Obgyn Key

Technique Recording surface Recording area (mm2) Number fibers in one motor unit studied (fibers) Utility Single fiber EMG Small; 25 μm at side-port 0.0005 1–2 Analysis of neuromuscular transmission Concentric…

Fig. 17.1 Anatomy of the spinal cord, nerve root and vertebral body. Cross sectional (axial) view of the spine showing a sketch (left) and MRI T2-weighted image (right) revealing: (1)…

Fig. 4.1 Median digit III orthodromic study recording over the median nerve at the wrist and stimulating digit III Fig. 4.2 (a, b). Median palmar sensory study (orthodromic) recording over…

Age (years) Number of subjects Orbicularis oculi Orbicularis oris 0–1 120 3.1 ± 0.8 5.3 ± 1.7 1–3 91 3.3 ± 0.5 5.4 ± 1.6 3–9 89 3.5 ± 1.0…

Fig. 22.1 CK serum levels on most muscle disorders in paediatric population. (serum CK expressed in IU/L) Electrophysiologic Evaluation EDX evaluation for muscle disorders in the pediatric population can be…

1. Anatomical site(s) that are clinically involved:  − Brain  − Cranial nerve(s)  − Spine  − Nerve plexus  − Sensory ganglia  − Nerve root(s)  − Motor neuron  − Peripheral nerve(s) 2. Non-neurological findings  − Non-neurological organ involvement  − Concomitant diseases (auto-immune disease, cardiac…

Fibre type Diameter (μm) Conduction Velocity (m/s) Myelination Function Afferent fibers IA 12–20 70–120 Large myelinated From muscle spindles IB 12–20 70–120 Large myelinated From Golgi tendon organs II 6–12…

Fig. 9.1 Positive sharp waves (a) and fibrillation potentials (b). Note the initial positive (downward) deflection of both types of potentials. Courtesy Hugh J. McMillan, MD The analysis of motor…

Fig. 19.1 Finger immersion test of vasomotor sympathetic function. Hand is immersed for 30 min in a heated water bath. Digital pictures are taken (from left to right) at baseline…

Nerve conduction studies  Normal Right Left  Normal Right Left Sensory Motor Median    Median (at wrist to APB)    PL (ms) <3.2 2.6 2.1  DML (ms) <4.2 3.7 3.9  SNAP (mV) >14.0…