Needle EMG muscle identification: A systematic approach to needle EMG examination

Needle EMG guidance for injection of botulinum toxin. Needle EMG guidance is useful.

Botulinum toxin (BTX) is used increasingly in neurologic practice. Needle electromyographic (EMG) analysis of muscles in disorders treated with BTX is often useful in diagnosis, assessing treatment response, and searching for denervation when neutralizing antibodies are suspected. These are important uses of needle EMG. Although needle EMG guidance for injection of BTX is an accepted technique,...

The Principles of NCS and Needle EMG

No needle to fear: An approach to needle phobic patients

   18F-FDG is the most commonly used radioisotope in PET scanning and is administered intravenously. When patients cannot cannulated, there are limited options available for functional tumour assessment. A fifty year old male presented for investigation of a suspected lung carcinoma identified during investigation of pneumonia. The patient had a severe needle phobia, intellectual dis...

Different Types of Fibrillation Potentials in Human Needle EMG

Rhythmic fibrillation potentials are the hallmark of denervated muscle fibres in needle EMG of a striated muscle (Conrad et al. 1972, Heckmann & Ludin 1982). They are readily activated by the insertion of an EMG needle electrode (Kugelberg & Petersén 1949). Irregular fibrillation potentials may also be present (Buchthal & Rosenfalck 1966, Purves & Sakmann 1974). There is, however, an obvious di...

Principles of Nerve Conduction Studies and Needle EMG