By Michael J. Aminoff
Appropriately pick out, enforce, and interpret electrodiagnostic checks to spot a whole diversity of primary and peripheral apprehensive process problems with Aminoff’s Electrodiagnosis in medical Neurology! masking every little thing from simple ideas to the newest advances in electrodiagnosis, this scientific reference e-book is helping you're making optimum use of this robust yet complicated diagnostic modality in compliance with regulatory criteria, so that you can diagnose sufferers competently and start up potent remedy and administration strategies.
- Deepen your figuring out of the rules, scope, obstacles, diagnostic value, prognostic relevance, and issues for every technique.
- Visually clutch the technical and functional facets of electrodiagnostic assessments with virtually 800 charts, figures, and tables.
- Rely at the wisdom, event, and point of view of popular professional Dr. Michael J. Aminoff and a world group of individuals produced from a digital "who’s who" of scientific neurophysiology.
- Keep up with advancements within the box via major updates, including new chapters on Artifacts and common versions within the Electroencephalogram; Microneurography; scientific purposes of Nerve Excitability trying out; Ultrasound of Muscle and Nerve; The Blink Reflex and different Brainstem Reflexes; visible Evoked Potentials,Electroretinography and different Diagnostic techniques to the visible process; and Magnetic Stimulation in medical perform and learn.
- Access details at the move out of your computing device or cellular equipment through expertconsult.com, that includes absolutely searchable textual content, and hyperlinks to PubMed.
- Meet regulatory criteria and practice most sensible practices with state of the art counsel (for either non-specialists and experts) emphasizing the scientific purposes of every electrodiagnostic technique.
- Get simply actionable details and keep away from error with electrophysiologic findings built-in into the scientific context during which they're obtained.
You can't perform medical neurophysiology with no Aminoff.
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Additional info for Aminoff's Electrodiagnosis in Clinical Neurology
Villarreal RA: System and Devices for Reducing Signal Interference in Patient Monitoring Systems. US Patent No. 6,870,109 CHAPTER Electroencephalography: General Principles and Clinical Applications 3 MICHAEL J. AMINOFF PRACTICAL CONSIDERATIONS Recording Arrangements Activation Procedures Artifacts Bioelectric Artifacts Instrumental Artifacts EEG Interpretation ACTIVITY RECORDED IN THE EEG Alpha Activity Alpha Rhythm Other Rhythms of Alpha Frequency Beta Activity Theta Activity Delta Activity Polymorphic Delta Activity Intermittent Rhythmic Delta Activity Breach Rhythm Lambda Waves Triphasic Waves Spike Discharges Paroxysmal Activity Spike-Wave Activity Intermittent Rhythmic Delta Activity Burst-Suppression Pattern Periodic Complexes Periodic Lateralized Epileptiform Discharges Low-Voltage Records Other EEG Patterns 14- and 6-Hz Positive Spikes Small Sharp Spikes or Benign Epileptiform Transients of Sleep 6-Hz Spike-Wave Activity Wicket Spikes Rhythmic Temporal Theta Bursts of Drowsiness (Psychomotor Variant) Rhythmic Theta Discharges EEG Changes with Aging EEG RESPONSES TO SIMPLE ACTIVATING PROCEDURES Hyperventilation Photic Stimulation Natural Sleep Sleep Deprivation EEG FINDINGS IN PATIENTS WITH NEUROLOGIC DISORDERS Epilepsy Primary (Idiopathic) Generalized Epilepsy Secondary (Symptomatic) Generalized Epilepsy Epilepsies Producing Focal (Partial) Seizures Anticonvulsant Drugs, Seizure Control, and the EEG Status Epilepticus Long-Term EEG Monitoring for Epilepsy Value of the EEG in the Management of Patients with Epilepsy Syncope Infections Herpes Simplex Encephalitis Subacute Sclerosing Panencephalitis Creutzfeldt–Jakob Disease Abscess Vascular Lesions Subarachnoid Hemorrhage Subdural Hematoma Intracranial Aneurysms and Arteriovenous Malformations Sturge–Weber Syndrome Headache Tumors Tuberous Sclerosis Pseudotumor Cerebri Dementia Metabolic Disorders Hepatic Encephalopathy Renal Insufficiency Anoxic Encephalopathy Effects of Drugs and Alcohol on the EEG Multiple Sclerosis Trauma Coma Persistent Vegetative State De-efferented State (Locked-In Syndrome) Miscellaneous Disorders Spinocerebellar Degeneration Parkinson Disease Paroxysmal Choreoathetosis Huntington Disease Sydenham Chorea Hepatolenticular Degeneration Progressive Supranuclear Palsy Transient Global Amnesia Psychiatric Disorders 37 38 AMINOFF’S ELECTRODIAGNOSIS IN CLINICAL NEUROLOGY The electroencephalogram (EEG) represents the electrical activity of the brain as recorded from electrodes placed on the scalp.
The anterior or mesial temporal spike discharges found interictally in patients with focal (partial) seizures with impaired consciousness (complex partial seizures). Similarly, 3-Hz, 6-Hz, and 1- to 2-Hz spike-wave discharges differ in their clinical and prognostic relevance. Moreover, the significance of frankly epileptiform discharges depends on the clinical circumstances in which they are found. Epileptiform spike discharges arising focally in the temporal region are associated most commonly with focal (partial) seizures accompanied by an impairment of consciousness and are activated during drowsiness or sleep.
Sweat artifact is common and is characterized by highamplitude potentials of very low frequency. Low-frequency filters can attenuate these slow waves. INSTRUMENTAL ARTIFACTS Background 60-Hz noise in a restricted number of channels is often related to mismatched electrical impedance of electrode pairs or to the poor application of electrodes so that slight movement alters transiently the impedance of an individual electrode. A 60-Hz interference signal normally is common to the pair of electrodes connected to an amplifier; the differential amplifier essentially discards this common signal.