FONOFORESE E ELETROESTIMULAÇÃO NEUROMUSCULAR EM CÃES: UMA CONTRIBUIÇÃO PARA A FISIOTERAPIA VETERINARIA / PHONOPHORESIS AND NEUROMUSCULAR ELECTRICAL STIMULATION IN DOGS: A CONTRIBUTION TO THE VETERINARY PHISIOTHERAPY

AUTOR(ES)
DATA DE PUBLICAÇÃO

2011

RESUMO

The aim of the first study was to evaluate the plasma concentration of diclofenac sodium (DS) in dogs submitted to diclofenac phonophoresis and to evaluate if phonophoresis induces greater absorption of this drug. .Five dogs were used in eight different groups at different times: Group 1, application of ultrasound for six minutes, removal of the ultrasound gel and topical application of two grams of DS gel for six minutes; Group 2, topical application of two grams of DS gel for six minutes; Group 3 topical application of two grams of DS gel and then covering it with common gel to apply ultrasound for six minutes; Group 4, similar to Group 1, but the ultrasound device was switched off; Group 5, similar to Group 3, but the ultrasound device was switched off, Group 6, the application of ultrasound was performed using only two grams of DS; Group 7, similar to Group 6, but the ultrasound device was switched off and Group 8, oral administration of 40mg of DS. The application area was 20cm. It was used a frequency of 1MHz, continuous ultrasound and intensity of 0,4W cm-2. Blood collections were performed before treatment (T0), 1h (T1) and 4h (T2) after ultrasound application for all groups. DS concentrations in plasma were measured by high performance liquid choramatohraphy (HPLC). There was significant increase of DS plasma concentration only at T1 in the Group 8. It was no possible to detect any concentration of DS in the plasma of dogs after topical application of DS, even after DS phonophoresis. The facilitation of transdermal penetration by ultrasound has not been verified under the protocol specified in this research. The aim of the second study was to use medium frequency Neuromuscular Electrical Stimulation (NMES) in femoral quadriceps of dogs with induced muscular atrophy, evaluate the occurrence of gain in mass in these muscles and to compare NMES in different periods of treatment. Eight dogs, weighing between 15 and 25kg, were randomly placed in two groups: GI (NMES for 30min), GII, (NMES for 60min). For the induction of the muscular atrophy, the right femoral-tibial-patellar joint was immobilized for 30 days by the percutaneous transfixation type II method. NMES was carried out in the dogs of groups, three times a week, with an interval of 48h between each session, during 60 days. The parameters measured were: thigh perimetry, knee goniometry, creatine kinase (CK) enzyme activity and morphometry of the muscular fibers in transversal cuts of the vastus lateralis muscle, collected through a muscular biopsy. There was no significant difference regarding the values of thigh perimetry and CK enzyme activity. The goniometry presented a significant increase (P<0.05) in the groups GI and GII at 30 days from the surgical procedure for immobilization when compared with time zero. As for the morphometry of the fibers of the vastus lateralis, a significant increase (P<0.05) was observed in the transversal area of the treated groups GI e GII at 90 days from the surgical procedure for immobilization when compared with time zero. Thus, it can be concluded that NMES of medium frequency brings about hypertrophy of the vastus lateralis muscle in dogs after induced muscular atrophy. NMES for 60min (GII) presents a greater muscular gain related to the GI

ASSUNTO(S)

eletroterapia cão diclofenaco sódico clae fonoforese medicina veterinaria dog electrotherapy diclofenac sodium phonophoresis hplc

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