating the healing process, due to its potential biomodulator, improving inflammatory aspects, promoting rapid healing in skin lesions.

Reconstrução de lábio utilizando o retalho randomizado cervical do músculo platisma / Lip reconstruction with cervical platysma muscle randomized flaps

INTRODUÇÃO: A reconstrução cirúrgica da deformidade labial exige bom conhecimento anatômico e técnica cirúrgica. Fatores como localização da lesão, extensão, profundidade e tratamento inicial adequado constituem variáveis que são analisadas em conjunto para a estratégia cirúrgica mais apropriada. O retalho de Tsur é definido como randomizado do músculo platisma que pode ser elevado do pescoço como tubo unipediculado ou bipediculado, dependendo do tamanho e da localização da perda de substância. Pode incluir área pilosa cervical e ser utilizado em defeitos de plano parcial ou total do lábio. MÉTODO: Foram operados três pacientes com perda de substância labial extensa. Foi utilizado retalho bipediculado em dois casos e unipediculado em um caso. RESULTADOS: No primeiro paciente, foi liberado um dos pedículos do retalho cervical no 15º dia do pós-operatório. Após 30 dias, o outro foi liberado após integração completa ao lábio superior. A partir deste, retalhos ao acaso foram confeccionados para reconstrução do lábio inferior, columela e ponta nasal. O segundo paciente evoluiu com necrose da porção central do retalho, sendo realizada confecção de leito de ancoragem próximo à comissura. Apresentou melhora da continência salivar. O terceiro paciente evoluiu bem, sendo liberado o retalho lingual utilizado para reconstruir o lábio superior após 3 semanas. CONCLUSÃO: A reconstrução com o retalho de Tsur mostrou-se útil nos casos de reconstrução total do lábio superior e inferior, além de ser ótima alternativa na situação de impossibilidade de utilização do retalho microcirúrgico e de permitir um resultado estético aceitável com recuperação da função mastigatória e da fala adequadas, apesar da complexidade inicial dos casos.

INTRODUCTION: Surgical reconstruction of lip deformities requires proper anatomical knowledge and surgical techniques. Factors such as location, extent, depth, and appropriate initial treatment of the lesion are parameters that are simultaneously analyzed to identify the most suitable surgical strategy. The flap described by Tsur is defined as a platysma muscle randomized flap, and can be raised from the neck as a unipedicled or bipedicled tube, depending on the size and location of the loss of substance. This may include the hairy cervical area, and it can be used in defects of the partial or total plane of the lip. METHOD: Three patients with extensive loss of lip substance underwent surgery. A bipedicled flap was used in two cases, and a unipedicled flap in one case. RESULTS: In the first patient, one pedicle of the cervical flap was released on the 15th postoperative day. After 30 days, we released the other, after full integration into the upper lip. From this, flaps were randomly made for the reconstruction of the lower lip, columella, and nasal tip. The second patient developed necrosis of the central portion of the flap, and the recipient bed was anchored next to the commissure. The patient showed improved salivary continence. The third patient progressed well, and the tongue flap used to reconstruct the upper lip was released three weeks later. CONCLUSION: Reconstruction with a Tsur flap was useful in cases of total reconstruction of the upper and lower lip, in addition to being a great alternative in situations in which it was impossible to use microsurgical flaps. This technique also allowed the achievement of satisfactory aesthetic outcomes, and resulted in the recovery of masticatory function and appropriate speech, despite the initial complexity of the cases.