Obgyn Key

Electrocardiography   George F. Van Hare   Normal electrical activation of the heart begins pacemaker activity in the sinoatrial node, and the wave of activation spreads through the right and…

Epilepsy Treatment: Antiepileptic Drug Therapy   Blaise F. D. Bourgeois   Although other treatment modalities, such as the ketogenic diet, epilepsy surgery, and the vagus nerve stimulator, are appropriate options…

Disorders of Branched Chain Amino and Organic Acid Metabolism   Stephen I. Goodman and Jean-Marie Saudubray   CATABOLISM OF BRANCHED-CHAIN AMINOACIDS The three essential branched chain aminoacids (BCAAs), leucine, isoleucine,…

Other Disorders of the Thyroid   Delbert A. Fisher   NONTHYROIDAL ILLNESS (THE LOW T3 SYNDROME) Nonthyroidal illness (NTI) was initially characterized as a selective deficiency of serum and tissue…

Rubella   Maria Jevitz Patterson   Rubella (German measles) is no longer endemic in the United States. Because of its worldwide distribution, imported cases continue to occur, although these sporadic…

Inflammatory Bowel Disease   Michael C. Stephens, Subra Kugathasan, and Thomas T. Sato   Crohn disease (CD) and ulcerative colitis (UC), collectively known as inflammatory bowel disease (IBD), are idiopathic,…

Life Support Systems   Julio Pérez Fontán   The past three decades have seen immense advances in the technologies used to replace the functions of failing organs or systems. During…

Acne and Other Disorders of the Pilosebaceous Unit   Sara W. Dill and Bari B. Cunningham   ACNE VULGARIS Acne vulgaris is one of the most common cutaneous disorders and…

Immunizations   Kristina A. Bryant   Childhood immunizations represent one of the great public health achievements of the 20th and 21st centuries.1 Less than 250 years after Edward Jenner discovered…

Myopathies   Basil T. Darras   MUSCULAR DYSTROPHIES Muscular dystrophies are an inherited group of primary diseases of muscle, characterized pathologically by muscle fiber degeneration and clinically by progressive muscle…