Apnea of the Newborn
Risk • Full-term infants with an underlying pathology (i.e., neurologic disorders, metabolic derangements) • Premature infants, with or without an underlying pathology • Infants less than 60 wk post conceptual…
Appendicitis, Acute
Risk • One of most common abdominal emergencies • Possible at any age but most common during an individual’s teens and 20s • 11 in 10,000 individuals will experience appendicitis…
Aortic Stenosis
Risk • Most common valvular heart disease; prevalence only 0.2% among adults aged 50-59 y, but increases to almost 10% after age 80 y. • Calcific aortic stenosis: Major risk…
Anxiety Disorders
Risk • Lifetime prevalence approximately 30% in USA • Gender: Female (2× more likely compared with male) • Environmental: Traumatic or stressful events • Age: Often develop in childhood and…
Aortic Regurgitation
Risk • There are on the order of 100,000 aortic valve surgeries each year, with approximately 18,000 of them performed annually in the USA. • Of aortic valves, 20% to…
Antithrombin III Deficiency
Risk • Incidence in USA: 1:2000-5000 (may be higher) • Men and women equally affected and no racial or ethnic difference Perioperative Risks • Risk of postop thromboembolic phenomena; 40%…
Anomalous Pulmonary Venous Drainage
Risk • One percent of all congenital heart defects. • TAPVD, the severe form, or PAPVD, the less severe form, exists when pulm veins drain into the venous circulation. •…
Anticoagulation, Preoperative
Risk • Pts with mechanical heart valves, atrial fibrillation, pulm embolism, or recent venous thrombosis. • Oral anticoagulant therapy (warfarin, oral Xa inhibitor-rivaroxaban, apixaban, and edoxaban) and direct thrombin inhibitor…
Anorexia Nervosa
Risk • Primarily in white adolescent females from middle- or upper-class families; 4% to 10% males. • More common in models, ballet students, and professions demanding high achievement. • Occurs…
Anhidrosis (Congenital Anhidrotic Ectodermal Dysplasia)
Risk • Rare: 1:125,000,000 • Clusters in Japan and Israel Perioperative Risks • Impaired thermoregulation (risk of fatal hyperpyrexia in infants) • Postop chest infections Perioperative Risks • Impaired thermoregulation…
