Behavioral Neurology and Dementia
Behavioral Neurology and Dementia QUESTIONS 1. What percentage of people in the United States older than 80 have Alzheimer’s dementia (AD)? A. 5% B. 25% C. 40% D. 75% E….
NEUROLOGY
Stupor and Coma
Stupor and Coma QUESTIONS 1. A 76-year-old male presents with the inability to maintain attention. He is easily distracted, fidgety, and occasionally mistakes the wires in the room for snakes….
Sleep Medicine
Sleep Medicine QUESTIONS 1. What percentage of Americans suffer from insomnia (both acute and chronic)? A. 10% B. 40% C. 90% D. <1% E. None of the above View Answer…
Anatomy and Physiology
Anatomy and Physiology QUESTIONS 1. The diencephalon consists of all of the following structures except: A. thalamus B. subthalamus C. pons D. putamen E. all of the above View Answer…
Myoglobinuric Syndromes Including Malignant Hyperthermia
Myoglobinuria—the presence in urine of a 17.8-kDa, red pigment, iron-protein compound called myoglobin—results from rhabdomyolysis, which is the acute breakdown or necrosis of skeletal muscle fibers whose contents (among them…
Metabolic and Mitochondrial Myopathies
McArdle disease, an autosomal recessive myophosphorylase deficiency leading to glycolytic defects, is the common glycogen storage disease (GSD). Other glycolytic defects—phosphofructokinase, phosphoglycerate mutase, and lactic dehydrogenase deficiencies—produce similar clinical pictures….
Endocrine, Toxic, and Critical Illness Myopathies
Hypothyroid Myopathy. Most patients with myxedema (chronic hypothyroidism) complain of weakness; 25% have objective proximal muscle weakness. Myoedema, an electrically silent mounding of percussed muscle, occurs in one third of…
Myopathies: Hypokalemia/Hyperkalemia and the Periodic Paralyses Channelopathies Myopathies Associated with Disorders of Potassium Metabolism
Hypokalemia-associated weakness does not usually become problematic until potassium levels fall toward and then below 1.5 mEq/L, with mild weakness, fatigue, and muscle cramping giving way to severe and generalized…
Inclusion Body Myositis
Serum creatine kinase (CK) is mildly to, at most, moderately elevated (<10 times normal). Electromyography (EMG) discloses fibrillation potentials and a mixed population of motor unit potentials (MUPs): low-amplitude myopathic…
