Read this excerpt from a patient's health record:Hospital CourseNeuro: On admission exam, Decker was found to have mild lumbar lordosis, pseudohypertrophy of his calf muscles, and a waddling gait. He did not have any genu varum or genu valgus. No hyporeflexia was noted. The initial concern was a muscular dystrophy. Given a family history of polymyositis, that was considered as well. Decker's labs were consistent with muscular dystrophy. An electromyography showed myopathic changes. A muscle biopsy was then performed to help distinguish which of the muscular dystrophies the patient has. The results are pending.CV: Cardiology was consulted, given the strong risk for developing cardiomyopathy.Resp: No problems were seen throughout the hospital stay. Decker was educated in performing
breathing exercises and also about the respiratory problems often seen later on in the condition.Ortho: Orthopedic surgery was consulted for Decker's scoliosis.Social: Much of the hospital stay focused on patient education. Which of the following tests showed "myopathic changes"?
A. Procedure for looking into a muscle
B. Procedure for measuring the electrical activity of a muscle
C. Procedure for studying muscles
D. Imaging procedure using a computer to produce cross sections along an axis
E. A record of the electrical activity of a muscle
Answer: B
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